GeoBasis Nuuk - Hydrology - River Water Chemistry

River chemistry is measured at the river outlet close to where it runs into the fiord (Kobbefjord). Measurements in the river have been done since 2009 with a frequency of 2-3 times per week. Over the monitoring period the time of sampling has varied though since 2015 sampling has been measured more consistent around 8:00 (UTC-3 WGWT). Water temperature and conductivity is measured in situ in the stream. A water sample is collected for pH analysis in the afternoon. A two-point pH calibration with pH 4 and pH 7 standards is performed before every pH measurement. Hydrology:Hydrology 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: