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Standardised Greenhouse Gas Measurements Throughout Europe

ICOS, Integrated Carbon Observation System, produces high quality, standardised and open data from 180 measurement stations across 16 European countries. ICOS stations measure greenhouse gas exchanges between the atmosphere, land surface and oceans and their concentration in the air.

Explore our data Explore ICOS measurements

Latest news

Some new colleagues have joined ICOS Carbon Portal since late 2024. The Carbon Portal, hosted by Lund University in Sweden and Wageningen University in the Netherlands, is home to all ICOS data…

ICOS Station Network

ICOS stations are coordinated and run by the ICOS National Networks in 16 member countries. Stations in the National Networks operate in three distinct domains: Atmosphere, Ecosystem and Ocean.

View station list and map

Browse ICOS Countries

ICOS Curve

The ICOS Curve, an interactive web service, shows the dynamics and trends in CO2 levels in the atmosphere above Europe. It allows for comparing CO2 levels from different ICOS Atmosphere stations with European and global averages.

Learn more about ICOS Curve

Upcoming events

All events

ICOS Talks: Reconciling the carbon balance of managed boreal forests using integrated bottom-up and top-down approaches

April 1st 2026 Learn more

ICOS at EGU26

May 3rd 2026 to May 8th 2026 Learn more

Highlights

ICOS Science Conference 2026

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NUBICOS project

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ICOS Talks are back

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ICOS Cities project

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ICOS Carbon Portal

ICOS Carbon Portal offers free access to high-quality and standardised greenhouse gas data, as well as to scientific and educational products and services. The Carbon Portal is a ‘one-stop shop’ for all ICOS data products.

Carbon Portal manages data security, enforcement of the ICOS data policy, with user-friendly (and machine-friendly) internet- and other computer-network based interfaces. It organises long-term archiving of ICOS data products to guarantee their safe storage, future access and easy re-use.

Access ICOS data ICOS Data Collection Process