Nitrogen dioxide decline and rebound observed by GOME-2 and TROPOMI during COVID-19 pandemic
Abstract
Since its first confirmed case in December 2019, coronavirus disease 2019 (COVID-19) has become a worldwide pandemic with more than 16 million confirmed cases by July 2020. Countries and territories around the world have enforced lockdown measures to prevent the spread of the virus, introducing a temporal change of air pollutants strongly related to transportation, industry, and energy, such as nitrogen dioxide (NO2).
In this contribution, the NO2 variation over regions with strong social responses to COVID-19 is analyzed using the global long-term datasets from Global Ozone Monitoring Experiment-2 (GOME-2) sensor onboard the EUMETSAT Metop satellites and the high-resolution measurements from TROPOspheric Monitoring Instrument (TROPOMI) onboard the EU/ESA Sentinel-5 Precursor satellite. We briefly present the NO2 retrieval algorithm for GOME-2 and TROPOMI developed at German Aerospace Center (DLR). We introduce the temporal and meteorological correction methods that statistically take into account the potential influences of long-term trend and short-term wind-driven transport, respectively. We present the decline and rebound of NO2 concentration during and after the COVOD-19 lockdown for regions dominated by anthropogenic emissions in Asia, Europe, North and South America.- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMA098...07L
- Keywords:
-
- 0305 Aerosols and particles;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 0365 Troposphere: composition and chemistry;
- ATMOSPHERIC COMPOSITION AND STRUCTURE;
- 3360 Remote sensing;
- ATMOSPHERIC PROCESSES