The impact of permafrost thaw on ecosystem carbon balance: hourly meteorological data from Eight Mile Lake watershed, 2004-2009

• Other Authors: EdwardSchuur
• Format: Dataset
• Language: unknown
• Published: Bonanza Creek LTERBoreal Ecology Cooperative Research Unit University of Alaska FairbanksP.O. Box 756780 FairbanksAK99775USA907-474-6364907-474-6251 2010
• Subjects: air temperature; PAR; rain; relative humidity; wind speed; wind direction; barometric pressure; Arctic; alaska range; permafrost; Thermokarst; Tundra; Alaska
• Online Access: http://hdl.handle.net/10255/dryad.16322; http://metacat.lternet.edu/knb/metacat/knb-lter-bnz.453.3/xml

In this larger study, we are asking the question: Is old carbon that comprises the bulk of the soil organic matter pool released in response to thawing of permafrost? We are answering this question by using a combination of field and laboratory experiments to measure radiocarbon isotope ratios in soil organic matter, soil respiration, and dissolved organic carbon, in tundra ecosystems. The objective of these proposed measurements is to develop a mechanistic understanding of the SOM sources contributing to C losses following permafrost thawing. We are making these measurements at an established tundra field site near Healy, Alaska in the foothills of the Alaska Range. Field measurements center on a natural permafrost thaw gradient and an experimental warming site. As such, this area is unique for addressing questions at the time and spatial scales relevant for change in arctic ecosystems. This data set includes hourly mean values of PAR, relative humidity, air temperature, barometric pressure, wind speed and direction, and hourly summed precipitation.