Shading indicates stations or instruments that are currently considered to be “inactive”. This designation is assigned:
- when there has been a permanent cessation of measurements or
- when the measurement PI is no longer considered to be active in the NDACC due to the cessation of data archiving at the NDACC Data Host Facility and of communications with the NDACC Steering Committee.
Northern Hemisphere High-Latitude Stations (60˚N - 90˚N)
| Sonde(Aerosol) | D. Tarasick (EC) and J. Rosen (U. Wyoming) – Backscatter measurements of aerosol profiles available for the winter from 1989 to 1993. |
| Sonde(Ozone) | D. Tarasick (EC) — ECC sondes launched weekly since 1987. NDACC archiving began in 1996 under former PI, Fast. |
| Lidar(Aerosol) | K. Strong (U. Toronto) — Stratospheric Ozone Lidar system (SOLID) deployed in February 1993 under PI A. Carswell. Nighttime operations only. SOLID has five detection channels, including one Rayleigh channel (353 nm), and one Raman channel (385 nm, installed in 1994) used for aerosol retrieval. Operation suspended for 2002 and 2003. Operations resumed in 2004–2009 on a campaign basis schedule (~2 weeks in February–March) under PI K. Strawbridge. Operation suspended for 2010–2016 due to technical and funding issues. Operations resumed under PI J. Drummond since 2017 on the ~4–6 week period leading up to polar sunrise in January–March and ~2 week period in October–November. Since 2020 the PI of SOLID and PEARL is Kimberly Strong (University of Toronto). Early data exist in the database for 1994–1998 in NASA Ames format. |
| Lidar(Aerosol) | T. Nagai (MRI) and O. Uchino (MRI) – Nd:YAG Lidar (1064 and 532 nm; dual polarization) deployed in February 1993. Operations were winter only. Operations were expanded to allow for tropospheric retrievals. Operations suspended after spring 2002. Data exist in the database for the two winters spanning 1993–1995. |
| Lidar(Ozone) | K. Strong (U. Toronto) — Stratospheric Ozone Lidar system (SOLID) deployed in February 1993 under PI A. Carswell. Nighttime operations only. SOLID has five detection channels: two Rayleigh channels for stratospheric ozone and temperature (308 and 353 nm), two Raman channels to improve the ozone and temperature profiles in the presence of aerosols (332 and 385 nm, installed in 1994), and one Raman channel for water vapour (405 nm, installed in 1998). Operation suspended for 2002 and 2003. Operations resumed in 2004–2009 on a campaign basis schedule (~2 weeks in February-March) under PI K. Strawbridge. Operation suspended for 2010-2016 due to technical and funding issues. Operations resumed under PI J. Drummond since 2017 on the ~4–6 week period leading up to polar sunrise in January—March and ~2 week period in October-November. Since 2020 the PI of SOLID and PEARL is Kimberly Strong (University of Toronto). Early data exist in the database for 1993–1998 and 2004–2009 in NASA Ames format. Since 2017 the data are submitted in HDF format. |
| Lidar(Temperature) | K. Strong (U. Toronto) — Stratospheric Ozone Lidar system (SOLID) deployed in February 1993 under PI A. Carswell. Nighttime operations only. SOLID has five detection channels, including two channels used for temperature retrieval: one Rayleigh channel for temperature above 25 km (353 nm), and one Raman channel to improve the temperature profiles in the presence of aerosols (385 nm, installed in 1994). Operation suspended for 2002 and 2003. Operations resumed in 2004–2009 on a campaign basis schedule (~2 weeks in February–March) under PI K. Strawbridge. Operation suspended for 2010-2016 due to technical and funding issues. Operations resumed under PI J. Drummond since 2017 on the ~4–6 week period leading up to polar sunrise in January-March and ~2 week period in October-November. Since 2020 the PI of SOLID and PEARL is Kimberly Strong (University of Toronto). Early data exist in the database for 1993–1998 and 2004–2009 in NASA Ames format. |
| FTIR Spectrometer(Column - multiple species) | H. Fast (EC) and K. Shibata and Y. Makino (MRI) — Bomem DA8 system (0.004 cm-1 resolution) deployed in February 1993 and removed in February 2009. Intercompared with NPL mobile instrument in spring 1999. Data archived for the winters of 1996–2000 and 2003–2006. |
| FTIR Spectrometer(Profile - multiple species) | K. Strong (U. Toronto) — Bruker 125HR (operated at 257 cm OPD, 0.004 cm-1 resolution in the mid-infrared), installed in July 2006. Direct-sun solar absorption spectra are collected in a semi-automated operation on clear-sky days from polar sunrise (approx. February 20) until polar sunset (approx. October 20). Three intercomparison campaigns with the Bomem DA8 FTIR (see above entry) were conducted prior to the removal of the DA8: February to April 2007, July 2007, and February to April 2008. Alternating mid-infrared NDACC and near-infrared TCCON measurements on a semi-daily basis since 2010. Operations in 2012 and 2013 were reduced due to funding. Operations since April 2020 have been affected by COVID-19 travel restrictions and lack of on-site support, with measurements limited to brief campaigns in August 2022, March-April 2023, and June-July 2023. |
| UV/Visible Spectrometer(Multiple Species) | K. Strong (U. Toronto) — Two DOAS systems (Jobin-Yvon Triax-180 triple-grating spectrometers with CCD detector). |
| Sonde(Ozone) | D. Tarasick (EC) — ECC sondes launched once per week year-round beginning in November 1992, with two additional soundings per week in winter. NDACC data archiving began in 1996 under PI, Fast. Launches are currently taking place at the nearby Eureka weather station (79.99°N, 85.90°W, 10 masl). |
| Lidar(Aerosol) | C. Ritter (AWI) – Multi-wavelength system (excimer and Nd:YAG) making winter measurements between 10 and 45 km since 1991. In 1999 the system was upgraded for tropospheric measurements of aerosol and water vapor. Since 2001 it is a "3+2+1" Raman lidar. |
| Lidar(Ozone) | P. Von der Gathen (AWI) – Multi-wavelength system (excimer and Nd:YAG) making winter measurements between 13 and 45 km from 1991–2011. Operations suspended due to laser failure and insufficient funds for replacement. |
| Lidar(Temperature) | C. Ritter, R. Neuber, and M. Maturilli (AWI) – Multi-wavelength system (excimer and Nd:YAG) making winter aerosol and temperature measurements between 10 and 45 km since 1991. A four-channel receiver was added in 1999 for tropospheric aerosol and water vapor measurements. |
| Microwave Radiometer(ClO) | J. Notholt (U. Bremen) and O. Schrems (AWI) – Campaign operations in winter of 1993/94; permanent operation in winter/spring since 1995. Participated in a ClO radiometer intercomparison at Ny Ålesund in spring 1997. Intermittent data archived from 1995 to 2003 under previous PI (K. Kunzi). |
| Microwave Radiometer(Ozone) | J. Notholt and M. Palm (U. Bremen) — Campaign operations in 1994 and 1995; permanent operations since then with the exception of 2004–2006. |
| FTIR Spectrometer(Column - multiple species) | J. Notholt and M. Palm (U. Bremen) — Bruker 120M (0.004 cm-1 resolution), deployed 1992 to 1995. Replaced by Bruker 120HR (0.0028 cm 1 resolution) in 1995. Operates all year with lunar (polar night) observations added since December 1992. Upgraded to 125 HR in 2012. |
| FTIR Spectrometer(Profile - multiple species) | J. Notholt and M. Palm (U. Bremen) — Bruker 120M (0.004 cm-1 resolution), deployed 1992 to 1995. Replaced by Bruker 120HR (0.0028 cm 1 resolution) in 1995. Operates all year with lunar (polar night) observations added since December 1992. Upgraded to 125 HR in 2012. |
| UV/Visible Spectrometer(Multiple Species) | J. P. Burrows and A. Richter (U. Bremen) – Measurements of ozone, NO2, BrO, IO, and OClO from February to May and August to November. Participated in intercomparison at OHP in June 1996. Database extends back to 1995. |
| UV/Visible Spectrometer(Multiple Species) | T. Svendby (NILU) and A. Pazmino and F. Goutail (LATMOS-IPSL) – SAOZ NO2 and ozone system operating since September 1990. Reanalysis of data from 2013 through 2017 is completed, and data are submitted ot the NDACC data base. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) – Backscatter measurements of aerosol profiles available from 1996 to 2005. |
| Sonde(Ozone) | P. von der Gathen and M. Rex (AWI) – Year-round soundings since 1992. |
| Sonde(Water Vapor) | M. Maturilli (AWI) – Cryogenic frost point sondes flown with a frequency ranging from every other month to twice per month. |
| Lidar(Aerosol) | A. di Sarra, T. Di Iorio, and M. Cacciani (U. Rome, ENEA) – Winter-only measurements from September 1991 to 1996. Values currently too small to retrieve. Data are archived under previous PI (G. Fiocco). |
| Lidar(Temperature) | A. di Sarra, T. Di Iorio, and M. Cacciani (U. Rome, ENEA) – Profiles from 25–75 km. Winter measurements from November 1993 to 1997. Year-round operation with daylight observations began in 2006. Did not operate in early 1998 to 2001, 2004 to 2005, and 2008. Data from 1993 to 1997 are archived under previous PI (G. Fiocco). |
| FTIR Spectrometer(Column - multiple species) | J. Hannigan and I. Ortega and M. Coffey (ret) (NCAR) – Bruker 120M (250cm OPD) installed at South Mountain in 1999 in bldg. 1985, operating under autonomous control. Instrument was moved to bldg. 1971 (1km from previous location at same altitude) in Summer 2011. In May 2015 a new Bruker 125HR FTIR (also 250cm OPD) operating with new software control and new solar tracker was installed. |
| FTIR Spectrometer(Profile - multiple species) | J. Hannigan and I. Ortega and M. Coffey (ret) (NCAR) – Bruker 120M (250cm OPD) installed at South Mountain in 1999 in bldg. 1985, operating under autonomous control. Instrument was moved to bldg. 1971 (1km from previous location at same altitude) in Summer 2011. In May 2015 a new Bruker 125HR FTIR (also 250cm OPD) operating with new software control and new solar tracker was installed. |
| UV/Visible Spectrometer(Multiple Species) | N. Jepsen (DMI) – SAOZ system for NO2 and ozone column measurements operating since September 1990. Data through 2016 archived under original PI (P. Eriksen). Measurements ceased in late 2017 when instrument was moved to Søndre Strømfjord. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) and N. Larsen (DMI) – Backscatter measurements of aerosol profiles available for January 1992–December 1998. |
| Sonde(Ozone) | N. Jepsen (DMI) – Soundings made during campaigns. Database extends back to October 1991. Also measures humidity and wind profiles. Data through 2016 archived under original PI (P. Eriksen). Measurements ceased in late 2017. |
| UV Spectroradiometer(UV) | G. Bernhard (Biospherical Instruments), and J. E. Frederick (U. Chicago) – Measurement of spectral irradiance between 280 and 600 nm with an SUV-150B spectroradiometer. The instrument is calibrated with standard lamps every two weeks. Observations started in August 2004. The system has been part of the National Science Foundation’s Arctic Observing Network and was decommissioned in August 2017 due to the lack of funds. The system is undergoing refurbishment at the factory for possible relocation at a yet-to-be-determined location. |
| Sonde(Ozone) | B. Johnson (NOAA/ESRL) – Weekly soundings since February 2005. Daily launches in April and July 2008. Ozonesonde launches ceased in July 2017 due to NOAA funding constraints. Other sources of support are being investigated. |
| Dobson(Ozone) | G. McConville (NOAA/ESRL) – Daily Dobson #091 observations beginning 1973. |
| UV Spectroradiometer(UV) | G. Bernhard (Biospherical Instruments) and J. E. Frederick (U. Chicago) – Measurement of spectral irradiance between 280 and 600 nm with an SUV-100 spectroradiometer. The instrument is calibrated with standard lamps every two week. Observations started in December 1990. The system was part of the National Science Foundation’s Arctic Observing Network and was decommissioned in July 2016 due to the lack of funds. It is currently stored at the NOAA facility in Barrow while new funding is sought. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and N. Jepsen (DMI) – SAOZ system for NO2 and O3 operated since November 1991, upgraded with a new detector in 1996. |
| Sonde(Aerosol) | N. Larsen (DMI) and J. Rosen (U. Wyoming) – Backscatter measurements of aerosol profiles available for January 1994 – February 1996. |
| Sonde(Ozone) | N. Jepsen (DMI) – ECC sondes launched weekly since 1989. Data through 2016 archived under original PI (P. Eriksen). |
| Lidar(Ozone) | S. Blindheim (ARR) and K. Stebel (NILU) – DIAL system providing ozone profiles from 15-50 km at ALOMAR Observatory from December 1994 to April 2011 and archived under previous PI Hansen. Limited measurements reinitiated in 2014. |
| Lidar(Temperature) | A. Hauchecorne (LATMOS-IPSL) – Rayleigh/Mie/Raman system providing temperature profiles from 30-90 km since 1995 at ALOMAR Observatory. Data archived for 1995 and 1996. |
| FTIR Spectrometer(Column - multiple species) | T. Blumenstock (IMK-ASF), U. Raffalski (IRF), and Y. Matsumi (STEL) — Bruker 120HR (0.002 cm 1 resolution) operated since 1996. It is fitted with four detectors for both solar and lunar measurements. Intercompared with the NPL travel instrument in March 1998. Remote control capability exists since 2004. Upgraded to Bruker 125 in 2007. |
| FTIR Spectrometer(Profile - multiple species) | T. Blumenstock (IMK-ASF), U. Raffalski (IRF), and Y. Matsumi (STEL) — Bruker 120HR (0.002 cm 1 resolution) operated since 1996. It is fitted with four detectors for both solar and lunar measurements. Intercompared with the NPL travel instrument in March 1998. Remote control capability exists since 2004. Upgraded to Bruker 125 in 2007. |
| UV/Visible Spectrometer(Multiple Species) | P. V. Johnston and K. Kreher (NIWA) – Operating for NO2 and ozone since 1991; extended to BrO and OClO in 1997. Operations discontinued in 2012 due to budget cuts. |
| Sonde(Aerosol) | N. Larsen (DMI) and J. Rosen (U. Wyoming) — Backscatter measurements of aerosol profiles available for the winter from 1991 to 2002. |
| Brewer(Ozone) | R. Kivi (FMI) – Brewer #037 observations beginning May 1988. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and R. Kivi (FMI) – SAOZ system for NO2 and ozone operated since February 1990, upgraded with a new detector in 1995. |
| Sonde(Aerosol) | E. Kyrö (FMI) and J. Rosen (U. Wyoming) – Backscatter aerosol profile measurements available for the winter from 1994–2010. |
| Sonde(Ozone) | R. Kivi (FMI) – Year round soundings approximately once per week with additional launches during winter and campaigns. NDACC data archived from 1991- 2004 under previous PI (Kyro). |
| Sonde(Water Vapor) | R. Kivi (FMI) – Cryogenic frost point sondes flown with a frequency ranging from every other month to twice per month. |
| Brewer(Ozone) | N. Jepsen (DMI) – Brewer #053 observations when sunlit conditions permit beginning in February 1998. Data through 2016 archived under original PI (P. Eriksen). |
| Lidar(Temperature) | A. Bhatt (SRI) and J. Thayer (U. Colorado) – Rayleigh/Mie system in operation since November 1992. Operated year-round with a daylight-measurement capability. Also retrieved backscatter-ratio profiles of noctilucent clouds and polar stratospheric clouds. Data archived from 1994 - 2008 under former PI, Heinselman and subsequently through 2015 under M. McCready. Measurements ceased in 2018 due to station closure. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and Nis Jepsen (DMI) - SAOZ system for NO2 and ozone operated since September 2017. The instrument previously operated at Thule station (1990-2016). New reference spectrum created and retrieval updated following UVVIS WG recommendations. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and V. Dorokhov (CAO) – SAOZ system for NO2 and ozone operated since December 1991, upgraded with a new detector in September 2005. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail, and J. P. Pommereau (LATMOS-IPSL) and V. Dorokhov (CAO) – SAOZ system for NO2 and ozone operated since November 1998 (with data archived since January 2001). |
| Sonde(Ozone) | V. Dorokhov (CAO) – Typically two launches per month in the January to April timeframe since 1997 with data archived since 2005. Also provides T/P, humidity and wind profiles. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) and V. Yushkov (CAO) – Backscatter measurements of aerosol profiles available for the winter from 1995–2003. |
| Sonde(Ozone) | V. Dorokhov (CAO) – ECC sondes launched twice per week from January to March, and once per month from April to December. Program ran from 1995–2005. Data archived for 2004–2005. |
| FTIR Spectrometer(Column - multiple species) | Johan Mellqvist (PI) and G. Persson (Chalmers U. Technology) — Bruker 125M (0.0035 cm 1 resolution) measurements conducted throughout the year. Intercompared with the NPL instrument in September/October 1994. Was upgraded from 120M to 125M in 2008-2009. Data available since late 1994; early data archived under previous PI (Galle). Current retrieval algorithms are SFIT4 and SFIT2. |
| UV/Visible Spectrometer(Multiple Species) | M. Van Roozendael (IASB-BIRA) – Two DOAS systems (one for NO2 and ozone, the other for BrO and OClO) operated during winter campaigns from January 1994 until March 1997, and continuously since January 1998. |
Northern Hemisphere Mid-Latitude Stations (30˚N - 60˚N)
| FTIR Spectrometer(Profile - multiple species) | M. Makarova (SPbU.) – Measurements using a Bruker IFS 125HR (resolution up to 0.002 cm-1) began in 2009. The observation site is located in a suburb of greater St. Petersburg. Retrieval algorithms: SFIT4 (V.0.9.4.4), PROFFIT 9.6. Ancillary atmospheric observations include those made using a UV/Vis. spectrometer, a microwave radiometer, and an aerosol lidar (ceilometer). Measurements affiliated with the Aerosol Robotic Network (AERONET) are also conducted. |
| Microwave Radiometer(Water Vapor) | P. Forkman and D. Murtagh (OSO) – Profiles at 40-80 km from 22-GHz microwave radiometer operating at Onsala Space Observatory since 2002. Also retrieves mesospheric CO and O3. |
| UV/Visible Spectrometer(Multiple Species) | A. Gruzdev and A. Elokhov (IAP) – Morning and evening NO2 measurements since 1990. Hosted instrument intercomparison in September 1997. |
| FTIR Spectrometer(Column - multiple species) | J. Notholt and M. Palm (U. Bremen) — Bruker 120HR operated from 2000-2003, Bruker 125HR since 2004. Data archived since 2002. Maximum resolution 0.0028 cm 1. Typically make one or two observations per week. Retrieval with SFIT2, SFIT4, and GFIT. The flat surroundings are conductive to satellite validation. The FTIR observations are complemented by DOAS measurements. |
| FTIR Spectrometer(Profile - multiple species) | J. Notholt and M. Palm (U. Bremen) — Bruker 120HR operated from 2000-2003, Bruker 125HR since 2004. Data archived since 2002. Maximum resolution 0.0028 cm 1. Typically make one or two observations per week. Retrieval with SFIT2, SFIT4, and GFIT. The flat surroundings are conductive to satellite validation. The FTIR observations are complemented by DOAS measurements. |
| UV/Visible Spectrometer(Multiple Species) | G. Vaughan (U. Manchester) – SAOZ system for NO2 and ozone operated since 1991. Also operated at Lerwick, UK (60.1˚N, 1.1˚E) and Aberdeen, UK (57˚N, 2˚W) during the EASOE (November 1991 to April 1992) and SESAME (February to April 1994) campaigns, respectively. Ceased operations in May 2019 due to GPS failure. |
| Sonde(Ozone) | B. Kois and M. Orlowski (IMGW-PIB) — ECC sondes launched weekly since June 1993. Additional sondes have been launched in concert with the MATCH campaigns and the Envisat/ SCIAMACHY validation program. Database extends back to 1979 with OSE sondes. The station’s WMO number is 12374. Data archived since 1995; early data archived under previous PIs (Litynska and Zablocki). |
| Sonde(Ozone) | P. Oelsner(DWD) — Weekly ECC + RS41 sondes launched weekly. Bimonthly ozone soundings are conducted jointly with the CFH sondes. |
| Sonde(Water Vapor) | R. Dirksen (DWD) – Cryogenic frostpoint hygrometer (CFH) sondes flown with a frequency ranging from every other month to twice per month. |
| Brewer(Ozone) | A. Piters and I. Nedeljkovic (KNMI) – Brewer #189 beginning in 2007. Brewer #100 from 1994 to 2006. Data in the NDACC database begin in 1994. Intercompared with traveling standard in August 2012 and in September 2014. Additional calibration for Brewer #189 in 2009-06, 2017-05, 2020-05. |
| UV/Visible Spectrometer(Multiple Species) | A. Piters (KNMI) - low-vertical resolution profiles of tropospheric NO2 and aerosol during daytime processed with the FRM4DOAS central processing system. |
| Sonde(Ozone) | A. Piters and I.Nedeljkovic (KNMI) – Database extends back to 1992 for ozone, temperature, and humidity. |
| UV/Visible Spectrometer(Multiple Species) | A. Piters (KNMI) - low-vertical resolution profiles of tropospheric NO2 and aerosol during daytime, total-columns of O3 during sunrise and sunset processed with the FRM4DOAS central processing system. |
| Brewer(Ozone) | M. Gill (ME) — Brewer (#088) MkIV observations beginning January 1993. Early data is archived under previous PIs (Lambkin, Varghese, and Gillespie). |
| Dobson(Ozone) | H. De Backer (RMIB) — Dobson #040 observations started in July 1971 and stopped at the end of May 2009. This instrument is being refurbished and will be relocated at Kiev, Ukraine under the responsibility of the University of Kiev. |
| Brewer(Ozone) | A. Mangold (RMIB) — Brewer #016 observations beginning in 1984. Brewer #178 is also onsight beginning in 2001. |
| Sonde(Ozone) | H. De Backer and R. Van Malderen (RMIB) — Brewer-Mast sondes launched three times per week from 1969 to March 1997. Z-ECC sondes used since April 1997. |
| UV Spectroradiometer(UV) | C. Brogniez, F. Auriol, and F. Minvielle (LOA) — Measurements of spectral UV irradiance (290 – 450 nm) with a double monochromator (JY HD10) were initiated in May 1997 and continued through 2008 with some interruptions due to instrument problems. The instrument took part in the SUSPEN intercomparison campaign (July 1997), and the QASUME instrument validation project (September 2004). In 2008 the JY HD10 was replaced with a Bentham DTMc300 spectroradiometer for which data are available beginning in 2009. |
| Sonde(Ozone) | P. Skrivankova (CHMI) — ECC sondes launched 3 times per week since January 1992 for profile measurements from 0 to 34 km. More frequent launches have occurred during campaigns. Also measures T/P, humidity and wind profiles. Data archived since 2004. |
| UV/Visible Spectrometer(Multiple Species) | U. Frieß (U. Heidelberg) – Multi-DOAS measurements of tropospheric and stratospheric trace gases since February 2017 using a commercial Airyx Skyspec 2D UV/Vis instrument. |
| UV Spectroradiometer(UV) | S. Simic and D. Rauter (BOKU-Met) — Measurement of the spectral distribution of UV irradiance (290 – 500 nm) with a Bentham DM150 spectroradiometer. Observations started in February 1998. |
| Dobson(Ozone) | V. Velazco (DWD) — Daily Dobson #104 observations on sunny days beginning May 1967; since 1986 only on work days. Data through June 2021 archived under previous PI U. Köhler. |
| Brewer(Ozone) | V. Velazco (DWD) — Daily Brewer #010 observations on sunny days since January 1984. Data through June 2021 archived under previous PI U. Köhler. |
| Lidar(Ozone) | W. Steinbrecht (DWD) — Measurements from 15 to 50 km several times per month on clear nights since October 1987. Intercomparison with travelling standard lidar (STROZ from NASA-GSFC) in October 2005. Another intercomparison with the STROZ system is planned for 2018 together with a transition to a new and improved system. |
| Lidar(Temperature) | W. Steinbrecht (DWD) — Measurements from 30 to 60 km several times per month on clear nights since October 1987. Intercomparison with travelling standard lidar (STROZ from NASA-GSFC) in October 2005. Another intercomparison with the STROZ system is planned for 2018 together with a transition to a new and improved system. |
| Sonde(Ozone) | W. Steinbrecht (DWD) — Observations with Brewer-Mast ozonesondes since 1967. One launch per week before 1978; 2 to 3 launches per week since 1978. Routine comparison of sonde and lidar profiles. Data archived at NDACC since 1987. |
| Lidar(Aerosol) | T. Trickl (IMK-IFU) — System at Garmisch similar to the instrument at Mauna Loa (19.54°N, 155.58°W); operated as a ruby system from 1976 to 1990 and as a Nd:YAG system since 1991 retrieving from 5–30 km. Data archived (1994–2015). Early data is archived under a previous PI (Jaeger). Resumed operation in 2017 with new system on Zugspitze Mountain. |
| UV Spectroradiometer(UV) | P. Werle (IMK-IFU) — Measurements of spectral distribution of UV irradiance using a double monochromator Bentham DTM300V since 1994. Work initiated here and Zugspitze for the ground truthing of satellite-derived UV maps. Operations were suspended in 2002. Data archived under previous PIs Seckmeyer and Thiel. |
| Lidar(Aerosol) | Vogelmann (IMK-IFU) — Measurements at Zugspitze since 2016 continue the record at nearby Garmisch. |
| UV Spectroradiometer(UV) | P. Werle (IMK-IFU) — Measurements of spectral distribution of UV irradiance using a double monochromator Bentham DTM300V since 1995. Work initiated here and at Garmisch for the ground truthing of satellite-derived UV maps. Early data archived under previous PIs Seckmeyer and Theil. |
| FTIR Spectrometer(Column - multiple species) | R. Sussmann (IMK-IFU) — Bruker 120HR (0.0028 cm 1 resolution) operating since 1995 at Zugspitze. Remote control of measurements implemented in early 1998. An update to Bruker 125HR electronics was performed in Jan 2006. Column retrieval and a priori profile optimization fully automated. A NIR-FTIR operates nearby at Garmisch in association with the TCCON Network. |
| FTIR Spectrometer(Profile - multiple species) | R. Sussmann (IMK-IFU) — Bruker 120HR (0.0028 cm 1 resolution) operating since 1995 at Zugspitze. Remote control of measurements implemented in early 1998. An update to Bruker 125HR electronics was performed in Jan 2006. Column retrieval and a priori profile optimization fully automated. A NIR-FTIR operates nearby at Garmisch in association with the TCCON Network. |
| UV Spectroradiometer(UV) | S. Simic and D. Rauter (BOKU-Met) — Measurement of the spectral distribution of UV irradiance (290 – 500 nm) with a Bentham DM150 spectroradiometer. Observations started in February 1997. |
| Microwave Radiometer(Ozone) | A. Murk (U. Bern) — Volume mixing ratio profiles (20 to 70 km) since November 1994 at Bern. Site is 60 km from the Jungfraujoch. Intercompared with Payerne, Switzerland (46.8˚N, 7.0˚E) ozonesondes. In the long-term future, this instrument will be replaced. A new instrument is operating on a regular basis in Payerne. Early data archived under previous PI Kämpfer. |
| Microwave Radiometer(Water Vapor) | A. Murk (U. Bern) — Volume mixing ratio profiles (20 to 70 km) initiated at Bern in Winter 2001/2001 and moved to Zimmerwald (46.88˚N, 7.47˚E) in September 2006. Validated against balloon sondes for 20 to 25 km, and against HALOE and POAM above 25 km. Early data archived under previous PI Kämpfer. |
| Lidar(Water Vapor) | G. Martucci and A. Haefele (MeteoSwiss) — Operational since August 2008 as part of the RALMO (RAman Lidar for Meteorological Observations) project. |
| Microwave Radiometer(Ozone) | E. Maillard Barras and A. Haefele (MeteoSwiss) — Deployed from January 2000 to June 2002 in Bern (46.95˚N, 7.45˚E, prior to permanent siting at Payerne. The SOMORA instrument provides ozone volume mixing ratios between 20/25 and 65 km with a 1-hour time resolution. Data through June 2019 are archived under previous PI Ruffieux. |
| Sonde(Ozone) | Eliane Maillard Barras and G. Romanens (MeteoSwiss) — Observations with Brewer Mast ozonesondes three times per week beginning November 1966, then ECC since September 2002. Data archived since 1990. Data through 2013 archived under previous PI (Viatte). Data from 2014 to 2021 archived under previous PI (Stübi). |
| Dobson(Ozone) | R. Ruefenacht (MeteoSwiss) and L. Egli (PMOD/WRC Davos) — Daily Dobson #062 observations. This instrument moved from Arosa in February 2021. |
| Dobson(Ozone) | R. Stübi (MeteoSwiss) and H. Schill (PMOD/WRC Davos) — Daily Dobson #101 observations until 2014, Dobson #062 after. The Dobson has been fully automated since 2014. Data begin in July 1926, archived since 1990. This instrument moved to Davos in February 2021. Data through 2013 archived under previous PI (Viatte). |
| FTIR Spectrometer(Profile - multiple species) | E. Mahieu (U. Liège) — A Bruker 120HR with 5m maxOPD has been in regular operation since 1994. Remote control of this instrument was implemented in October 2008. |
| FTIR Spectrometer(Profile - multiple species) | P. Demoulin (U. Liège) — A home-built FTS with 2m maxOPD operated from 1984–2008. Data from this instrument are being reprocessed and archived for the 1989–2008 time period. |
| UV/Visible Spectrometer(Multiple Species) | M. Van Roozendael (IASB-BIRA) — SAOZ system for NO2 and ozone operated since June 1990. Upgraded with new detector (more pixels) and control system in late 1998. A MAXDOAS system has been in operation since July 2010. |
| UV Spectroradiometer(UV) | A. de la Casinière and T. Cabot (IRSA - UJF Grenoble) — Measurements of spectral UV irradiance with spectroradiometer (SPUV02, JY HD10 system) operational from 2000 to 2003. The instrument was intercompared at Huelva, Spain in 2002. |
| UV Spectroradiometer(UV) | A. de la Casinière and T. Cabot (IRSA-UJF Grenoble) — Measurements of spectral UV irradiance with spectroradiometer (IRSA, Bentham DM150 system) operational from 2001 to 2005. |
| Dobson(Ozone) | J. de La Noë (Bordeaux) – Daily Dobson #49 observations beginning in 1985, but previously carried out at Biscarosse (60 km from Bordeaux) from 1976 to 1983. Instrument moved to Observatoire Midi-Pyrénées/Lannemezan in September 2004. Data archived for 1996–2003. |
| Microwave Radiometer(Ozone) | J. de La Noë and N. Schneider (Bordeaux) — Profiles from 25 to 70 km obtained on a year-round basis since January 1995. Ceased operations in mid-2003. |
| FTIR Spectrometer(Column - multiple species) | T. Nagahama (STEL) — Bruker 120HR (0.0028 cm 1 resolution) operating at the Observatory since April 1996. The instrument experienced sun tracker failures from April 2007 to June 2009 and again in late 2010. Not currently operational. NDACC measurements were scheduled to resume in mid-2015 with a Bruker 125HR. However, no data have been archived and measurements ceased in September 2016. The instrument was scheduled to be moved to ISEE in Nagoya. Total column data from 1996 to 2000 archived under former PI Kondo , and vertical distribution data from 1996 to 2007 archived by Y. Nagahama (NIES). |
| FTIR Spectrometer(Profile - multiple species) | T. Nagahama (STEL) — Bruker 120HR (0.0028 cm 1 resolution) operating at the Observatory since April 1996. The instrument experienced sun tracker failures from April 2007 to June 2009 and again in late 2010. Not currently operational. NDACC measurements were scheduled to resume in mid-2015 with a Bruker 125HR. However, no data have been archived and measurements ceased in September 2016. The instrument was scheduled to be moved to ISEE in Nagoya. Total column data from 1996 to 2000 archived under former PI Kondo , and vertical distribution data from 1996 to 2007 archived by Y. Nagahama (NIES). |
| UV/Visible Spectrometer(Multiple Species) | Y. Matsumi (STEL), M. Koike and Y. Kondo (U. Tokyo), and P. V. Johnston (NIWA) — Measurements of NO2 and ozone have been made at the Observatory available from 1991 to 2008. |
| Dobson(Ozone) | M.-R. De Backer-Barilly (GSMA Reims) and G. McConville (NOAA/ESRL) — Total ozone and Umkehr database using Dobson instrument #085 extends back to 1983. |
| Lidar(Aerosol) | J. Jumelet and S. Khaykin (LATMOS-IPSL) — Began NDACC operations in March 1991 (stopped from 1995–1998 and between April 2008 and July 2009). Early data archived under previous PI (David). |
| Lidar(Aerosol) | S. Khaykin and S. Godin-Beekmann (LATMOS-IPSL) — Began NDACC operations in 1994. Uses Rayleigh-Mie channel of DIAL Stratospheric Ozone lidar (355nm). |
| Lidar(Ozone) | S. Godin-Beekmann (LATMOS-IPSL) — Began NDACC operations in January 1991. Database extends back to 1985. New lidar system installed in January 1994. Participated in July 1992, 1997 and 2017/2018 intercomparisons with GSFC mobile lidar and sondes. |
| Lidar(Temperature) | Ph. Keckhut and A. Hauchecorne (LATMOS-IPSL) — Began NDACC operations in January 1991. Database extends back to 1979. Participated in July 1992, 1997 and 2017/2018 intercomparisons with GSFC mobile lidar. Data from 2011 to October 2012 are of low quality and are not archived. |
| Lidar(Tropospheric Ozone) | G. Ancellet (LATMOS-IPSL) — Began NDACC operations in January 1991. Database extends back to 1989. New lidar system installed in March 2012 (Licel electronic boards). Participated in Aug. 1989, March 1991 intercomparison with aircraft and ozonesondes and in 2017/2018 intercomparison with GSFC mobile lidar and ozonesondes. |
| Lidar(Water Vapor) | Ph. Keckhut and A. Hauchecorne (LATMOS-IPSL) — Same system as used for temperature measurements. Water Vapor measurements started in 1999. System shut down in 2017 for system redesign planned for 2018. |
| Lidar(Wind) | S. Khaykin and A. Hauchecorne (LATMOS-IPSL) — Deployed at OHP in 1991. Began NDACC operations in September 2021. Database extends back to 2019. Participated in intercomparison campaigns with radiosondes in 2017, 2018 and 2019. |
| UV Spectroradiometer(UV) | C. Brogniez, F. Auriol, and F. Minvielle (LOA) – Spectral irradiance measurements (290 – 400 nm) using a Bentham DTMc 300 spectroradiometer that was installed at the end of 2008. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) – SAOZ system for NO2 and ozone operating since June 1992, upgraded with a new detector in June 1995; NDACC intercomparisons in 1992, 1995, 1996, and 2003. A new mini-SAOZ was installed in September 2011 for long-term comparisons with existing SAOZ to ascertain NDACC qualifications. |
| Sonde(Ozone) | G. Ancellet and S. Godin-Beekmann (LATMOS-IPSL) — Soundings once per week since 1984: Brewer Mast (1984–1991), ECC since 1991 (SPC before 1997, ENSCI since 1997). Data archived since 1991 at NDAAC and WMO for Brewer Mast. Participated in July 1997, 2017/2018 intercomparisons with GSFC mobile lidar and in JOSIE Juelich chamber evaluation. |
| Lidar(Aerosol) | H. Fast (EC) — Year-round operation of Rayleigh system from late 1989 through April 2000. Data archived under the previous PI (Pal) for 1991 to 1993 and for 1996 to 1997. Instrument positioned nearby at CREStech building 43.78N 79.50W. |
| Lidar(Ozone) | H. Fast (EC) — DIAL system with year-round nighttime measurements from 1991 through 1997; also retrieved aerosol and temperature profiles. Data archived under the previous PI (Pal) for 1991 to 1997, with no data for 1995. Instrument positioned nearby at CREStech building 43.78N 79.50W. |
| Lidar(Temperature) | H. Fast (EC) — Year-round operation of Rayleigh system from late 1989 through April 2000. Data archived under the previous PI (Pal) for 1991 to 1993 and for 1996 to 1997. Instrument positioned nearby at CREStech building 43.78N 79.50W. |
| UV/Visible Spectrometer(Multiple Species) | X. Zhao (ECCC) - A SkySpec-1D instrument is deployed at Downsview Toronto, Canada since 2015. The instrument consists of a spectrometer unit that houses two spectrometers. With a prism telescope scanning in a range from 1 to 90 degrees elevation angles, the instrument observes UV-Visible spectra from 300 nm to 560 nm with a resolution of 0.6 nm. |
| FTIR Spectrometer(Column - multiple species) | K. Strong (U. Toronto) — Bomem DA8 (0.004 cm-1 resolution) installed October 2001; routine measurements since May 2002. |
| FTIR Spectrometer(Profile - multiple species) | K. Strong (U. Toronto) — Bomem DA8 (0.004 cm-1 resolution) installed October 2001; routine measurements since May 2002. |
| Microwave Radiometer(Ozone) | A. Mizuno (STEL) and T. Nagahama and H. Ohyama (ISEE) — Profiles from 15 to 60 km obtained on a year-round basis since December 1999. |
| FTIR Spectrometer(Column - multiple species) | T. Nagahama (STEL) and I. Morino (NIES) — Bruker 120M (0.004 cm 1 resolution) installed by STEL in May 1995. Tested at Toyokawa (35°N, 137°E) from December 1994 to April 1995. Bruker 120/5HR (0.0035 cm-1 resolution) installed by NIES in 2013. Total column data prior to 2000 is archived under previous PI (Kondo). Operations suspended from mid-2010 to 2013. |
| FTIR Spectrometer(Profile - multiple species) | T. Nagahama (STEL) and I. Morino (NIES) — Bruker 120M (0.004 cm 1 resolution) installed by STEL in May 1995. Tested at Toyokawa (35°N, 137°E) from December 1994 to April 1995. Bruker 120/5HR (0.0035 cm-1 resolution) installed by NIES in 2013. Total column data prior to 2000 is archived under previous PI (Kondo). Operations suspended from mid-2010 to 2013. |
| UV/Visible Spectrometer(Multiple Species) | Y. Matsumi (STEL), M. Koike and Y. Kondo (U. Tokyo), and P. V. Johnston (NIWA) — Measurements of NO2 and ozone were made at the Observatory from March 1994 to October 1997. |
| Dobson(Ozone) | F. Gheusi, S. Derrien, and A. Vial (Univ. Paul Sabatier) — Daily Dobson #49 measurements since October 2004, continuing previous observations at Biscarosse (60 km from Bordeaux) from 1976 to 1983 and Observatoire de Bordeaux (44.83°N, 0.52°W) from 1985 to 2004. |
| Lidar(Temperature) | R. Sica (Univ. of Western Ontario) — Rayleigh temperature measurements since 1993. Raman temperature measurements since 1999. Significant data gaps in 2008–2010. Minimal data in 2010 due to instrument re-location. After replacing major components, operations restarted October 2017. Awaiting funding decision for operations beyond April 2018. |
| Lidar(Water Vapor) | R. Sica (Univ. of Western Ontario) — Raman water vapor measurements since 1999. Significant data gaps in 2008–2010. No data in 2010 due to instrument re-location. After replacing major components, operations restarted October 2017. Awaiting funding decision for operations beyond April 2018. |
| UV/Visible Spectrometer(Multiple Species) | V. Sinyakov (KNU) — Morning and evening NO2 measurements since 1983. Participated in 1997 intercomparison at Zvenigorod. |
| Lidar(Water Vapor) | G.L. Liberti (ISMAR-CNR) — Tropospheric water vapor Raman lidar system operational since May 2002. Elastic channel observation at 355 nm and 532 nm also available. Also retrieves temperature between 15 and 80 km. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) Backscatter measurements of aerosol profiles available for May 1989 – September 2000. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) — Dustsonde measurements from 1971–1988. |
| UV/Visible Spectrometer(Multiple Species) | A. Bais, D. Karagkiozidis (LAP-AUTH) – Zenith measurements of NO2 and ozone derived from two UV/Vis miniature CCD spectrometers (Avantes) operating at Thessaloniki, Greece. Data are available since 2018 (Phaethon 7) and 2020 (Phaethon 8). Phaethon 7 was validated during the CINDI-2 campaign. |
| Lidar(Aerosol) | P. Di Girolamo (Scuola di Ingegneria, Università degli Studi della Basilicata) — Raman lidar system (BASIL) began operations in 2004 and entered NDACC in 2012. |
| Lidar(Temperature) | P. Di Girolamo (Scuola di Ingegneria, Università degli Studi della Basilicata) — Raman lidar system (BASIL) began operations in 2004 and entered NDACC in 2012. |
| Lidar(Water Vapor) | P. Di Girolamo (Scuola di Ingegneria, Università degli Studi della Basilicata) — Raman lidar system (BASIL) began operations in 2004 and entered NDACC in 2012. |
| Dobson(Ozone) | G. McConville (NOAA/ESRL) — Daily Dobson #061 observations beginning September 1966. |
| Lidar(Aerosol) | J. E. Barnes (NOAA/ESRL) — Aerosol measurements using Nd:YAG system. The database for 532-nm backscatter extends back to January 2000. Not operational since 2012. |
| UV Spectroradiometer(UV) | A. Geddes (NIWA), S. Stierle (NOAA/ESRL), B. Liley, M. Kotkamp — Spectral UV irradiance measurements (285-450 nm) since June 1998. Three different NIWA double monochromators have been used at three sites in and around Boulder. The present instrument (UV5) has been in use since August 2001, and participated in the 2003 International UV Spectroradiometer Intercomparison at Table Mountain, CO. It is calibrated biannually with external reference lamps and weekly stability calibrations are conducted with an internal lamp. Data is archived since 2004. |
| FTIR Spectrometer(Multiple Species) | J. Hannigan and I. Ortega and M. Coffey (ret) (NCAR) — Bruker 120M (250cm OPD) installed at South Mountain in 1999 in bldg. 1985, operating under autonomous control. Instrument was moved to bldg. 1971 (1km from previous location at same altitude) in Summer 2011. In May 2015 a new Bruker 125HR FTIR (also 250cm OPD) operating with new software control and new solar tracker was installed. |
| Sonde(Ozone) | B. Johnson (NOAA/ESRL) — Weekly ECC sondes since June 1991. |
| Sonde(Water Vapor) | D. Hurst (NOAA/ESRL) — Monthly NOAA frost point hygrometer sondes launched year-round since 1980 to obtain profiles of water vapor, temperature, pressure, and winds from surface to ~26 km. An ECC ozonesonde is part of the payload when the NOAA FPH is launched. |
| Sonde(Water Vapor) | B. Demoz (UMBC) — Monthly CFH radiosondes have been launched year-round since 2012 to obtain profiles of water vapor, temperature, pressure, and winds from the surface to about 30km. Although not with regularity — these CFH measurements extend back to 2005. A majority of these soundings are accompanied with an ECC Ozonesonde and RS92 and/or RS41. Frequent coordinated launches with the NOAA-NWS Sterling test site are made to investigate spatial homogeneity and sampling coordination with Satellite overpass. Nearly all launches are within an hour of satellite overpass times and unique for Cal-Val opportunity. |
| Dobson(Ozone) | G. McConville (NOAA/ESRL) and A. M. Thompson (GSFC) — Daily Dobson #038 observations beginning June 1967. Data is archived since 1995. |
| Sonde(Ozone) | A. M. Thompson (GSFC) — Weekly launches of ECC sondes. Program began in July 1967 with data originally archived at NDACC beginning in 1995 under previous PI Schmidlin (WFF). |
| Microwave Radiometer(Water Vapor) | J. Oh and S Ka (SWU) — Operation of the SWARA system since 2006 with instrument upgrades occurring in 2011. |
| Lidar(Ozone) | H. Nakane (NIES) — Also retrieved temperature and aerosols. No longer operational. Data archived for August 1988 to February 2010. |
| FTIR Spectrometer(Profile - multiple species) | I. Morino (NIES) - Instrument NDACC Affiliated September 2022. |
| UV/Visible Spectrometer(Multiple Species) | Y. Kondo (U. Tokyo) and P. V. Johnston (NIWA) – Measurements of NO2 and ozone were made at the Observatory from 1992 to 1996. |
| Lidar(Tropospheric Ozone) | M. Newchurch and S. Kuang (U. Alabama, Huntsville) — Tropospheric ozone DIAL system operational since 2008. Measurements are from 1 – 12 km daytime and nighttime. A low altitude channel (0.1 – 2 km) was added in February 2013. Addition of 2-axis hemispheric scanner in 2017, e.g. for horizontal measurements. System to be integrated into a truck for mobile deployments. |
| Lidar(Aerosol) | T. Leblanc (JPL) — Aerosol measurements at 353nm from 1989 to August 1999 and from 355 nm from November 1999 on. Data up to Dec. 2013 archived under previous PI (McDermid). |
| Lidar(Ozone) | T. Leblanc (JPL) — Ozone and temperature database extends back to 1989. Instrument has been used for testing, research, and intercomparisons. Data up to Dec. 2013 archived under previous PI (McDermid). |
| Lidar(Temperature) | T. Leblanc (JPL) — Ozone and temperature database extends back to 1989. Instrument has been used for testing, research, and intercomparisons. Data up to Dec. 2013 archived under previous PI (McDermid). |
| Lidar(Tropospheric Ozone) | T. Leblanc (JPL) — Tropospheric ozone system operational since November 1999. Data up to Dec. 2013 archived under previous PI (McDermid). |
| Lidar(Water Vapor) | T. Leblanc (JPL) – Tropospheric and lower stratospheric water vapor Raman lidar system operational since July 2005. Data prior to 2008 was experimental and is not in the NDACC archive. |
| Microwave Radiometer(Ozone) | A. Parrish (U. MA), I. S. Boyd and B. J. Connor (BC Consulting) — Deployed from August 1989 – June 1992 prior to permanent siting at Lauder. |
| Microwave Radiometer(Water Vapor) | G. Nedoluha and R. M. Gomez (NRL) and I. S. Boyd (BC Consulting) — Instrument #1 (WVMS1) deployed from January to October 1992 and May to November 1993; WVMS3 deployed from September 1995 until March 1996 when it was deployed to Mauna Loa (19.54˚N, 155.58˚W); WVMS2 deployed September 1993 to November 1997 and operated intermittently from November 2003 to July 2008. WVMS4 replacement of WVMS2 began in July 2008 and has operated continuously from December 2008 to present over the altitude range (26 – 80 km). |
| FTIR Spectrometer(Column - multiple species) | C. Rinsland (LaRC) — Continuous record of infrared solar spectra from 1978 to 2005 using the FTS (0.005 cm 1 resolution) in the McMath Pierce Telescope. Operations resumed briefly in 2009. |
| FTIR Spectrometer(Multiple Species) | W. Wang (AIOFM) and C. Liu (USTC)–Measurements using a Bruker IFS 125HR (resolution up to 0.001 cm-1) began in 2015. The observation site is located in a suburb of Hefei city, Anhui province, China. Retrieval algorithm is SFIT4 (V.0.9.4.4). |
Northern Hemisphere Subtropical and Tropical Stations (0˚N - 30˚N)
| Brewer(Ozone) | A. Redondas and E. Cuevas (AEMET) — Brewer measurements initiated in May 1991 using a Mark II single monochromator. Replaced with a double Brewer #157 in July 1998. |
| FTIR Spectrometer(Column - multiple species) | M. Schneider (KIT-IMK) and O. Garcia (AEMET) — Measurements performed using a Bruker 120M (0.0035 cm-1 resolution) since February 1999. Replaced with a Bruker 125HR (0.0035 cm-1 resolution) in 2005. |
| FTIR Spectrometer(Profile - multiple species) | M. Schneider (KIT-IMK) and O. Garcia (AEMET) — Measurements performed using a Bruker 120M (0.0035 cm-1 resolution) since February 1999. Replaced with a Bruker 125HR (0.0035 cm-1 resolution) in 2005. |
| UV/Visible Spectrometer(Multiple Species) | M. Navarro Comas (INTA) — NO2 and ozone data using a scanning spectrometer. Archived under former PIs from 1993–1999 (Yela), 2000–2013 (Gil), and continues with current PI. Instrument participated in the 1996 OHP intercomparison. Also retrieves column abundances of ozone, H2O, and O4. |
| Sonde(Ozone) | C. Torres and N. Prats (AEMET) — Weekly ECC sondes since November 1992 for profile measurements from 0 to 34 km. More frequent launches have occurred during specific campaigns. |
| Microwave Radiometer(ClO) | G. Nedoluha and R. M. Gomez (NRL); B. J. Connor, and I. S. Boyd (BC Consulting); and A. Parrish (U. MA) — One of three NDACC instruments developed by Millitech; in operation since 1992. Two instruments were intercompared at this site for 22 months from 1993 to 1995 prior to the Antarctic deployment of one of them (see Scott Base entry). The instrument was moved to Mauna Loa in September 2015 where it underwent major changes. It returned to Mauna Kea in June 2018. |
| Sonde(Ozone) | B. Johnson and S. Oltmans (NOAA/ESRL) — Weekly soundings since 1982. NDACC data archived since 1991. |
| Sonde(Water Vapor) | D. Hurst (NOAA/ESRL) — Monthly NOAA frostpoint hygrometer sondes launched year-round since 2010 to obtain profiles of water vapor, temperature, pressure, and winds from surface to ~26 km. An ECC ozonesonde is part of the payload when the NOAA FPH is launched. |
| Dobson(Ozone) | G. McConville (NOAA/ESRL) — Daily Dobson #076 observations beginning December 1963, with about 20 Umkehr retrievals per month. |
| Lidar(Aerosol) | J. E. Barnes (NOAA/ESRL) — Nd:YAG system began operations in April 1994. Temperature retrievals began in June 1994. The Nd:YAG began retrieving water vapor in October 2005. Only aerosol data continues is archived and continues to be active. |
| Lidar(Aerosol) | J. E. Barnes (NOAA/ESRL) — Ruby system operational from 1974 to January 1998. |
| Lidar(Aerosol) | T. Leblanc (JPL) — Multi-wavelength system deployed in July 1993. Data up to Dec. 2013 archived under previous PI (McDermid). |
| Lidar(Ozone) | T. Leblanc (JPL) — Multi-wavelength system deployed in July 1993. Data up to Dec. 2013 archived under previous PI (McDermid). |
| Lidar(Temperature) | J. E. Barnes (NOAA/ESRL) — Nd:YAG system began operations in April 1994. Temperature retrievals began in June 1994. The Nd:YAG began retrieving water vapor in October 2005. Only aerosol data continues is archived and continues to be active. |
| Lidar(Temperature) | T. Leblanc (JPL) — Multi-wavelength system deployed in July 1993. Data up to Dec. 2013 archived under previous PI (McDermid). |
| Lidar(Water Vapor) | J. E. Barnes (NOAA/ESRL) — Nd:YAG system began operations in April 1994. Temperature retrievals began in June 1994. The Nd:YAG began retrieving water vapor in October 2005. Only aerosol data continues is archived and continues to be active. |
| Microwave Radiometer(Ozone) | G. Nedoluha and R. M. Gomez (NRL), A. Parrish (U. MA) and I. S. Boyd (BC Consulting) — One of two Millitech-built systems; installed in 1995 following testing and intercomparisons at Table Mountain Facility (34.4˚N, 117.7˚W). Participated in intercomparison at Mauna Loa in July 1995. Retrieving profiles from 20 to 64 km from July 1995 to April 1996 and from August 1996 to May 2015. Measurements (20 – 72 km) with a new instrument began in 2016. |
| Microwave Radiometer(Water Vapor) | G. Nedoluha and R. M. Gomez (NRL) and I. S. Boyd (BC Consulting) — NRL Water Vapor Microwave Spectrometer #3 (WVMS3) operating since March 1996 following testing at Table Mountain Facility. Measurements have been taken with the new WVMS6 since 2010 over the altitude range (40 – 80 km). |
| UV Spectroradiometer(UV) | A. Geddes (NIWA), S. Stierle (NOAA/ESRL), B. Liley, M. Kotkamp (NIWA) — Global and scattered UV spectral irradiances (285 – 450 nm) since 1995. Data to 2014 archived under previous PI (McKenzie). |
| FTIR Spectrometer(Column - multiple species) | D. Murcray and R. Blatherwick (U. Denver) – Bomem DA3 (0.002 cm 1 resolution) operated once per week from November 1991 to November 1995. Automated Bruker 120HR (0.0035 cm 1 resolution) installed August 1995. Operations suspended in 2001, resumed briefly for 2003, then resumed intermittently from 2006–2009. |
| FTIR Spectrometer(Column - multiple species) | J. Hannigan and I. Ortega and M. Coffey (ret) (NCAR) — Measurements resumed in 2009 with a new automated system operating older U. Denver Bruker 120HR (250cm OPD). In 2011 the instrument was upgraded to a Bruker 125HR (data lapse March 2010-August 2011). In 2017 a new automated observations system was installed. |
| FTIR Spectrometer(Profile - multiple species) | J. Hannigan and I. Ortega and M. Coffey (ret) (NCAR) — Measurements resumed in 2009 with a new automated system operating older U. Denver Bruker 120HR (250cm OPD). In 2011 the instrument was upgraded to a Bruker 125HR (data lapse March 2010-August 2011). In 2017 a new automated observations system was installed. |
| UV/Visible Spectrometer(Multiple Species) | R. Querel and A. Thomas (NIWA) — DOAS, measuring trace gases from global and scattered irradiance, since 1996. Current measurements, since late April 2009, of NO2 and BrO slant columns are made using a CCD detector. Spectrometer damaged in early 2014 and returned to Lauder. Measurements are unlikely to continue. Data up to 2009 are archived under previous PI (Johnston). Data from 2009–2013 not yet archived. |
| FTIR Spectrometer(Profile - multiple species) | M. Grutter de la Mora and W. Stremme (UNAM) — Measurements performed routinely with a Bruker 120/5HR (0.0035 cm-1) acquired from DLR and upgraded by KIT-IMK in 2011. The instrument was installed in May 2012 at the Altzomoni Observatory, a high altitude station located in Central Mexico at 3,985 masl. Retrievals are performed with PROFFIT. |
| Sonde(Water Vapor) | R. Stauffer (NASA/GSFC), H. Vömel (NCAR), and Jorge Andrés Diaz (Universidad de Costa Rica) – Monthly and campaign-based launches of the Cryogenic Frostpoint Hygrometer since July 2005. Water vapor data provided up to ~28 km. In addition to the CFH, the payload includes an ECC ozonesonde and a radiosonde, initially the Vaisala RS80 radiosonde. The RS80 was superseded in April 2010 with the iMet-1-RSB radiosonde, and iMet-4-RSB radiosondes are used since July 2020. Ancillary data include PTU, GPS altitude and winds together with ozone partial pressure and mixing ratio to ~30 km. The current launch site is located on the campus of the Universidad de Costa Rica in San Pedro. Earlier sites at Juan Sanatamaria International Airport, Alajuela, and the Universidad Nacional, Heredia, are 19.2 and 10.2 km, respectively, west of the UCR site. |
| Brewer(Ozone) | A. Piters and I. Nedeljkovic (KNMI) — Continuous observations of total ozone and the UV spectrum, complemented by Umkehr zenith sky observations at dusk and dawn, have been made using a Brewer MkIII (#159) since April 1999. |
| FTIR Spectrometer(Profile - multiple species) | J. Notholt, and M Palm (U. Bremen) — Bruker 120M through 2013, updated to 125M electronics in 2013. Maximum resolution 0.005 cm‑1. Continuous measurements and archiving since 2004. Also typically make one or two campaigns per year. Retrieval with SFIT2, SFIT4 and GFIT. |
| Sonde(Ozone) | A. Piters and I. Nedeljkovic (KNMI) — Weekly balloon sondes launched year-round since September 1999, measuring profiles of ozone (ECC-6a cell), temperature, pressure, humidity, and wind (using GPS). |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and P. V. Johnston (NIWA) — SAOZ system measuring NO2 and ozone operated from July 1992 – July 1999. |
| UV/Visible Spectrometer(Multiple Species) | P. V. Johnston (NIWA) — NIWA system for NO2 and ozone operated beginning mid-1995. Measurements ceased in May 1999 due to a computer failure. |
Southern Hemisphere Subtropical and Tropical Stations (0˚N - 30˚S)
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and V. Amelie (SMA) – Mini-SAOZ system operated since September 2017. It is the modernized and lightened version of the SAOZ instrument. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) — Backscatter measurements of aerosol profiles available on a campaign basis for November 1995 to December 2004. |
| Sonde(Ozone) | M. Paulete Pereira Martins and F. Raimundo da Silva (INPE), A.M Thompson (GSFC) — Weekly ECC sondes since July 1967 with data archived since 2000. Previous PI Schmidlin is listed on the datafiles. |
| UV/Visible Spectrometer(Multiple Species) | Y. Kondo (Tokyo U.) and W. A. Matthews (NIWA) – NIWA system for NO2 and ozone operated from August 1994 to 1998. |
| Dobson(Ozone) | M. Tully (Bureau of Meteorology) — Daily Dobson #078 observations from 3 April 1990. |
| Dobson(Ozone) | G. McConville (NOAA/ESRL) — Daily Dobson #042 observations beginning December 1975. |
| Sonde(Ozone) | B. Johnson (NOAA/ESRL) — Weekly ECC sondes since June 1991 and archived since 1995. |
| Lidar(Ozone) | T. Portafaix (U. de la Réunion) and S. Godin-Beekmann (LATMOS-IPSL) — Stratospheric ozone DIAL system installed in May 2000. Year-round ozone profiles from 15 to 45 km. Instrumental problems from 2006 to present with intermittent operations from 2002–2006 and archived under former PI Baray. Operations suspended at St. Denis; instrument moved to Maido Observatory in February 2013. |
| Lidar(Temperature) | Ph. Keckhut (LATMOS-IPSL) — Measurements since April 1994 using Nd:YAG system. Operations suspended at St. Denis in 2009; instrument moved to Maido Observatory in February 2013. |
| UV Spectroradiometer(UV) | C. Brogniez, F. Auriol, and F. Minvielle (LOA) — Spectral irradiance measurements (290–400 nm) with a Bentham DTMc 300 spectroradiometer that was installed at the end of 2008. Participated in an intercomparison with the QASUME standard instrument in 2013. |
| FTIR Spectrometer(Profile - multiple species) | M. De Mazière (IASB-BIRA) – Bruker 120M operating on a campaign basis since 2002, archiving beginning in 2004. Installed in 2009 for quasi-permanent operation until end of December 2011. |
| FTIR Spectrometer(Profile - multiple species) | M. De Mazière (IASB-BIRA) – Bruker 125HR installed in 2011, mainly for TCCON measurements but provides NDACC measurements as needed. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and T. Portafaix (U. de la Réunion) — SAOZ system for NO2 and ozone operating since July 1993; upgraded with a new detector in 1997. |
| Sonde(Ozone) | J. Brioude (U. de la Réunion) — Measurements since September 1992. Once every 2 weeks from 1992–1999; once per week since 1999. Receiving equipment and acquisition software replaced for Meteo Modem system in August 2007. NDACC data archived since 1998. |
| Lidar(Ozone) | T. Portafaix (U. de la Réunion) and S. Godin-Beekmann (LATMOS-IPSL) — Stratospheric ozone DIAL system began making measurements at Maido in February 2013. Prior to this, measurements had been taken since 2000 in St. Denis, Reunion Island. |
| Lidar(Temperature) | Ph. Keckhut and A. Hauchecorne (LATMOS-IPSL) – Measurements since February 2012 using a Nd:YAG system. This instrument was previously operating at St. Denis, Reunion Island. |
| Lidar(Tropospheric Ozone) | V. Duflot (U. de la Réunion) — Tropospheric ozone DIAL system began making measurements in February 2013 in preparation for NDACC certification. Ozone profiles are routinely obtained from 6-19 km. Participated in Maido Lidar Calibration Campaigns in April 2013 and November 2013 and in the Maido Observatory Gas and Aerosols NDACC Experiment in May 2015. Instrument certified for NDACC affiliation February 2017. |
| Lidar(Water Vapor) | Ph. Keckhut (LATMOS-IPSL) and V. Duflot (U. de la Réunion) — Raman lidar system began measurement testing in February 2013, with valid measurements obtained since October 2013. Optimal range of the measurements is 2.2–22 km. Participated in Maido Lidar Calibration Campaigns in April 2013 and November 2013 and in the Maido Observatory Gas and Aerosols NDACC Experiment in May 2015. Instrument certified for NDACC affiliation February 2017. |
| Lidar(Wind) | S. Khaykin (LATMOS-IPSL) — Rayleigh-Mie Doppler wind lidar. Deployed at Maido – La Reunion in 2013. Affiliated at NDACC in 2024. Data base extends back to September 2019. Participated in intercomparing campaigns with radiosondes and Aeolus in 2019, 2021 and 2023. |
| FTIR Spectrometer(Profile - multiple species) | M. De Mazière (IASB-BIRA) — Bruker 125HR installed in March 2013 for NDACC measurements. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and G. Held (UNESP) — SAOZ system for NO2 and ozone operating since November 1995; upgraded with a new detector in February 2001. |
| UV Spectroradiometer(UV) | A. Geddes, J. B. Liley, M. Kotkamp (NIWA), S. Rhodes (BoM) — Measurements of spectral UV irradiance (285 – 450 nm) since 2005 using a Bentham (UV6 and UV7) spectrometer. Data prior to 2014 archived under former PI, McKenzie. |
| Dobson(Ozone) | M. Tully (Bureau of Meteorology) — Daily observations with Dobson #111 from 25 April 1985 to 10 July 2006, with Dobson #12 from 11 July 2006 to 24 January 2014, and with Dobson #111 since 21 January 2014. |
Southern Hemisphere Mid-Latitude Stations (30˚S - 60˚S)
| Sonde(Aerosol) | J. Rosen (U. Wyoming) — Dustsonde measurements from 1972–1980. |
| FTIR Spectrometer(Column - multiple species) | N. Jones and D. Griffith (U. Wollongong) — Operations since 1994. Instruments include a Bomem DA3 (0.02 cm 1 resolution) from December 1994 to May 1996, a Bomem DA8 (0.004 cm 1 resolution) from May 1996 to January 2008, and a Bruker HR 125 (0.004 cm 1 from January 2008 to present. |
| FTIR Spectrometer(Profile - multiple species) | N. Jones and D. Griffith (U. Wollongong) — Operations since 1994. Instruments include a Bomem DA3 (0.02 cm 1 resolution) from December 1994 to May 1996, a Bomem DA8 (0.004 cm 1 resolution) from May 1996 to January 2008, and a Bruker HR 125 (0.004 cm 1 from January 2008 to present. |
| Sonde(Ozone) | M. Tully (Bureau of Meteorology) — Weekly sondes year-round at Broadmeadows (37.68°S, 144.92°E) since 1998. Continues the program originally at Aspendale (1965–1982) and at Laverton (1983–1998). |
| Dobson(Ozone) | M. Tully (Bureau of Meteorology) — Daily observations with Dobson #105 from 11 May 1983 to 29 July 1998, with Dobson #115 from 29 July 1998 to 21 February 2000, with Dobson #105 from 21 February 2000 to 14 November 2001, with Dobson #115 from 15 November 2001 to 22 March 2010, with Dobson #111 from 22 March 2010 to 9 July 2013, with Dobson #111 from 22 March 2010 to 9 July 2013, and with Dobson #115 since 4 July 2013. Observations were previously made at Aspendale with Dobson #105 from 1 March 1972 to 17 July 1977, with Dobson #111 from 6 July 1977 to 28 February 1978, and with Dobson #105 from 22 February 1978 to 4 January 1983. |
| Dobson(Ozone) | R. Querel, S. Nichol, and H. Shiona (NIWA) and G. McConville (NOAA/ESRL) — Daily Dobson #072 observations beginning January 1987. |
| Lidar(Aerosol) | B. Liley (NIWA) — Mobile Nd:YAG system operated extensively at Tsukuba (36.05°N, 140.13°E) for retrievals from 6 to 36 km; deployed at Lauder in November 1992. Operated weekly. Data archived under PI, Uchino, up to mid-1999 and under PI, Nagai, onward. Ceased operations in 2009. |
| Lidar(Aerosol) | B. Liley (NIWA) — System used initially at Dumont d’Urville (66.67°S, 140.01°E). Aerosol profile data (5 to 35 km) available from 1994 to 1997 under PI, Steffanutti. |
| Lidar(Ozone) | R. Querel (NIWA) — Installed November 1994 by RIVM (former PI Daan Swart). Participated in OPAL and TOPAL intercomparison campaigns with GSFC mobile lidar, LaRC microwave ozone radiometer, and ozonesondes in 1995 and 2002, respectively. New laser installed and retrieval software updated in 2007; all data reprocessed. Retrieving ozone from 8 to 50 km year-round (attempting to get one measurement per week). Also retrieves aerosols (8 to 25 km) and temperature (8 to 70 km) profiles, though neither is submitted to the NDACC database. Ownership and PI responsibilities transferred from RIVM to NIWA as of July 2017. |
| Microwave Radiometer(Ozone) | G. Nedoluha and R. M. Gomez (NRL), A. Parrish (U. MA), and I. S. Boyd (BC Consulting) — Retrieving profiles from 20 to 70 km from October 1992 to October 2016. Instrument is identical to Mauna Loa system and participated in intercomparisons at Table Mountain Facility (34.4°N, 117.7°W) in July 1989. Observatoire de Haute Provence (43.94°N, 5.71°E) in July 1992, and Lauder in April 1995. This instrument also operated at Table Mountain Facility from July to November 1989 and from May 1990 to June 1992. A new instrument will be installed in the future. |
| Microwave Radiometer(Water Vapor) | G. Nedoluha and R. M. Gomez (NRL) and I. S. Boyd (BC Consulting) — NRL WVMS1 deployed from November 1992 to April 1993 and January 1994 to present following tests and intercomparisons at Table Mountain Facility (34.4°N, 117.7°W); presently retrieving from 40 to 80 km. WVMS1 was replaced by WVMS7 in 2011. |
| UV Spectroradiometer(UV) | A. Geddes, J. B. Liley, M. Kotkamp (NIWA) — Measurements of the spectral distribution of UV irradiance (285–450 nm) using a double monochromator since December 1989 and archived since 1991. In November 1993, the original UVL spectrometer (JYDH10), which allowed observations only in fair-weather conditions, was replaced by the UVM spectrometer (Bentham DM300). In September 1998, the integrating sphere on this instrument was replaced by a PTFE diffuser to allow all-weather observations, including during rain. There have been occasional periods of spectral sky radiance and spectral actinic flux observations. The latter also may be derived from spectral irradiance measurements. Direct beam spectral UV irradiance measurements have been made since 2011 (with the UV2 spectrometer). A variety of filter radiometers also have been used since 1992. Information regarding specific instruments and deployments are available from the PIs. Data through 2013 archived under former PI, McKenzie. |
| FTIR Spectrometer(Column - multiple species) | D. Smale and J. Robinson (NIWA) — Bruker 120M (400-4000 cm‑1 range, 0.0035 cm‑1 resolution) operating August 1990 to September 2001; Bruker 120HR (400–4000 cm-1 range, 0.0035 cm‑1 resolution) from October 2001 to May 2018. Bruker 125HR (400-4000 cm‑1 range, 0.0035 cm-1 resolution) operating November 2017–present. Intercomparisons between the 120HR and 125HR instruments occurred from November 2017 to May 2018. Prior to the Bruker 120M installation, campaign measurements were made in 1986–89 with a Bomem DA2 (0.02 cm-1 resolution). |
| FTIR Spectrometer(Profile - multiple species) | D. Smale and J. Robinson (NIWA) — Bruker 120M (400-4000 cm‑1 range, 0.0035 cm‑1 resolution) operating August 1990 to September 2001; Bruker 120HR (400–4000 cm-1 range, 0.0035 cm‑1 resolution) from October 2001 to May 2018. Bruker 125HR (400-4000 cm‑1 range, 0.0035 cm-1 resolution) operating November 2017–present. Intercomparisons between the 120HR and 125HR instruments occurred from November 2017 to May 2018. Prior to the Bruker 120M installation, campaign measurements were made in 1986–89 with a Bomem DA2 (0.02 cm-1 resolution). |
| UV/Visible Spectrometer(Multiple Species) | R. Querel (NIWA) - EnviMeS system processed with FRM4DOAS newly affiliated in December 2021. |
| UV/Visible Spectrometer(Multiple Species) | R. Querel (NIWA) — Zenith measurements of NO2 and ozone. Database extends back to 1980 using a grating scanning monochromator; BrO/OClO since 1995 using a CCD array; direct sun from 2001; MAXDOAS from 2004. Early data through 2012 archived under previous PI (Johnston). |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) and B. Liley (NIWA) — Backscatter measurements of aerosol profiles (0 to 34 km) monthly from February 1992–1998; two to three times per year for 1999–2000. No current activity. |
| Sonde(Ozone) | R. Querel (NIWA) — Weekly ECC sondes (DMT) year-round since August 1986 for obtaining profiles of ozone, temperature, pressure, and winds from 0 to 32 km. Early data archived under previous PIs (Bodeker and Zeng). |
| Sonde(Water Vapor) | R. Querel (NIWA) and D. Hurst (NOAA/ESRL) — Monthly NOAA frostpoint hygrometer sondes launched year-round since 2004 for obtaining profiles of water vapor, temperature, pressure, and winds from 0 to 32 km. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) — SAOZ system for NO2 and ozone operating since December 1995; upgraded with a new detector in January 2000. |
| Lidar(Ozone) | J. Salvador, E. Wolfram, and E. Quel (CEILAP) – Ozone DIAL system with periodic measurements going back to 2005. Began official NDACC operations in 2008. Measurements ended 2016 due to funding issues. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) and F. Orte (CEILAP) — SAOZ system for NO2 and ozone operating since March 2008. |
| Dobson(Ozone) | M. Tully (Bureau of Meteorology) — Daily observations with Dobson #006 from 9 December 1986 to 23 December 1993, with Dobson #012 from 23 December 1993 to 27 November 1997, with Dobson #006 20 November 1997 to 15 March 2002, with Dobson #012 from 15 March 2002 to 5 April 2006, with Dobson #006 from 6 April 2006 to 19 March 2017, and with Dobson #012 since 20 March 2017. |
| UV/Visible Spectrometer(Multiple Species) | R. Querel (NIWA) - SkySpec system processed with FRM4DOAS newly affiliated in December 2021. |
| UV/Visible Spectrometer(Multiple Species) | R. Querel (NIWA) — Zenith measurements of column NO2 since September 1995 with a grating scanning monochromator. Original spectrometer previously operated on Campbell Island. Spectrometer replaced in 2002 with a similar unit. Early data archived under previous PIs (Wood) for 1996–2003 and (Johnston) for 2006–2012. |
| Sonde(Ozone) | M. Tully (Bureau of Meteorology) — Weekly ECC sondes year-round since 1994. |
| UV Spectroradiometer(UV) | G. Bernhard and C. Booth (Biospherical Instr.) — Measurements of UV spectroradiometer irradiance, with an SUV-100 and GUV-511, initiated in November 1988. Operations ceased at the end of 2008 due to funding termination. |
| UV/Visible Spectrometer(Multiple Species) | M. Yela, O. Puentedura and M. Navarro (INTA) — Zenith measurements of column NO2 since 1994 with a grating scanning monochromator. Since 2015, MAXDOAS system has been operating. Scanning system will continue to take measurements until 2020 in order to overlap with those by the MAXDOAS systems. In 2017 joined NDACC. Data from 1994 to 2016 not yet archived. |
Southern Hemisphere High-Latitude Stations (60˚S - 90˚S)
| UV/Visible Spectrometer(Multiple Species) | M. Yela, O. Puentedura, and M. Navarro (INTA) — Zenith measurements of column NO2, since 1994 with a grating scanning monochromator. Since 2015, two MAXDOAS systems have been operating (one for NO2 and ozone) and the other for BrO and OClO. The scanning system will continue to take measurements until 2020 in order to overlap with those by the MAXDOAS systems. In 2015 joined NDACC. Data from 1994 to 2016 not yet archived. |
| UV Spectroradiometer(UV) | S. Stierle (NOAA/ESRL) and G. Bernhard (Biospherical Instr.) — Measurements of spectral distribution of UV irradiance from 285–600 nm in 0.2 nm steps with an SUV-100 double monochromator. Measurements were initiated in May 1988 and archived since 1990. Calibrated fortnightly during the measurement season. |
| UV/Visible Spectrometer(Multiple Species) | H. Roscoe (BAS) — SAOZ system for NO2 and ozone operated at this location from January 1990 until the station closed in December 1995. System operating at Rothera, Antarctica (67.57°S, 68.13°W) since January 1996. |
| Lidar(Aerosol) | J. Jumelet (LATMOS-IPSL) and M. Snels (ISAC-CNR) — Operated from March through November from 1989–1998. Data from 1999 to 2002 are of poor quality due to instrument degradation. Instrument inactive from 2002 until a new lidar was installed in January 2005. Operational since 2006. Data archived under former PIs Stephanuti (1989–1998) and David (2006–2010). |
| Lidar(Ozone) | M. Marchand (LATMOS-IPSL) and F. Cairo (ISAC-CNR) — Operated from 1991 to 2001. Data are archived from 1991–1998 under former PI (S. Godin-Beekmann). Operations ceased in 2001 due to instrument degradation. A new lidar was operational from 2006 until laser failure in 2013. Repairs are postponed. |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) — SAOZ system for NO2 and ozone operating since January 1988; upgraded with a new detector in 1994. |
| Sonde(Ozone) | J. Jumelet (LATMOS-IPSL) — Approximately 25 soundings per year. Database extends back to 1991. Data before 2003 archived under former PI (Goutail). |
| UV/Visible Spectrometer(Multiple Species) | S. Colwell (BAS) — SAOZ system operated at Faraday (UK Antarctic Station: 65.25°S, 64.27°W) from January 1990 until the station closed in December 1995. System operating at this location since January 1996. Data after 2011 not yet in archive. Early data archived under previous PI Roscoe. |
| UV/Visible Spectrometer(Multiple Species) | Y. Kondo (Tokyo U.) and W. A. Matthews (NIWA) – NIWA system for NO2 and ozone operated from 1990–1995. |
| UV/Visible Spectrometer(Multiple Species) | U. Friess, and U. Platt (U. Heidelberg) — Dual-channel DOAS spectrograph installed in January 1999 for measuring ozone, NO2, OClO, and BrO. |
| Sonde(Ozone) | P. van der Gathen and M. Rex (AWI) — Vaisala ECC-6a sondes launched weekly since 1992, with increased frequency during Austral spring. |
| Lidar(Aerosol) | M. Snels (ISAC-CNR) — Measurements are being taken twice daily (30–40 minutes per observation) from June throughout October since 2014. The system uses a NdYag laser emitting at 532 nm and 1064 nm; the 14 inch Cassegrain Schmidt telescope has 5 channels (a 532 nm high channel, a 532 nm low channel, a 532 nm depolarized channel, a 1064 nm channel and a Raman channel at 608 nm). |
| UV/Visible Spectrometer(Multiple Species) | A. Pazmino, F. Goutail (LATMOS-IPSL) — SAOZ system for column NO2 and ozone operating since Sept. 2007. |
| Dobson(Ozone) | S. Nichol and H. Shiona (NIWA) — Daily Dobson #017 observations beginning 1988. |
| UV Spectroradiometer(UV) | S. Stierle (NOAA/ESRL) and G. Bernhard (Biospherical Instruments) — Measurements of the spectral distribution of irradiance from 285-600 nm with an SUV-100 double monochromator. Measurements were initiated in March 1988. The SUV-100 is calibrated fortnightly during the measurement season. |
| FTIR Spectrometer(Column - multiple species) | D. Smale and J. Robinson (NIWA) — Trace gas profiles beginning in 1996 with a Bruker 120M (400–4000 cm 1 range, 0.0035 cm 1 resolution). A Bruker 125HR (400–4000 cm 1 range, 0.0035 cm 1 resolution) was installed in November 2014 and operated in parallel with the Bruker 120M. Intercomparisons between the two instruments occurred over the Austral Summer seasons 2014–2015 and 2015–2016) with the retirement of the Bruker 120M in February 2016. From 1991–1995 measurements were taken using a Bomem DA2 (0.02 cm 1 resolution) and an Eocom (0.06 cm 1 resolution). |
| FTIR Spectrometer(Profile - multiple species) | D. Smale and J. Robinson (NIWA) — Trace gas profiles beginning in 1996 with a Bruker 120M (400–4000 cm 1 range, 0.0035 cm 1 resolution). A Bruker 125HR (400–4000 cm 1 range, 0.0035 cm 1 resolution) was installed in November 2014 and operated in parallel with the Bruker 120M. Intercomparisons between the two instruments occurred over the Austral Summer seasons 2014–2015 and 2015–2016) with the retirement of the Bruker 120M in February 2016. From 1991–1995 measurements were taken using a Bomem DA2 (0.02 cm 1 resolution) and an Eocom (0.06 cm 1 resolution). |
| UV/Visible Spectrometer(Multiple Species) | R. Querel (NIWA) - SkySpec system processed with FRM4DOAS newly affiliated in December 2021. |
| UV/Visible Spectrometer(Multiple Species) | R. Querel (NIWA) — Zenith sky DOAS, NO2 column measurements since 1991 using a scanning grating monochromator. Two units operated in parallel, one at Scott Base, one at Arrival Heights. In 1998 a MAXDOAS UV/Vis spectrometer was installed and operated in conjunction with the University of Heidelberg. In 2005 a UV/Vis Grating CCD array spectrometer was installed for measurements of BrO and OClO. In November 2013 the spectrometer was reconfigured (wavelength region expanded) to include spectral measurements to permit NO2 retrievals. Some data archived under former PIs (Wood and Johnston). |
| UV/Visible Spectrometer(Multiple Species) | U. Frieß (U. Heidelberg), R. Querel (NIWA) and Dan Smale (NIWA) – Multi-DOAS measurements of tropospheric and stratospheric trace gases since October 2008 using an in-house built dual channel UV/Vis instrument. |
| Microwave Radiometer(ClO) | G. Nedoluha and R. M. Gomez (NRL); I. S. Boyd and B. J. Connor (BC Consulting); A. Parrish (U. MA), and T. Mooney (SUNY) — Millitech instrument deployed in January 1996 following measurements and intercomparisons at Mauna Kea (19.83°N, 155.48°W). Has been making measurements (16–43 km) yearly in the August–October period since then. |
| Lidar(Aerosol) | M. Snels (ISAC-CNR), F. Cairo (ISAC-CNR), and G. Di Donfrancesco (ENEA) — Database extends back to 1990. Measurements were made from February through October. Data from 1990 to 2002 are archived under previous PI (Adriani). Operations discontinued in October 2010. Relocation to Dome C planned for 2014. |
| UV/Visible Spectrometer(Multiple Species) | S. Solomon (NOAA/ESRL) — Database taken by R. Sanders (deceased) from February 1991 through February 1994 in the NDACC archive. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) — Dustsonde measurements of aerosol profiles from 1973 to 1979. |
| Sonde(Ozone) | T. Deshler (U. Wyoming) — Database dates back to 1986; twice per week springtime measurements only except for 1994 when operations were conducted in the winter period as well. Operations ceased in October 2010. |
| UV/Visible Spectrometer(Multiple Species) | M. Yela Gonzalez, O. Puentedura and M. Navarro Comas (INTA) — Zenith measurements of column NO2 since 1995 with a grating scanning monochromator. Since 2011, MAXDOAS system has been operating for BrO and OClO. Since 2014, another MAXDOAS system has been operating for NO2 and ozone. The scanning system will continue to take measurements until 2020 in order to overlap with those by the MAXDOAS systems. In 2017 joined NDACC. Data from 1995 to 2016 not yet archived. |
| Sonde(Ozone) | M. Yela Gonzalez, M. Navarro Comas, and J. A. Adame (INTA) — Vaisala ECC-6a sondes launched year-round (40 /year) since 1999, with increased frequency during Austral spring. More frequent launches have occurred during specific campaigns. Launches were reduced in August–December (2015–2016) due to budget issues. In 2017 joined NDACC. Data from 1999 to 2016 not yet archived. |
| Dobson(Ozone) | G. McConville (NOAA/ESRL) — Daily Dobson data archived since December 1963. Dobson #82 from 1963–2004; Dobson #80 from 2004-2009. Dobson #82 from 2009–2012. Dobson #42 replaced #82 at the end of 2012. |
| UV Spectroradiometer(UV) | S. Stierle (NOAA/ESRL) and G. Bernhard (Biospherical Instr.) — Spectral distribution of UV irradiance (280–600 nm) with an SUV-100 double monochromator. Measurements initiated in February 1988 and archived since 1990. Calibrated fortnightly. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) — Backscatter measurements from 1990 to 1991. |
| Sonde(Aerosol) | J. Rosen (U. Wyoming) — Dustsonde measurements of aerosol profiles from 1972 to 1980. |
| Sonde(Ozone) | B. Johnson and S. Oltmans (NOAA/ESRL) — Approximately 75 soundings per year since 1986. Data archived at NDACC since 1990. |