02.04.2004 GIST 21 st , Boulder The Surface Radiation Budget within the atellite Application Facility on Climate Monitoring (CM-SAF) 02.04.2004 Rainer Hollmann 2 with Annegret Gratzki 2 Richard Müller 2 , Carlos Geijo-Guerrero 3 , Alex Kryvobok 4 2 Deutscher Wetterdienst, 3 INM, Madrid, Spain 4 UMHI, Kiev
30
Embed
The Surface Radiation Budget within the Satellite Application Facility on Climate Monitoring
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
02.04.2004 GIST 21st, Boulder
The Surface Radiation Budget within theSatellite Application Facility on Climate Monitoring
(CM-SAF)
02.04.2004
Rainer Hollmann2
withAnnegret Gratzki2
Richard Müller2, Carlos Geijo-Guerrero3, Alex Kryvobok4
2Deutscher Wetterdienst,3INM, Madrid, Spain
4UMHI, Kiev
02.04.2004 GIST 21st, Boulder
The Surface Radiation Budget within the CM-SAF
• Satellite Application Facility on Climate Monitoring
• Surface Shortwave Radiation• general approach • initial validation results• first pre-operational images
• Surface Longwave Radiation• general approach• initial validation results • first pre-operational images
• Conclusions
Overview of Talk
02.04.2004 GIST 21st, Boulder
SAF - Structure and Hosts
United Kingdom - UKMO -Numerical Weather
Prediction
Denmark - DMI -GRAS
Portugal - IM -Land Surface
Analysis
Finland - FMI -Ozone
Monitoring
Spain - INM -Support to Now-casting and Very
Short Range Forecasting
France - MF -Ocean and Sea
Ice
Germany - DWD -Climate Monitoring
E U M E T S A T
02.04.2004 GIST 21st, Boulder
CM-SAF: The Partners
02.04.2004 GIST 21st, Boulder
• support climate monitoring at regional scale
• provide climate data sets
• provide validation data
CM-SAF: objectives and characteristics
• Operational environment
• Long term with reprocessing capability
• Quality Assurance + Control
• provision of validated
• homogeneous and
• consistent data sets
02.04.2004 GIST 21st, Boulder
GMT May 4 14:49:21 2001 OMC - kk+w 0 10002000
km
Inner Arctic Circle
MSG Area
Initial Baseline Area
CM-SAF: The Area under investigation…
> 2007
> 2004
> 2007
• BL-Area: Europe and part of North Atlantic Ocean (60° W – 60° E, 30° N – 80° N)
> 20??
02.04.2004 GIST 21st, Boulder
CM-SAF: The Schedule
2000 20101 2 3 4 5 6 7 8 9
DEVELOPMENT PHASE
B r i d g i n g P h a s e
ENVISAGED
incl. R&D
O p e r a t i o n s
MSG_1(27.08.2002)
METOP_1
IOP incl. R&D
AVHRR+MSG / BL
AVHRR BL
AVHRR+MSG / FD
02.04.2004 GIST 21st, Boulder
The Surface Radiation Budget within the CM-SAF
• Satellite Application Facility on Climate Monitoring
• Surface Shortwave Radiation• general approach • initial validation results• first pre-operational images
• Surface Longwave Radiation• general approach• initial validation results • first pre-operational images
• Conclusions
02.04.2004 GIST 21st, Boulder
Surface Radiation Budget:Schematic overview of processing
MSG(SEVIRIGERB)
NOAA-AVHRR/EPS
CloudproductsPer pixel
Surface Radiation BudgetPer pixel
Background
LUT
NWP-model data
Gridding
merging
AlbedoPer pixel
02.04.2004 GIST 21st, Boulder
Cloud top height March 2004
• Full area has been split up into ~ 30 tiles for cloud processing• 1 x 1 km² spatial resolution• instantaneous data of an overpass 06.03.2004 02:48
02.04.2004 GIST 21st, Boulder
Monthly mean cloud cover Feb. 2004
• Full area, 15 km x 15 km spatial resolution
02.04.2004 GIST 21st, Boulder
Solar Surface Radiation:General approach/Layout prototype
NSTAT: Number of available validation stations, MA_ME: Measured monthly average, SI_ME: standard deviation of measured data, MA_CA.: Calculated monthly average, SI_CA: standard deviation of calculated data, BIAS calculated - measured in W/m²and % of measured average.
Validation results of monthly means SIS, Based on ISCCP-DX/ECMWF input data
Surface Shortwave Radiation:Validation (II)
02.04.2004 GIST 21st, Boulder
Comparison of SIS monthly mean with SRB-GEWEX (Aug. 1995)
CM-SAFSIS in W/m²
SRB-GEWEXSIS in W/m²(SW)
Surface Shortwave Radiation
02.04.2004 GIST 21st, Boulder
Comparison of SIS monthly mean with SRB-GEWEX (Aug. 1995)
Monthly mean, regional comparison1° x 1° lat-lon
SIS (CM-SAF) in W/m²
SIS
(GE
WE
X)
in W
/m²
Y = 0.8799120291 * X + 16.22678981Mean bias: 13 W/m²R-squared = 0.82
Surface Shortwave Radiation
02.04.2004 GIST 21st, Boulder
First results from February 2004: downwelling Shortwave
Daily mean if 3 daylight overpasses
Monthly mean if 20 daily means are present
02.04.2004 GIST 21st, Boulder
First results from February 2004: Surface albedo monthly mean
02.04.2004 GIST 21st, Boulder
The Surface Radiation Budget within the CM-SAF
• Satellite Application Facility on Climate Monitoring
• Surface Shortwave Radiation• general approach • initial validation results• first pre-operational images
• Surface Longwave Radiation• general approach• initial validation results • first pre-operational images
• Conclusions
02.04.2004 GIST 21st, Boulder
The Gupta ParameterisationCACCSDL 21
7.333
22101 )( eTVAVAVAAC
hPahPaSe TTTT 740925 05.035.06.0
)( 33
2210
4
2CCC
cb
WBWBWBB
TC
Cloud-parameterisation
Clear sky parameterisation
The surface Radiation Budget within the CM-SAF: Longwave Radiation
02.04.2004 GIST 21st, Boulder
Surface Longwave Radiation (SDL):Validation
Two initial validation exercises:
• Take radiosoundings for different BSRN stations, run Gupta with that and compare against surface measurements & RTM caculations (Fu-Liou)
case study for Lindenberg August 1995
• Take ISCCP-DX cloud data + ECMWF profiles of water vapour and temperature
5 months for validation with surface meas. Comparison with GEWEX-SRB for August 1995
02.04.2004 GIST 21st, Boulder
Investigations of SDL-BiasesWhat is the effect of the improvements?
1995
1997
02.04.2004 GIST 21st, Boulder
Monthly meanof downwelling longwave radiation for August 1995 in W/m²
First results from February 2004: downwelling Longwave
Monthly average
02.04.2004 GIST 21st, Boulder
The Surface Radiation Budget within the CM-SAF
• Satellite Application Facility on Climate Monitoring
• Surface Shortwave Radiation• general approach • initial validation results• first pre-operational images
• Surface Longwave Radiation• general approach• initial validation results • first pre-operational images
• Conclusions
02.04.2004 GIST 21st, Boulder
The Surface Radiation Budget within the CM-SAF
• Satellite Application Facility on Climate Monitoring has started the pre-operational processing of NOAA-AVHRR overpasses
• Surface Radiation Processing• improve aerosol information • monitoring of pre-operational products• test runs for GERB/SEVIRI (April 04)• test runs with CERES input (~summer 04)
• Ongoing validation • target months Oct. 2002, June 2003, Feb. 2004• building a matchup-database for validation