European Space Agency images show 40% reduction in Nitrogen Dioxide over China


Claus Zehner, ESA’s Copernicus Sentinel-5P mission manager, comments, “We can certainly attribute a part of the nitrogen dioxide concentration reduction to the impact of the coronavirus. We currently see around a 40% reduction over Chinese cities, however these are just rough estimates, as weather also has an impact on emissions.

“We are conducting a detailed scientific analysis which will soon provide more insights and quantified results in the following weeks and months.”

The Copernicus Sentinel-5 Precursor mission, also known as Sentinel-5P, is dedicated to monitoring air pollution by measuring a multitude of trace gases as well as aerosols – all of which affect the air we breathe.

https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-5P/COVID-19_nitrogen_dioxide_over_China