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An assessment of radiation budget data provided by ISCCP and GEWEX-SRB

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Bakan,  Stephan
The Land in the Earth System, MPI for Meteorology, Max Planck Society;
Terrestrial Remote Sensing / HOAPS, The Land in the Earth System, MPI for Meteorology, Max Planck Society;

/persons/resource/persons37202

Kinne,  Stefan
The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;
Observations and Process Studies, The Atmosphere in the Earth System, MPI for Meteorology, Max Planck Society;

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2005GL025503.pdf
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Citation

Raschke, E., Bakan, S., & Kinne, S. (2006). An assessment of radiation budget data provided by ISCCP and GEWEX-SRB. Geophysical Research Letters, L07812. doi:10.1029/2005GL025503.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-FCB6-A
Abstract
The projects ISCCP and GEWEX-SRB compute global data sets of radiation budget components at the top of the atmosphere and at the surface. Time series range from July 1983 to June 2001, and to October 1995, respectively. Comparing monthly averages over broader zones we find that the SRB underestimates the incident radiation at TOA by more than 2–5 Wm−2 over the tropics and up to 40 Wm−2 over polar regions. The ISCCP infrared radiation fluxes near the surface and at TOA, in particular over both polar zones, are higher than those of the SRB. Clouds in the ISCCP appear optically less effective than in the SRB. Interannual and month-to-month variations are observed indicating serious errors in ancillary data. Complete reprocessing is recommended. End products need validation within this large domain in space and time with correlated radiation budget measurements at TOA and at ground.