NDACC News

November
2020

The NDACC Steering Committee held its annual meeting dispite the COVID-19 restrictions November 4-6, 2020.  Condensing the topics into 3 short days, attendees were able to discuss a wide variety of topics including station and data submission status, implementation of DOIs, changes to the NDACC Data Protocol, the addition of Data Versioning options, new relationships with the ECMWF  Climate Data Store and the PGN Cooperating Network.  Attendees are hopeful for a return to an in person meeting in Fall 2021.

November
2020

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. We analyzed HNO3 and HCl columns from 9 NDACC FTIR sites spanning 77oS to 79oN and detected changes in the extratropical stratospheric transport circulation from 1994 to 2018.

August
2020

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

August
2020

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.

June
2020

logo_lotus__white_background__100px.pngThe 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.

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