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. Those changes are detailed below. We welcome the newest members of the Steering Committee; we congratulate the recently re-elected members, and we thank the departing members for their years of service and contributions to NDACC!
Co-Chairs
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. All files can be downloaded via anonymous ftp from ftp://ftp.cpc.ncep.noaa.gov/ndacc/gmi_model_data.
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, including evaluations of sonde intercomparisons in the Juelich Ozonesonde Intercomparison Experiment (JOSIE) series. 
The report documents include the WMO/GAW Report 201 on ozonesonde standard procedures (Smit
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. Details can be found at http://qos2021.yonsei.ac.kr/