Responses of surface and satellite observed tropospheric NO2 to emission perturbations due to COVID-19 in China
编号：449
稿件编号：1832 访问权限：仅限参会人
更新：2021-06-11 11:30:08 浏览：487次
张贴报告
摘要
Lockdowns were performed worldwide to contain 2019 novel coronavirus (COVID-19) spreads, while the control strategies demonstrated dramatic regional discrepancies. Using space-based Ozone Monitoring Instrument (OMI) nitrogen dioxide (NO2) and Chinese situ NO2 measurements, here we monitor COVID-19 to evaluate the different measurements. We find significant reductions of tropospheric NO2 columns due to COVID-19 controls by more than 40%. The perturbations in tropospheric NO2 diminished accompanied with the mitigation of COVID-19 pandemic, and finally disappeared within around 50-70 days after the starts of control measures, providing indications for the start, maximum, and relaxation of intensive controls.
关键字
situ-satellite COVID-19 NO2
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