T4 is a basic mast where ground surface temperature and air temperature (2 meter above ground) are measured. The mast was installed in August 2014. It is located at sea level on the eastern side of the Røde Elv River delta. The ground surface is covered by sand. Time stamp refer to West Greenland Time (UTC-3). There is a large gap in data from 2015-12-30 to 2017-07-06 due to cables being cut by rodents. Similar masts are found at other altitudes covering a gradient from 0 to 830 masl (T2-temperature_830m, T1-temperature_125m, T1-Temperature_125m) Meteorology:Meteorology GeoBasis Disko:The GeoBasis monitoring programme focuses on selected abiotic characteristics in order to describe the state of Greenlandic terrestrial environments and their potential feedback effects in a changing climate. Monitored plot data is up-scaled to a landscape level and is used to improve ecosystem models to be able to quantify these feedback mechanisms. The GeoBasis programme provides an active response to recommendations in international assessments such as ACIA and SWIPA; and is continuously being adapted based on AMAP and other international founded recommendations. Furthermore, the GeoBasis programme is directly involved in several international networks and research projects (e.g. the Circumpolar Active Layer Monitoring (CALM) programme, the Nordic Centre of Excellence DEFROST, the Danish Centre of Excellence CENPERM, the EU-projects PAGE21 and INTERACT, and the Arctic Research Centre at Aarhus University). The GeoBasis programme is divided into a number of sub-groups, including:
