Community Activities and Plans A.Will (BTU Cottbus) and the CLM-Community

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Community Activities
and Plans A.Will
(BTU Cottbus) and the CLM-Community
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• Intended use of the Climate mode
• Simulation of climate change in different regions
  of the world.
• Quantification and reduction of ucertainties of
  climate change (IPCC 2001/2006)

• Relevance for GCMs
• Analysis of the relevance of nonhydrostatic
  effects local phenomena and of microphysics for
  climate dynamics.
• Relevance for NWP
• detection of model deficiencies not visible on
  small time scales
• Independent evaluation without influence of
  initial conditions and data assimilation

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Regional Climate Model Institution Contact Non- Hydro NWP RCM
CLM CLM-Com., BTU A.Will Yes Yes
REMOEMECHAM MPIfM D.Jacob No No
RegCM ISPRA F.Giorgi No No
CNRM-RM4 CNRM M.Deque Yes(2) Yes,(1)
(ARPEGE Climate) CNRM M.Deque No No
HIRHAMHIRLAMECHAM AWI Potsdam A.Rinke No Yes,(1)
HIRHAMHIRLAMECHAM DMI JHOB Christensen No Yes,(1)
RACMO (HIRLAMIFS) KNMI E.Meijgaard No Yes,(1)
RCAORCA(HIRLAM)RCO Rossby Center M.Rummukainen No Yes,(1)
HadRM3 Hadley/UKMO R.Taylor / R.Jones No No
CHRM (HRM EM) ETHZ D.Luethi No No
MM5 IMK-IFU H.Kunstmann No No
WRF2 WRF-Com., PNL R.Leung Yes(2) Yes
RAMS Atmet comp. R.Pielke / Cotton Yes(2) No
CRCM CCCma Laprise / G.Boer Yes No
RSM ECPC J. Roads No No
NHM MRI, Yespan M.Yoshizaki Yes No
(1) different model versions for NWP and RCM
(2) Climate mode not overall tested.
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9.2006 41 Members 9.2007 55 Members
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• Aims of the CLM CommunityFurther development of
  the COSMO-CLM to be a regional earth system
  modelQuantification and Reduction of Model
  UncertaintiesEfficient Use of Computational
  RessourcesPreparation and Conduction of
  Consortial Scenario Runs

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• Main Projects in the last year
• PrEProcessor (PEP) for External Fields (a)
• Unified Preprocessor int2lm2 (a)
• Veg3D fully coupled with COSMO-CLM_4 a
• Basic Sensitivity Studies (a)
• Consortial runs successfully finished a
• Coupling with Com. Land Model (CLM)
• Improvements of TERRA_ML
• Aerosol-Cloud Interaction
• Standard Postprocessor

CLM Model system Features of int2lm_2
Preprocessor
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PrEProcessor (PEP) for external fields
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PrEProcessor (PEP) for external fields
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int2clm int2lm
Int2lm2 Interpolation to LM/CLM grid
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1. Implementation of soil-vegetation model
VEG3DCathérine Meißner and Gerd Schädler,
University / Research Center Karlsruhe
Developed by the CLM-Community in cooperation
with the German weather service

• VEG3D is fully coupled with CLM version 4.0 and
  is being evaluated
• Main differences between TERRA_LM and VEG3D
• Standard soil model of CLM (TERRA_LM) uses the
  surface temperature for transpiration calculation
  lt-gt VEG3D has an explicit vegetation layer (big
  leaf concept) and simulates a vegetation
  temperature
• Runoff from soil layers is organized differently
  in both models
• Different formulation of water transport in soil
  and snow treatment

• Additional parameters
• Land use gt taken from the PEP
• Soil parameters gt additional file in CLM code

• First results
• Annual evapotranspiration sum more homogenous in
  VEG3D which agrees better with measurements
  (figures)
• Influence on annual preciptation in the range of
  100 200 mm

OBSERVATIONS TERRA_ML Veg3D mm
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BSS Small Disturbance of Boundary Conditions
Once in a Month

7.1981 JJA 1981
TOT_PREC
DIFFTOT_PREC, STD
slope-0.46
1981 1979-1981
DIFF T_2m, STD
slope-0.4
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WL-Ref yearly average
BSS TERRA_ML Sensitivity (Alexander Block)
H
E
QS
QL
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Consortial Runs with CLM
Configuration 256x271x32 Gridpoints ?x ?y
0.165 deg ECHAM5 bound. cond. CLM3.0
int2lm1 Model runs C20_1 1960-2000 C20_2
1960-2000 C20_3 1960-2000 A1B_1
2001-2100 A1B_2 2001-2100 B1_1
2001-2100 B1_2 2001-2100 and CLM050
1979-2000 with ERA40 BC
Presentation of Results HH 7 Dec. 2007
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Regionslevel 1
Applications Quality Control
consortial runs
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Regionslevel 2
Applications Quality Control
consortial runs
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Regionslevel 3
Applications Quality Control
consortial runs
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Com1 Quantification of Model UncertaintiesPrecip
itation, climate mean 79-98

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Com1 TOT_PREC, CLM3-GPCC
Applications Climatological Evaluation of
CLM, 79-93 Model Evaluation
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Com1 TOT_PREC, CLM3-DWD

Applications Climatological Evaluation of
CLM, 79-93 Model Evaluation
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Com1 T_2m, CLM-CRU

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Com1 T_2m CLM-CRU005January July

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Com1 T_2m CLM3-DWD

Applications Climatological Evaluation of
CLM, 79-93 Model Evaluation
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Com2 C20_1 Observations, 61-90TOT_PREC
T_2m

Applications Quality Control consortial runs
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Com3 A1B_1 (2031-2060) - C20_1
(1961-1990)TOT_PREC T_2m

Applications Quality Control consortial
runs
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Com3A1B_1 (2031-2060) C20_1
(1961-1990)TOT_PREC 1 4 7 10

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Com3A1B_1 (2031-2060) C20_1
(1961-1990)T_2m 1 4 7 10

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Ongoing Activities in Modelling

• Implementation of soil-vegetation model VEG3D ,
• Cathérine Meißner and Gerd Schädler, IMK-TRO
  Karlsruhe
• 2. Coupling of the soil-vegetation Community Land
  Model (CLM),
• Reto Stöckli and Sonia Seneviratne, ETH
• The documentation of the Community Land Model can
  be found on the homepage
• http//www.cgd.ucar.edu/tss/clm/. The model is
  used in the Community Climate
• System Model (CCSM).
• 3. 1. Aerosol-Cloud coupling and Atmospheric
  Chemistry,
• S.Metzger (MPIfC Mainz)
• 3. 2. Fast atmospheric chemistry solvers
• E.Schaller (BTU Cottbus)
• 4. Implementation of the dynamical NEMO ocean
  model for the mediterranean H.Hübener, U.Ulbrich
  (FU Berlin), S.Legutke und I.Fast (Model and
  Data, Hamburg), A.Will (BTU Cottbus)
• 5. Publication of a special issue CLM in
  Meteorologische Zeitschrift in 4.2008

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The CLM-Community is interested to cooperate with
the COSMO membersSuggestions

• joint model verification/evaluation in RCM and in
  NWP mode in different regions in Europe
• climatological data on a regular grid
• Links between the web-pages, similar structure
• Invitation of one member of COSMO to workshops

www.clm-community.eu
thank you ef?a??st? !
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2. Coupling of Climate Local Model and Community
Land Model Reto Stöckli, Sonia Seneviratne, ETH
Zurich

• Community Land Model
• http//www.cgd.ucar.edu/tss/clm/
• community model
• used in Community Climate System Model (CCSM)

• Modules
• Biogeophysics
• River routing
• Carbon cycle (plant physiology)
• Vegetation dynamics
• C/N model (nutrients)
• Dust, VOCs