Column - multiple species

G. C. Toon (JPL) – Operation of a home-built interferometer (JPL MkIV with 0.006 cm 1 resolution) from January to November 2009.

G. Toon (JPL) – Operation of a home-built interferometer (JPL MkIV with 0.006 cm 1 resolution). Ground-based and balloon data obtained during the POLARIS campaign (summer 1997).

G. C. Toon (JPL) – Operation of a home-built interferometer (JPL MkIV with 0.006 cm 1 resolution). Archived database exists from SOLVE/THESEO campaign (winter 1999/2000), the SOLVE2 campaign from January to April 2003, and also January–February 2007. Balloon-borne data for this instrument also exist from flights above Esrange.

P. Woods, B. Bell, C. Paton-Walsh, and T Gardiner (NPL) – Bruker 120M (0.004 cm-1 resolution) used for intercomparisons and campaigns.  Measurements were made from May to June 1995.

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).

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).

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.

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.

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.

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.