Monitoring the essential climate variables (ECV). The two ECV required by the World Metereological Organization and by different international international panels like Global terrestrial Network - Permafrost (GTN-P) are the temperature of the ground at the depth of Zero Annual Amplitude (ZAA) that depends from the type of substrate and where the temperature is approximately stable during a year. This variable indicate the mean annual surface temperature and give an estimation of the total annual energy balance of the surface therefore is considered an important tool to monitor the Climate Change.

The temperature at the ZAA depth (ECV 1) are temperature data (°C) recorded at 25 m of depth daily and averaged yearly. The accuracy of the thermistors is 0.1°C and the data here presented is mean annual temperature at 25 m of depth.

Datasets are initially uploaded to the NADC ERDDAP instance with restricted access (authentication required). They will be made publicly available following publication of the associated paper. For further information, please contact the Principal Investigator (PI).

ISO 19139

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