GEWEX Radiation Panel Report

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Presentation transcript:

GEWEX Radiation Panel Report (Current Activities and Plans) Christian Kummerow Colorado State University Chair, GEWEX Radiation Panel Fourth WCRP Observations and Assimilation Panel (WOAP) Meeting Date: 29-31 March 2009 University of Hamburg

GRP Overview Radiation Activities RAMI - RADiative transfer Model Intercomparison CIRC - Continual Intercomparison of Radiation Codes Data Sets Clouds - ISCCP Radiation - SRB Surface reference observations - BSRN Aerosols - GACP Precipitation - GPCP Sfc gauge obs (GPCC) report to CEOP Turbulent Fluxes SeaFlux LandFLux - Soil Moisture 2

Available Global Datasets 1979 1985 1990 1995 2000 2005 2010 Parameter Clouds Water Vapor TOA Radiation Precipitation SRF Radiation Atmospheric Circulation Evaporation TIME Pentad Daily 3 – 6 hrs 50 km 250 km 100 km 3

GEWEX Radiation Panel Products GEWEX Radiation Panel supports the production of Long Term, Global Products consisting of available satellite and in-situ observations. GRP products are officially endorsed by the GEWEX Radiation Panel GRP products are periodically assessed against in-situ and new “State of the Art” products of shorter duration. GRP products and assessments conform to high standard of documentation and publication GRP products are freely and openly available to the community without restrictions. 4

Cloud Assessment Activity High Cloud Amount Absolute values depend on instrument sensitivity and method, but distributions are similar CALIPSO AIRS-LMD ISCCP PATMOS-x MODIS-ST MODIS-CE (%) CALIPSO (t > 0.1) AIRS_LMD TOVS Path-B HCA (%) 5

Example of monthly LE fluxes Example of monthly LE fluxes Monthly averaged latent fluxes (LE) 1.Introduction 2.Products 3.Examples 4.Annual means 5. Zonal means 6. Basins 7. Summary August 1993 [W/m2] <carlos.jimenez@obspm.fr> 6

GRP Current Plans Prepare for reprocessing of individual data sets using common ancillary information with other GRP products. Revisit requirement for a GEWEX Water Vapor product. Produce first multi-product dataset to promote Water and Energy closure studies. LandFlux making great strides. Develop roadmap for transition to operations SCOPE-CM. Foster Data Stewardship via GCICS/NOAA SDS Develop “robust” relationship among observed Water and Energy Variables to help validate Climate Model processes Expand tools (e.g. ISCCP simulator) for broad use. - Working w. GFDL for TRMM simulator Continue to promote improvements in polar regions Need to prepare inventory of available data from CLIC vs data needs from GRP. 7