IPILPS Workshop

ANSTO 18-22 April 2005

ICHASM & ISOLSM

by Dr. Matt Fischer

ICHASMICHASM

Tiles, Evaporation and ...Tiles, Evaporation and ...

… … modesmodes

• How ICHASM

RS modesRS modes

Parameterisations Parameterisations

• Soil T: (0-5, 5-15, 15-50, 50-100 cm; 1-2 m)

• WR 150 mm, WG 40 mm,WC = 0.1*Aveg*Aleaf*ATile , WN = inf.

Layers ParameterisationCanopy 1 AerodynamicSoil Temperature 5 Heat-diffusionSoil Moisture 1(2) BucketRootzone 1 Bucket

‘‘Time-invariant’ surface var’s. 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.

ICHASM Isotope moduleICHASM Isotope module• H2O reservoirs are well-mixed with inputs

• Mixing: RN = RN1 + RN2

• Fractionation: R = R0f-1) kin = (1-h)nCD103, 0.5 < n < 1, CD = 28.5 (18O), 25.1(2H) evap = kin + eq

• Selection:‘run-off’ = excess - max. storage capacity

LSDRV: forcing variables

CHASM: Prec. mixing

LSEB1: skin temperature,

evaporation

LSEB2: soil T. and snow melt

LSMB: water reservoirs

ICHASMICHASM

CHASM & PILPSCHASM & PILPS

• How ICHASM

Tropical rainforest Grassland

(Desborough 1999)

EQY1: TumbarumbaEQY1: Tumbarumba

EQY1: TumbarumbaEQY1: Tumbarumba

EQY1: Manaus EQY1: Manaus

EQY1: ManausEQY1: Manaus

EQY1: MunichEQY1: Munich

EQY1: MunichEQY1: Munich

OverviewOverview• 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

ISOLSMISOLSM

ISOLSMISOLSM

Parameterisations Parameterisations

• Soil : (0-10, 10-40, 40-100 cm, 1-2, 2-4, 4-6 m)

• WR ~6 m, WC = 0.1*(LAI+SAI)*AT

Layers ParameterisationCanopy 1 Monin-ObukhovSoil Temperature 6 Heat-diffusionSoil Moisture 6 Darcy's lawRootzone 6 Darcy's law

Tim

e in

vari

ant

surf

ace

var’

s T

ime

inva

rian

t su

rfac

e va

r’s

• "/data3/mjf/FORCING/FORCING_EQY1_MUNICH_IPILPS1.txt”

LSM Isotope moduleLSM Isotope module

• How ICHASM

• Evaporation:

• Leaf moisture:

• Resistances:

ISOLSMISOLSM

Conclusions ...Conclusions ...

iPILPS

P P

• Soil