Natural emissions of volatile organohalogens in Arctic and Subarctic terrestrial systems – University of Copenhagen

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Natural emissions of volatile organohalogens in Arctic and
Subarctic terrestrial systems

A study of the Arctic’s role in the atmospheric organohalogen budget

Morning in Abisko, Sweden.

During the summer of 2012, emission and consumption of volatile organohalogens from soil were investigated in Kangerlussuaq, western Greenland (66°58’ N; 50°28’ W), Narsarsuaq, southern Greenland (61°09’ N; 45°23’ W), and Abisko, northern Sweden (68°22’ N, 18°44’ E). These three locations are representative of Arctic and Subarctic environments.

Aims of the project

While the high impact of volatile organohalogens on atmospheric chemistry is generally recognized, key uncertainties still remain concerning the emission and distribution of the natural fraction of these compounds, especially regarding the fate and emissions from arctic and subarctic landmasses.

Christian working at the Abisko heliport.

This project will address these uncertainties by investigating the natural production and consumption of volatile organohalogens in arctic and subarctic landscapes. Estimates of net emission factors and the general fate of volatile organohalogens will be assessed through field measurements and laboratory studies, combined with simple model simulations. The emission factors will be evaluated according to the IPCC global warming scenarios. 

The specific aims of the proposed project are two-fold:

Working in Abisko, Sweden.

1) To give estimates of the net emission of naturally produced volatile organohalogens in Arctic and Subarctic landscapes;

2) To clarify the biological pathways and the environmental factors involved in the formation and degradation of organohalogens in arctic and subarctic landscapes.

Lasse placing an anti-mouse device on the climate station. Narsarsuaq, South Greenland.

Lasse sampling in Blomsterdalen. Narsarsuaq, South Greenland.

Anders digging out a soil profile. Narsarsuaq, South Greenland.

 

Ole Stig on the Signalhøjen. Narsarsuaq, South Greenland.

 

Waiting for the boat at Brathalid. South Greenland.

 

Ole Stig on ice. Kangerlussuaq.

 

'I am sorry - I didn't shoot it down'. Sandflugtsdalen, Kangerlussuaq.

 

Lovely night in Narsarsuaq.