GeoBasis Nuuk - Fluxmonitoring - EddyHeath

The EddyHeath station measures carbon dioxide fluxes via eddy covariance method at a dry heath site (26 m.a.s.l.) close to the InteractHeath (Meteorology, Soil Properties, Snow Properties; 2011-) and the former station SPA (Snow Properties; 2013-2020). The station was established in 2012 and originally instrumented with a LI7200 CO2/H2O closed-path gas analyzer (2012-2024) and Gill HS-50 sonic anemometer (2012-). In 2024 the station was upgraded with a LI7200RS CO2/H2O closed-path gas analyzer and a SmartFlux2 processing system (2024-). This dataset contains quality-controlled fluxes of CO2, LE and H; CO2- and H2O concentrations; friction velocity; wind speed and -direction. The station logs at a frequency of 10 Hz and data are aggregated as 30-minute averages (UTC-3 West Greenlandic Winter Time). From 2012 to 2023, data were collected only during the summer field season (approximately May–October) due to winter power limitations. Since 2024, continuous year-round data collection has been enabled, though occasional data gaps remain in the dark months from November to February. Fluxmonitoring:Fluxmonitoring GeoBasis Nuuk: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: