Shanghai under lockdown since 01 April 2022, China

Sentinel-1 CSAR IW acquired on 09 March 2022 from 09:54:59 to 09:55:00 UTC
Sentinel-5P TROPOMI NO2 acquired on 01 April 2022 at 04:52:18 UTC
Sentinel-1 CSAR IW acquired on 14 April 2022 at 09:55:00 UTC
Sentinel-5P TROPOMI NO2 acquired on 11 May 2022 from 04:31:20 to 06:16:20 UTC
Author(s): Sentinel Vision team, VisioTerra, France -
Keyword(s): Pollution, atmosphere, marine traffic, infrastructure, health, China
Fig. 1 - S5P TROPOMI (11.04.2022-11.05.2022) - Due to a rise in COVID-19 cases, Shanghai is under total lockdown since 1st April 2022.
The average NO2 concentration has been computed above Shanghai during one month of total lockdown in the city (11 April to 11 May 2022). Its shows lower values above Shanghai compared to other, smaller, Chinese megalopolis. This lower urban pollution can be attributed to a lockdown-related reduction of NO2 emissions.
Fig. 2 - S1 (09.03.2022) - View of Shanghai before the lockdown, its port area was busy and many ships were visible outside the port.
Fig. 3 - S1 (14.04.2022) - One month later, more ships are queuing & waiting offshore due to the additional procedures & isolated workers.