Review of

TERRA developmentswithin

COLOBOC

J. Helmert, H. Asensio, G. Vogel, M. Lange, B. Ritter

Deutscher Wetterdienst

Task 4: Revision of TERRA and the associated look-up tables

• Gather and integrate tested developments of TERRA in official COSMO code - V4.11 2009/11/30

• Define a consolidated set of look-up tables EXTPAR (ECOCLIMAP, GLOBCOVER)

• Find and validate an ‘optimal’ reference configuration of TERRA, using the external parameters developed within task 3.2 with the consolidated look-up tables

Benefit: Unification of physics in TERRA standalone, GME, and COSMO Appropriate configuration for all climate regions

Tasks

Long-term trend T2M-Bias

• Aerosol climatology• Emissivity• Vegetation climatology (LAI, PLCOV)• Minimum stomatal resistance (GLC2000, ECOCLIMAP)• Vegetation type albedo• Non-uniform root distribution

GME configuration

External Parameters GME

External Parameters GME

External Parameters GME

PRS_MIN/LAI_MX ROUTI 1999-2007PRS_MIN = 150 s/m

Small values = efficient evapotranspiration

PRS_MIN/LAI June ROUTI 2007-

PRS_MIN/LAI June EXP Masson (2003) - Ecoclimap

BSvegveg )1(15.0

Albedo (snow free):

Vegetation albedo ROUTI

EXP 7750Masson (2003) - Ecoclimap

BS

D

E

veg

ff

fveg

)1(

)2.0)1(15.0

1.0(

Albedo (snow free):

Vegetation albedo EXP

Global Verification

Europe

East Sibiria

North America

EXP 7750 ECOCLIMAP+ALBEDO 02.06.2009-01.07.2009 00 UTC i192f

Tropics Africa

Tropics America

Global Verification

SK: -6.03SK: -5.68 SK: 1.02

SK: -11.7 SK: -6.36 SK: -0.79

SK: -8.00 SK: -9.8 SK: -4.56

SK: 1.99

SK: 2.62

SK: 0.37

SK: 3.64 SK: 5.78 SK: 0.78

• PRS/LAI ratio and vegetation type albedo have strong impact on the split-up of fluxes

• Positive impact on T_2M and TD_2M in temperate zones

• Neutral or small negative impact in tropics

• Since March 2011: Soil moisture analysis (SMA) in GME

Conclusions of GME EXP 7750

Bias and Stdev T2m over Europe, avg(12, 15 GMT)

Soil moisture content over Europe, top layers Soil moisture content over Europe, bottom layers

M. Lange

EuropeT2m Bias

decreased by SMA

Soil moisture increase during

summer!Running time (2009)

Running time (2009) Running time (2009)

GME-SMA EXP 109/1009

20110310 -

Experiments

SMA-Monitoring (M. Lange)

Validation

Europe

T2M Bias and Stdv SMA Incr. Mean and Stdv

bottom layers

SMA Incr. Mean and Stdv

top layers

Validation

Europe

T2M Bias and Stdv SMA Incr. Mean and Stdv

bottom layers

Soil moisture W_SO (mm)

top layers

soil moisture: level 4

Validation

soil moisture: level 5

Validation

latent heat flux

Validation

sensible heat flux

Validation

Verification EUR

T2M

T2M

PS

PS

TD2MD

TD2MD

TMIN TMAX

DD

FF

FFDD

TMIN TMAX

VW

VW

BIA

SR

MS

E

COSMO Experiments

• Aerosol climatology• Emissivity• Vegetation climatology (LAI, PLCOV)• Minimum stomatal resistance (ECOCLIMAP)• Vegetation type albedo• COSMO-DE with 65 vertical levels (EXP 8010) Summer period : 25.06.2010-17.07.2010

• Non-uniform root distribution • Ground water with upward diffusion• Soil moisture dependent heat conductivity• Start with new model initialisation

Tested adaptions in int2lm and TERRA EXP 7928/8010

Verification CEU BIAS

Verification CEU RMSE

History

CLM Study (ETH)

History

CLM Study (ETH)

• Aerosol climatology – could explain increase in T2M-Bias• Emissivity• Vegetation climatology (LAI, PLCOV)• GLOBCOVER 2009 land use data• Minimum stomatal resistance (ECOCLIMAP)• Vegetation type albedo

Summer period : 01.07.2011-12.08.2011

• Non-uniform root distribution • Ground water with upward diffusion• Soil moisture dependent heat conductivity• Start with new model initialisation (8310 ROUTI config CTRL)

Tested adaptions in int2lm and TERRA EXP 8309/8310

Verification EXP vs CTRL

T2M

T2M

PS

PS

TD2MD

TD2MD

TMIN TMAX

DD

FF

FFDD

TMIN TMAX

VW

VW

BIA

SR

MS

E

8309/8310 00 UTC 12.07.-12.08.2011

Verification EXP vs CTRL

T2M

T2M

PS

PS

TD2MD

TD2MD

TMIN TMAX

DD

FF

FFDD

TMIN TMAX

VW

VW

BIA

SR

MS

E

8309/8310 12 UTC 12.07.-12.08.2011

Verification EXP vs ROUTI

T2M

T2M

PS

PS

TD2MD

TD2MD

TMIN TMAX

DD

FF

FFDD

TMIN TMAX

VW

VW

BIA

SR

MS

E

8309/ROUTI 00 UTC 12.07.-12.08.2011

Verification EXP vs ROUTI

T2M

T2M

PS

PS

TD2MD

TD2MD

TMIN TMAX

DD

FF

FFDD

TMIN TMAX

VW

VW

BIA

SR

MS

E

8309/ROUTI 12 UTC 12.07.-12.08.2011

• Results from GME experiments suggest that soil moisture analysis (SMA) has a large impact on the results

• Difficulties for parameterization changes to outperform SMA

• Impact of model initialisation is important

• Improved post-processing required to avoid experiment initialisation from large-scale models

• Benefit: Unified land-surface scheme for global, regional, and stand-alone application

Conclusions and Outlook