ateam - Potsdam Institute for Climate Impact Research

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ATEAM final report Section 5 and 6 (2001-2004) 108 NBE [PgC yr -1 ] 0.08 0.06 0.04 0.02 0 -0.02 -0.04 -0.06 -0.08 -0.1 1900 1925 1950 1975 2000 2025 2050 2075 A HadCM3 CSIRO2 pre-industrial natural variability CGCM2 PCM2 B Figure 18. Variations in estimates of net biome exchange (NBE) over climate scenarios derived from four different climate models using the same emission scenarios (A2). A. Projections of total net biome exchange of the terrestrial biosphere over time in ATEAM-Europe, 1900-2100. Negative values denote fluxes into the terrestrial system, positive values denote fluxes out of the terrestrial system into the atmosphere. B. Changes in net biome exchange. Mean (left map) and standard deviation (right map) over four scenarios (A2 with four climate models) in ATEAM-Europe, 2071-2100 compared to 1971- 2000. Negative values (green) indicates that flux of carbon to the terrestrial system in a grid cell is greater in 2071-2100 than in 1971-2000, positive values (red) indicate that this flux has decreased. NBE due to landuse change [PgC yr -1 ] NBE due to landuse change 0.06 0.05 0.04 0.03 0.02 0.01 0 -0.01 -0.02 -0.03 -0.04 -0.05 1900 1925 1950 1975 2000 2025 2050 2075 A1f A2 B1 B2 Figure 19. Total net biome exchange (NBE) of the terrestrial biosphere over time in ATEAM-Europe, accounting <strong>for</strong> land use change only. The estimates result from model runs driven by climate and land
ATEAM final report Section 5 and 6 (2001-2004) 109 use change, minus model runs driven by climate change only. Scenarios are based on HadCM3 runs <strong>for</strong> all four emission scenarios (A1f, A2, B1, B2). Negative values denote fluxes into the terrestrial system, positive values denote fluxes out of the terrestrial system into the atmosphere. A
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ateam - Potsdam Institute for Climate Impact Research

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