M5 was located in a wet fen area called 'Rylekæret', just 20 meters North of the Automatic Chamber site.
The station was in operation 2009 - 2017.
Soil temperatures in 2, 20, 30, 40 and 50 cm is recorded every 10 and 720th minute, using Campbell scientific T107 thermocouples.
Soil temperature is also measured in 2,8,12 and 16 cm, using East 30 Sensors, thermal conductivity sensors.
Every 12th hour these conductivity sensors emit a heat pulse and from this the volumetric heat capacity and thermal conductivity is computed. Volumetric heat capacity and thermal conductivity is only published for periods where the soil is thawed.
Due to a flood of the station in spring 2015, conductivity measurements from 2015 are missing.
2017: Due to technical problems, the M5 station was terminated in August.