Employment ESSA and NIMBUS satellite information in tropical analysis and forecasting
Hughes, Francis D.
Renard, Robert J.
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ESSA 2 and NIMBUS 2 APT daylight cloud photographs of the western Pacific area (0-20N, 135-165E) from 13 through 30 May 1966 were manually converted into digitized cloud charts indicating cover and type. The charts were superimposed on operational surface and 250-mb analyses and used in combination with 24-hour isallobaric/ isalloneph charts to revise the analyses to reflect satellite observations. The map series indicated the relationship of synoptic-scale cloud systems, primarily in and near the Equatorial Trough region of the Western Pacific, with low level pressure fields and upper level lateral divergence zones. The cloud systems tied to Equatorial Trough phenomena were found to be trackable from day to day. Rainfall appeared to correlate well with the cloud charts and as a test, cloud and precipitation forecasts were made and verified for selected stations.
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