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Developement of an Optimum Interpolation Analysis Method for the CYBER 205A state-of-the-art technique to assimilate the diverse observational database obtained during FGGE, and thus create initial conditions for numerical forecasts is described. The GLA optimum interpolation (OI) analysis method analyzes pressure, winds, and temperature at sea level, mixing ratio at six mandatory pressure levels up to 300 mb, and heights and winds at twelve levels up to 50 mb. Conversion to the CYBER 205 required a major re-write of the Amdahl OI code to take advantage of the CYBER vector processing capabilities. Structured programming methods were used to write the programs and this has resulted in a modular, understandable code. Among the contributors to the increased speed of the CYBER code are a vectorized covariance-calculation routine, an extremely fast matrix equation solver, and an innovative data search and sort technique.
Document ID
19850021144
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Nestler, M. S.
(Sigma Data Computing Corp. Rockville, MD, United States)
Woollen, J.
(Sigma Data Computing Corp. Rockville, MD, United States)
Brin, Y.
(Sigma Data Computing Corp. Rockville, MD, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: NASA. Goddard Space Flight CenterRes. Rev., 1983
Subject Category
Meteorology And Climatology
Accession Number
85N29456
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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