Greenhouse Gases

Greenhouse gases help to keep our planet warm, but with too much the planet's temperature would increase, and by contrast the temperature would plummet without these gases. Satellites can help to measure the accumulations of gas in the atmosphere and determine future trends.

The OLCI instrument on-board Copernicus Sentinel-3 supports atmospheric monitoring of the constituents of Greenhouse gases, changes in the ozone layer, and monitor potentially harmful aerosols. More information on the OLCI support to these applications can be found in the User Guide.

The TROPOMI instrument aboard Sentinel-5P routinely monitors atmospheric constituents including greenhouse gases (CH4, H2O etc.). Learn more about TROPOMI's applications.

Thematic Results

Each year, about a quarter of the carbon dioxide we release into the atmosphere ends up in the ocean, but how it happens is still not fully understood. The Sentinel-3A satellite is poised to play an important role in shedding new light on this exchange.

As part of the preparations for the Sentinel-5 Precursor air-quality monitoring mission, scientists teamed up in Romania recently to test different airborne systems that will be used to ensure this new satellite delivers accurate measurements of pollutants in the air we breathe.

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.

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.

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