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Exploitation of Geostationary Earth Radiation Budget data using simulations from a numerical
 

Summary: Exploitation of Geostationary Earth Radiation
Budget data using simulations from a numerical
weather prediction model: Methodology and data
validation
Richard P. Allan and Anthony Slingo
Environmental Systems Science Centre, University of Reading, Reading, UK
Sean F. Milton and Ian Culverwell
Met Office, Exeter, UK
Received 14 December 2004; revised 17 March 2005; accepted 14 April 2005; published 30 July 2005.
[1] We describe a new methodology for comparing satellite radiation budget data with a
numerical weather prediction (NWP) model. This is applied to data from the
Geostationary Earth Radiation Budget (GERB) instrument on Meteosat-8. The
methodology brings together, in near-real time, GERB broadband shortwave and
longwave fluxes with simulations based on analyses produced by the Met Office global
NWP model. Results for the period May 2003 to February 2005 illustrate the progressive
improvements in the data products as various initial problems were resolved. In most
areas the comparisons reveal systematic errors in the model's representation of surface
properties and clouds, which are discussed elsewhere. However, for clear-sky regions over
the oceans the model simulations are believed to be sufficiently accurate to allow the
quality of the GERB fluxes themselves to be assessed and any changes in time of the

  

Source: Allan, Richard P. - Department of Meteorology, University of Reading

 

Collections: Geosciences