CO2 exchange across Northern Eurasia
نویسندگان
چکیده
Assessment of model estimates of land–atmosphere CO2 exchange across Northern Eurasia M. A. Rawlins, A. D. McGuire, J. K. Kimball, P. Dass, D. Lawrence, E. Burke, X. Chen, C. Delire, C. Koven, A. MacDougall, S. Peng, A. Rinke, K. Saito, W. Zhang, R. Alkama, T. J. Bohn, P. Ciais, B. Decharme, I. Gouttevin, T. Hajima, D. Ji, G. Krinner, D. P. Lettenmaier, P. Miller, J. C. Moore, B. Smith, and T. Sueyoshi Climate System Research Center, Department of Geosciences, University of Massachusetts, Amherst, MA, USA U.S. Geological Survey, Alaska Cooperative Fish and Wildlife Research Unit, University of Alaska, Fairbanks, Alaska, USA FLBS/NTSG, Univ. of Montana, Missoula, MT, USA National Center for Atmospheric Research, Boulder, CO, USA Met Office Hadley Centre, FitzRoy Road, Exeter, EX1 3PB, UK Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, USA CRNM-GAME, Unité mixte de recherche CNRS/Meteo-France (UMR 3589), 42 av Coriolis, 31057 Toulouse CEDEX, France
منابع مشابه
Assessment of model estimates of land-atmosphere CO2 exchange across Northern Eurasia
A warming climate is altering land-atmosphere exchanges of carbon, with a potential for increased vegetation productivity as well as the mobilization of permafrost soil carbon stores. Here we investigate land-atmosphere carbon dioxide (CO2) cycling through analysis of net ecosystem productivity (NEP) and its component fluxes of gross primary productivity (GPP) and ecosystem respiration (ER) and...
متن کاملThe Effects of Land Cover and Land Use Change on the Contemporary Carbon Balance of the Arctic and Boreal Terrestrial Ecosystems of Northern Eurasia
Recent changes in climate, disturbance regimes and land use and management systems in Northern Eurasia have the potential to disrupt the terrestrial sink of atmospheric CO2 in a way that accelerates global climate change. To determine the recent trends in the carbon balance of the arctic and boreal ecosystems of this region, we performed a retrospective analysis of terrestrial carbon dynamics a...
متن کاملNew constraints on Northern Hemisphere growing season net flux
[1] Observations of the column-averaged dry molar mixing ratio of CO2 above both Park Falls, Wisconsin and Kitt Peak, Arizona, together with partial columns derived from aircraft profiles over Eurasia and North America are used to estimate the seasonal integral of net ecosystem exchange (NEE) between the atmosphere and the terrestrial biosphere in the Northern Hemisphere. We find that NEE is 25...
متن کاملEnvironmental controls on the increasing GPP of terrestrial vegetation across northern Eurasia
Terrestrial ecosystems of northern Eurasia are demonstrating an increasing gross primary productivity (GPP), yet few studies have provided definitive attribution for the changes. While prior studies point to increasing temperatures as the principle environmental control, influences from moisture and other factors are less clear. We assess how changes in temperature, precipitation, cloudiness, a...
متن کاملAnnual carbon dioxide drawdown and the Northern Annular Mode
[1] Year-to-year variations in summer drawdown of Northern Hemisphere atmospheric carbon dioxide (CO2) are compared with corresponding year-to-year variations in sealevel pressure (SLP), surface air temperature, and the productivity of land vegetation as inferred from the satellite-derived normalized difference vegetation index (NDVI). Annual values of CO2 drawdown for the years 1980–2000 are e...
متن کامل