Details

Autor(en) / Beteiligte

• Ziemke, Jerry R
• Kramarova, Natalya A
• Frith, Stacey M
• Huang, Liang-Kang
• Haffner, David P
• Wargan, Krzysztof
• Lamsal, Lok N
• Labow, Gordon J
• McPeters, Richard D
• Bhartia, Pawan K

Titel

NASA Satellite Measurements Show Global-scale Reductions in Free Tropospheric Ozone in 2020 and Again in 2021 During COVID-19

Ist Teil von

• Geophysical research letters, 2022-08, Vol.49 (15), p.e2022GL098712-n/a

Ort / Verlag

Goddard Space Flight Center: Wiley

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• NASA satellite measurements show that ozone reductions throughout the Northern Hemisphere (NH) free troposphere reported for spring-summer 2020 during the Corona VIrus Disease 2019 (COVID-19) pandemic have occurred again in spring-summer 2021. The satellite measurements show that tropospheric column ozone (TCO) (mostly representative of the free troposphere) for 20oN-60oN during spring-summer for both 2020 and 2021 averaged ~3 Dobson Units (DU) (or ~7-8%) below normal. These ozone reductions in 2020 and 2021 were the lowest in the 2005- 2021 record. We also include satellite measurements of tropospheric NO2that exhibit reductions of ~10-20% in the NH in early spring-to-summer 2020 and 2021, suggesting that reduced pollution was the main cause for the low anomalies in NH TCO in 2020 and 2021. Reductions of TCO ~2DU (7 %) are also measured in the Southern Hemisphere in austral summer but are 26not associated with reduced NO2.