A conversation with Bert Heusinkveld
Principle investigator of Veenkampen
The Veenkampen is home to one of the longest meteorological records worldwide

The Veenkampen site is located in the ‘Binnenveld’ area between Wageningen and Veenendaal. It’s grass on clay and peat is typical for the area. Its surroundings were converted from farmland into a wetland habitat since 2020. The Veenkampen site is a continuation of the former ‘Haarweg’ and ‘Duivendaal’ sites, which were reallocated because of city expansion. Together they are home to the world’s longest record of global radiation and others.

The Veenkampen site is both an operational and experimental site. The focus is on how CO2 and water exchange change with climate and particularly in extremes (droughts, heat waves). With respect to air quality, the site is a background location, without close traffic and industrial sources.

The site is operated by MAQ at Wageningen University. It is regularly used by other partners too (e.g. other WUR groups, RIVM).

Operationally, we measure meteorology, evaporation, CO2 exchange, soil variables and black carbon concentrations. Experimentally, we measure air quality concentrations and fluxes of NOx and NH3. The site is used for shorter experiments too.


The Veenkampen site and its data is operational and available from June 2011 onwards. Note that this may vary for specific data streams. Data from the original Haarweg station (1974 – 2012) is not available in the database and is available upon request via

“The Veenkampen site hosts the worlds longest record of global radiation measurements.”


“The location of the site was moved twice, to prevent turning into an urban site, due to the Wageningen city expansion.”


“It is now located in the ‘Binnenveld’, a wide, open area home to unique nature and bird life.”