Carbon Gas Exchange in a Climate Sensitive Subarctic Landscape: Contribution of Lakes to Mire Complex Fluxes
Person photo Prof Patrick Crill
Department of Geological Sciences

Funding source: Swedish Research Council - Vetenskapsr├ądet (VR)
Period: 1/1/08 - 12/31/10
Funding: 2296000 SEK
Seasonally and permanently frozen peatlands and their associated ponds and lakes at high latitudes represent an important challenge in our understanding of atmosphere biosphere interactions and climate land surface feedbacks both mediated by low molecular weight carbon (C) gas exchange with a focus on methane (CH4) and carbon dioxide (CO2). Such environments represent a large area globally and will be among the most dramatically altered biomes due to global warming. In addition, there are extremely few data on carbon trace gas exchange from surface water in subarctic/arctic regions in general and from this area in particular. The proposed automated and manual field measurements of flux and climate are significant in that they will reveal the variability of CO2 and CH4 flux from land and water surfaces over short and longer time scales. The larger goal is to develop datasets sufficient to test models that can provide information over regional or global areas on time scales of climate change that will anticipate the long-term integrated ecosystem response to changing controls on CH4 flux. Our goal is to quantify the effects of physical and biological controls of the exchange of carbon trace gases in a dynamic mire and lake landscape that is changing due to regional warming. We want to develop a biogeochemical understanding that can be linked to the physics via addressing the flow of C from land to lakes to exchange with the atmosphere.
Research fields (1)
Geological Sciences