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IPILPS Workshop ANSTO 18-22 April 2005 ICHASM & ISOLSM by Dr. Matt Fischer
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ICHASM
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Tiles, Evaporation and...
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… modes How ICHASM
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RS modes
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Parameterisations Soil T: (0-5, 5-15, 15-50, 50-100 cm; 1-2 m) WR 150 mm, WG 40 mm, WC = 0.1*A veg *A leaf *A Tile, WN = inf.
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‘Time-invariant’ surface var’s. "/data3/mjf/FORCING/FORCING_EQY1_MUNICH_IPILPS1.txt” "/data3/mjf/CHASM/chasm_current/OUT_CHASM/MUNICH/” EQUIL 0. HEIGHT 20. Z0G 0.01 Z0N 0.00024 RCMIN 40. MMFVEG 999. 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9 MMLAI 999. 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 WRMAX 150. ALBV 0.15 ALBG 0.2 ALBN 0.75 Z0V 0.1 IYRS 20. IDAYS 365 TS 281. WR 75. WN 0. RHON 100. EOF 0.
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ICHASM Isotope module H 2 O reservoirs are well-mixed with inputs Mixing: RN = RN 1 + RN 2 Fractionation: R = R 0 f -1) kin = (1-h)nC D 10 3, 0.5 < n < 1, C D = 28.5 ( 18 O), 25.1( 2 H) evap = kin + eq Selection: ‘run-off’ = excess - max. storage capacity
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LSDRV: forcing variables CHASM: Prec. mixing LSEB1: skin temperature, evaporation LSEB2: soil T. and snow melt LSMB: water reservoirs ICHASM
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CHASM & PILPS How ICHASM Tropical rainforestGrassland (Desborough 1999)
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EQY1: Tumbarumba
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EQY1: Manaus
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EQY1: Munich
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Overview How ICHASM works, it’s tile structure and 4 water reservoirs (WG, WR, WC, WN) + isotopes, parameterisation of hydrological process (evaporation, run-off) Results from ICHASM at different timescales, EQY1 How ISOLSM works, soil, vegetation, hydrology and isotope modules
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ISOLSM
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ISOLSM
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Parameterisations Soil : (0-10, 10-40, 40-100 cm, 1-2, 2-4, 4-6 m) WR ~6 m, WC = 0.1*(LAI+SAI)*A T
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Time invariant surface var’sTime invariant surface var’s
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"/data3/mjf/FORCING/FORCING_EQY1_MUNICH_IPILPS1.txt”
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LSM Isotope module How ICHAS M Evaporation : Leaf moisture : Resistances:
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ISOLSM
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Conclusions...
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iPILPS
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P Soil
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