Reactive Gases

In terms of atmospheric monitoring, highly reactive gases are those which, when exposed to sufficient quantities of heat and light, chemically react and absorb or deplete the surrounding levels of ozone in the atmosphere. It is therefore important to observe the levels of these potential threatening gases.

The Copernicus Sentinel-5P mission is capable of measuring these gases (such as carbon dioxide) with its TROPOMI sensor. Dedicated Sentinel-5P products are available with measurements of some of these gases.

Thematic Results

With air pollution linked to millions of deaths around the world, it has never been more important to monitor the air we breathe. Today marks a significant step forward as a deal is secured to build a crucial space sensor for tracking the world's air quality.

A large volcanic OClO and BrO plume could be tracked from ENVISAT SCIAMACHY jointly with EOS Aura MLS and OMI observations for 5 days after the June 2011 eruption of Puyehue-Cordón Caulle (PCC).

Satellite measurements show that nitrogen dioxide in the lower atmosphere over parts of Europe and the US has fallen over the past decade. More than 15 years of atmospheric observations have revealed trends in air quality.

Smelling Grímsvötn

19 May 2011

While piloting a commercial transatlantic flight last year, Captain Klaus Sievers and his crew got a whiff of an unusual odour. In a confined space 10 km up in the air, there was only one thing it could be.

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