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Assessment of CFSRR medium range forecast skill

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1990’s Timeline<br />

http://www.emc.ncep.noaa.gov/mmb/data_processing/Satellite_Historical_Documentation.htm<br />

http://www.emc.ncep.noaa.gov/gmb/STATS/html/model_changes.html<br />

• 1991 (Cray YMP)<br />

• R1 planning,<br />

• SSI to ops,<br />

• GFS T126L28<br />

• 1994 R1 began, T62 L28<br />

• 1996 40 years <strong>of</strong> R1, R2 underway<br />

• 1998<br />

• direct assimilation <strong>of</strong> radiances<br />

• First time positive impact <strong>of</strong> sat. data in NH<br />

• 50 years <strong>of</strong> R1 complete

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