NWO-I

Institutes Organisation of NWO

Instrument Sentinel-5 monitors methane

In August 2025, the European Sentinel-5 space instrument was launched as supplement to TROPOMI. SRON supplies the recessed grids for both and developed the software to extract useful data from the observations. 

Afbeelding
Artist’s impression of ESA’s MetOp-SG-A1 satellite, carrying the partly Dutch-built Sentinel-5 instrument. Credits ESA

Since 2017, the Dutch TROPOMI instrument has been mapping the entire atmosphere every day for substances including methane, which is responsible for a third of global warming. As a result, SRON detects methane leaks every week, some of which have a climate impact comparable to that of all road traffic in the Netherlands. 

With the addition of newer versions over a period of seven and fourteen years, Sentinel-5 provides the world with a long-term perspective on methane monitoring. 

Sentinel-5 orbits in a polar orbit where it is always 9.30 am on the day side, complementing TROPOMI’s 1.00 pm orbit. That provides the opportunity to take a second reading every day, with another chance of a cloudless moment. It also offers a unique insight into the activities that take place in the morning. 

Afbeelding
SRON builiding in Leiden
SRON builing in Leiden. Credits Ivar Pel

More information

Would you like to find out more about SRON's research?

Take a look at the SRON institute page

Visit the SRON website