The impact of permafrost thaw on ecosystem carbon balance: winter ecosystem respiration measurements using soda lime at CiPEHR, EML. 2010-2013

The Carbon in Permafrost Experimental Heating Research (CiPEHR) project addresses the following questions: 1) Does ecosystem warming cause a net release of C from the ecosystem to the atmosphere?, 2) Does the decomposition of old C, that comprises the bulk of the soil C pool, influence ecosystem C loss?, and 3) How do winter and summer warming alone, and in combination, affect ecosystem C exchange? We are answering these questions using a combination of field and laboratory experiments to measure ecosystem carbon balance and radiocarbon isotope ratios at a warming experiment located in an upland tundra field site near Healy, Alaska in the foothills of the Alaska Range. This dataset contains point measurements of cumulative winter ecosystem respiration at CiPEHR during the winters of 2010-2011; 2011-2012; and 2012-2013.