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UCL Home  /  Geography  /  News & Events  /  News  /  News Archive  /  October 2012  /  Return to Greenland

Return to Greenland

ECRC field trip to check pollution evidence

Return to Greenland

In early September Drs Viv Jones, Simon Turner and Simon Patrick undertook a two week trip to the Søndre Stromfjord region of Western Greenland. The NERC-funded project aims to test the hypothesis that nitrogen deposition is driving ecological change in this part of the Arctic.

The main aim of this phase of the ECRC work was to sample and redeploy deposition collectors along a 160 km transect from the coast at Sisimiut to the ice-sheet east of Kangerlussuaq.

The collectors containing ion exchange resin have now been in the field for 2 years and appear to be working well with only a few contamination problems. The resins will be analysed to determine the total amount and isotopic composition of dissolved nitrogen species (nitrate [NO3-] and ammonium [NH4+]). There are remarkably few measurements of nitrogen deposition in the Arctic and these will contribute to knowledge of long-range atmospheric pollution transport to the region. The team also emptied sediment traps situated on the lakes and took rainfall samples.


Image

Simon Turner and Viv Jones sampling a lake (AT7) near Sisimiut, Greenland


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