Author: Zander S Venter; Kristin Aunan; Sourangsu Chowdhury; Jos Lelieveld
Title: COVID-19 lockdowns cause global air pollution declines with implications for public health risk Document date: 2020_4_14
ID: 33cgz7ob_2
Snippet: for the effects of meteorological variability, we find remarkable declines in ground-level nitrogen 28 dioxide (NO2: -29 % with 95% confidence interval -44% to -13%), ozone (O3: -11%; -20% to -2%) 29 and fine particulate matter (PM2.5: -9%; -28% to 10%) during the first two weeks of lockdown (n = 30 27 countries). These results are largely mirrored by satellite measures of the troposphere 31 although long-distance transport of PM2.5 resulted in m.....
Document: for the effects of meteorological variability, we find remarkable declines in ground-level nitrogen 28 dioxide (NO2: -29 % with 95% confidence interval -44% to -13%), ozone (O3: -11%; -20% to -2%) 29 and fine particulate matter (PM2.5: -9%; -28% to 10%) during the first two weeks of lockdown (n = 30 27 countries). These results are largely mirrored by satellite measures of the troposphere 31 although long-distance transport of PM2.5 resulted in more heterogeneous changes relative to 32 NO2. Pollutant anomalies were related to short-term health outcomes using empirical exposure-33 response functions. We estimate that there was a net total of 7400 (340 to 14600) premature 34 deaths and 6600 (4900 to 7900) pediatric asthma cases avoided during two weeks post-35
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