J5.7 Satellite wind experiments in GMAO GEOS-5 system

Tuesday, 8 January 2013: 5:00 PM
Ballroom A (Austin Convention Center)
Dagmar Merkova, NASA/GSFC, Greenbelt, MD; and R. Gelaro

Handout (3.2 MB)

The impact of satellite-derived atmospheric motion vectors (AMVs) on numerical weather forecasts is examined using the GEOS-5 global atmospheric data assimilation system. All AMVs operationally used in the GEOS-5 control run are replaced by AMV's produced by the U.S. Navy's NAVDAS-AR atmospheric data assimilation system that is larger in volume and specially averaged (“superobing"). Preliminary results show improvements with the NAVDS-AR data selection. Different AMV subsets and settings of the GEOS-5 system are used to further determine the main cause of improvements in the impact of the AMV on the GMAO GEOS-5 system.
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