An Assessment of the Carbon Balance of Arctic Tundra: Comparisons among Observations, Models, and Atmospheric inversions A. David McGuire and Co-authors U. Alaska Fairbanks and U.S. Geological Survey AGU Fall 2011 Meeting, GC41F-01 8 December 2011. Lead Authors:
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An Assessment of the Carbon Balance of Arctic Tundra:Comparisons among Observations, Models, and Atmospheric inversionsA. David McGuire and Co-authorsU. Alaska Fairbanks and U.S. Geological SurveyAGU Fall 2011 Meeting, GC41F-018 December 2011
A.D. McGuire – University of Alaska Fairbanks, USA
T. R. Christensen – Lund University, Sweden
Is the CO2sink of N. High Latitudes Changing?
From Hayes et al. (2011, Global Biogeochemical Cycles)
Mean annual C fluxes and change in stocks (Tg C yr-1) for the terrestrial component of the Arctic Basin, 1997 - 2006
From McGuire et al. (2010, Tellus)
as defined by the Regional Carbon Cycle Assessment
and Processes (RECCAP) Synthesis Activity
Mean NEE of Arctic Tundra Simulated by Process Models
Interannual Anomalies of Carbon Fluxes
Mean NEE of Arctic Tundra Estimated by Inversion Models
Mean Seasonal Cycle of Carbon Fluxes of Inversions
All of the models indicate that July is the month of maximum NEE.
Interannual Variability of Carbon Fluxes from Inversions
Changes in the Seasonal Cycle of NEP
Estimated by the Regional Process Models