Satellite-based estimates of decline and rebound in China's CO2 emissions during COVID-19 pandemic.
Sci Adv
; 6(49)2020 12.
Article
in English
| MEDLINE | ID: covidwho-983587
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 and April 2020, China's CO2 emissions fell by 11.5% compared to the same period in 2019, but emissions have since rebounded to pre-pandemic levels before the coronavirus outbreak at the beginning of January 2020 owing to the fast economic recovery in provinces where industrial activity is concentrated.
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Carbon Dioxide
/
Satellite Communications
/
Pandemics
/
COVID-19
Type of study:
Observational study
/
Prognostic study
Country/Region as subject:
Asia
Language:
English
Year:
2020
Document Type:
Article
Affiliation country:
Sciadv.abd4998
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