88th Annual Meeting (20-24 January 2008)

Wednesday, 23 January 2008: 4:00 PM
Comparison of MERRA with ERA-40 on river basin scales
224 (Ernest N. Morial Convention Center)
Alan K. Betts, Atmospheric Research, Pittsford, VT; and M. G. Bosilovich
Using reanalysis data averaged over river basins in the Americas (the Mackenzie, Mississippi, Amazon and LaPlata basins), we will compare the surface water and energy budgets on the diurnal, daily and annual timescales from the new GMAO reanalysis known as GEOS-5/MERRA (Modern Era Retrospective-analysis for Research and Applications; http://gmao.gsfc.nasa.gov/merra/) with the ECMWF reanalysis, known as ERA-40. We will compare differences in systematic biases and the coupling of land-surface processes to the cloud and radiation fields.

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