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. Dark sand covers the ground surface. Time stamp refer to (UTC-3. There is a large gap in data from 30 December 2015 to 6 July 2017 due to cables cut by rodents. Similar masts are found at other altitudes covering a gradient from 0 to 830 m above sea level (T2-temperature_830m, T1-temperature_125m, T1-Temperature_125m).
