From mid August to the beginning of October a chamber calibration campaign is organised in Finland. This campaign and a concluding workshop are co-funded by NinE. Groups from around Europe are invited to participate in this campaign. The purpose of the campaign is to test different types of static chambers for N₂O, CH₄ and CO₂ fluxes. This will be done under controlled conditions using a constant flux calibration tank. For the comparison, then chambers with different dimensions, material and sampling protocols will be selected and tested.

The aims of the measurement campaign are:

• to improve measurement quality in gas fluxes of N₂O, CH₄ and CO₂ from soils
• to provide guidelines for chamber designs and sampling procedures
• to share knowledge on chamber measurement techniques between flux measurement communities

More information and instructions how to register to the campaign can be found at:
http://www.mv.helsinki.fi/home/pihlatie/chamber_calibration.html