Ground based in situ observations of aws at Birkenes (NO0001R). These measurements are gathered as a part of the following projects EMEP, NILU and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: precipitation_amount in met (lwe_thickness_of_precipitation_amount), pressure in met (air_pressure), relative_humidity in met (relative_humidity), temperature in met (air_temperature), wind_direction in met (wind_from_direction), wind_speed in met (wind_speed)