News & Events for 2020

The NDACC Steering Committee held its annual meeting 4–6 November 2020. Originally scheduled to take place at the NOAA Center for Weather and Climate Prediction (NCWCP) in College Park, MD, the meeting was changed to a virtual format because of ongoing COVID-19 restrictions.

Total columns of the trace gases nitric acid (HNO3) and hydrogen chloride (HCl) are sensitive to variations in the lower stratospheric age of air (AoA), a quantity that describes transport timescales in the stratosphere.

The Cooperating Network Agreement between NDACC and the Pandonia Global Network (PGN) was finalized on 24 June 2020. As a result of this agreement, Barry Lefer (NASA Headquarters) and Angelika Dehn (also the ESA-ESRIN Representative) have been named PGN Co-Representatives to the NDACC Steering Committee.

There have been a number of ​​​​​​​changes to the NDACC Steering Committee, based on actions taken during the October 2019 NDACC Steering Committee meeting, as well as recent events.

The third SPARC/WMO Long-term Ozone Trends and Uncertainties in the Stratosphere (LOTUS) workshop originally planned for Helsinki was held virtually May 28–29, 2020.

New output for 2019 is available for all stations. The files are generated from a GMI chemistry transport model (CTM) simulation integrated with MERRA2 reanalysis meteorology—the same version as used for 1985–2018 files.

The ASOPOS (Assessment of Standard Operating Procedures for OzoneSondes) Panel, a group of ~20 ozonesonde expert data-providers, was formed in 2004. ASOPOS, under WMO/GAW sponsorship, has issued periodic reports on ozonesonde quality assurance

The OI3C has changed the date for the Quadrennial Ozone Symposium. The QOS will now be October 3 to 9, 2021 at the Yonsei University, Seoul, Korea.

The ESA Atmospheric Validation Data Center (EVDC) has been updated, introducing new tools and upgrading existing functionalities for the exploitation of users interested in accessing both Cal/Val data and satellite products for specific missions.

The Assessment of Standard Operating Procedures for OzoneSondes (ASOPOS) 2.0 Panel held a remote meeting from 18–20 March 2020. ASOPOS is compiling results from laboratory, field, and pressure chamber experiments to communicate the latest knowledge and best practices for the operation of electrochemical concentration cell (ECC) ozonesondes, a key component of the NDACC network.