Satellite-based estimates of decline and rebound in China's CO₂ emissions during COVID-19 pandemic.

ABSTRACT: Changes in CO₂ emissions during the COVID-19 pandemic have been estimated from indicators on activities like transportation and electricity generation. Here, we instead use satellite observations together with bottom-up information to track the daily dynamics of CO₂ emissions during the pandemic. Unlike activity data, our observation-based analysis deploys independent measurement of pollutant concentrations in the atmosphere to correct misrepresentation in the bottom-up data and can provide more detailed insights into spatially explicit changes. Specifically, we use TROPOMI observations of NO₂ to deduce 10-day moving averages of NO _x and CO₂ emissions over China, differentiating emissions by sector and province. Between January

SUBMITTER: Zheng B 

PROVIDER: S-EPMC7821878 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature