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– The Permafrost Carbon Network is a CliC sponsored activity

 

71 abstracts was received for the AGU session about the Vulnerability of Permafrost Carbon to Climate Change and PCN were allocated three oral time slots and one poster session. The high number of abstract submissions is very satisfactory and they are looking forward to great sessions at AGU.

The first round of funding for the Permafrost Carbon Network is ending and they have finished an exciting number of synthesis activities. The Permafrost Carbon Network will be continued and is part of the permafrost action team within SEARCH (http://www.arcus.org/search-program). They will provide more details on structural changes and additional angles to the network at their annual meeting on Sunday prior to AGU.

 

Some recent publications:

Aiken GR, Spencer RGM, Striegl RG, Schuster PF, Raymond PA (2014) Influences of glacier melt and permafrost thaw on the age of dissolved organic carbon in the Yukon River basin. Global Biogeochemical Cycles, 28, 2013GB004764.

Deng J, Li C, Frolking S, Zhang Y, Bäckstrand K, Crill P (2014) Assessing effects of permafrost thaw on C fluxes based on multiyear modeling across a permafrost thaw gradient at Stordalen, Sweden. Biogeosciences, 11, 4753-4770.

Olefeldt D, Roulet NT (2014) Permafrost conditions in peatlands regulate magnitude, timing, and chemical composition of catchment dissolved organic carbon export. Global Change Biology, 20, 3122-3136.

Li J, Luo Y, Natali S, Schuur EAG, Xia J, Kowalczyk E, Wang Y (2014) Modeling permafrost thaw and ecosystem carbon cycle under annual and seasonal warming at an Arctic tundra site in Alaska. Journal of Geophysical Research: Biogeosciences, 119, 2013JG002569.

Lupascu M, Welker JM, Xu X, Czimczik CI (2014) Rates and radiocarbon content of summer ecosystem respiration in response to long-term deeper snow in the High Arctic of NW Greenland. Journal of Geophysical Research: Biogeosciences, 119, 2013JG002494.

Walter Anthony KM, Zimov SA, Grosse G et al. (2014b) A shift of thermokarst lakes from carbon sources to sinks during the Holocene epoch. Nature, 511, 452-456. 10.1038/nature13560