ateam - Potsdam Institute for Climate Impact Research

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ATEAM final report Section 5 and 6 (2001-2004) 116 summer runoff [mm] 600 500 400 300 800 700 600 500 200 400 1000 Alptal Hirschbichl Dischma 100 300 900 1 2 3 4 1 2 3 4 1 2 3 4 800 700 600 500 400 300 Saltina: 1 2 3 4 1000 900 800 700 600 500 Verzasca: 1 2 3 4 Time slices 1400 1300 1200 1100 Time slices 1: 1960 – 1990 2: 1990 – 2020 3: 2020 – 2050 4: 2050 - 2080 Figure 27. Summer river discharge (May to October) averaged over the three decades of the four time slices of ATEAM. The thick line gives the average summer river discharge of the seven different scenarios. The yellow area shows the maximum and minimum of the seven scenarios. 200 Alptal 200 Hirschbichl Discharge [mm] 100 0 1 2 3 4 5 6 7 8 9 10 11 12 month 100 0 1 2 3 4 5 6 7 8 9 10 11 12 month current future Figure 28. Stream flow regimes for the Alptal and the Hirschbichl catchment under current conditions and under future conditions (time slice 2050 – 2080, A2 HadCM3). elevation [m] 2000 1600 1200 1970 2000 2030 2060 year 2000 1600 1200 1970 2000 2030 2060 year A1FI A2 B1 B2 A2 CGCM2 A2 CSIRO2 A2 PCM2 Figure 29. Elevation of snow line (elevation above which the snow cover is reliable) as projected for seven future climate scenarios. The left chart shows the Alptal catchment, the right chart shows the Verzacsa-Lavertezzo catchment.
ATEAM final report Section 5 and 6 (2001-2004) 117 1961 - 1990 1991 - 2020 2021 - 2050 2051 - 2080 -20 -10 0 10 20 Figure 30. Changes in vegetation carbon storage (kg C m -2 ) for the Saltina catchment at the four time slices of ATEAM for the A1f HadCM3 scenario. Dark green colours show a change in land use from grass to forest, dark red colours show areas where forests were converted into grassland. changes in vegetation carbon [gC m -2 ] 750 500 250 0 -250 -500 -750 750 500 250 0 -250 -500 -750 1 2 3 4 750 500 250 0 -250 -500 Alptal Hirschbichl Dischma Saltina: 1 2 3 4 -750 750 500 250 0 -250 -500 -750 1 2 3 4 Verzasca: 1 2 3 4 Time slices 750 500 250 0 -250 -500 -750 1 2 3 4 Time slices 1: 1960 – 1990 2: 1990 – 2020 3: 2020 – 2050 4: 2050 - 2080 Figure 31. Changes in vegetation carbon storage (g C m -2 ) in five mountain catchments (averages over the entire catchment) for the four time slices of ATEAM. The thick line gives the average vegetation carbon storage of the seven different scenarios. The blue area shows the maximum and minimum of the seven scenarios.
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ateam - Potsdam Institute for Climate Impact Research

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