Winter CO2 emissions at an Arctic tundra site under bias-corrected NA-CORDEX RCP4.5 and RCP8.5 conditions ...

• Main Authors: Wake, Leanne, Rutherford, Jonathan, Rutter, Nick, Cannon, Alex, Qu, Bo, Dutch, Victoria, Mann, Paul, Derksen, Chris, Walker, Branden, Gosselin, Gabriel Hould, Sonnentag, Oliver, Roy, Alex, Voigt, Carolina, Marsh, Philip, Boike, Julia
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Arctic; Inuvik; Valley Creek; Trail Valley Creek; permafrost; Tundra
• Online Access: https://dx.doi.org/10.57757/iugg23-2481; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018271

<!--!introduction!--> Arctic permafrost soils are estimated to contain 1700 Gt of carbon and a warming climate signals more rapid release of CO 2 from these environments, further exacerbating the warming effect of greenhouse gases. CO 2 emissions from Arctic soils during the cold season were previously thought to be negligible; this is not the case and their contribution to the overall annual carbon budget is expected to increase in a warming world. Few observational and modelling studies have been directed at Arctic cold season carbon cycling processes, ultimately making any future projections of CO 2 release unreliable. This unreliability is compounded by uncertainty in (1) the land component of Earth System Models regarding the parameterizations of biogeophysical and biogeochemical processes driving CO 2 release during winter and (2) projections of future climate in the Arctic. Here, we use the CLM5.0 model in point mode for Trail Valley Creek near Inuvik NT, forced by ERA5 reanalysis to evaluate ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...