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Spatial and Temporal scales of time-averaged 700 MB height anomaliesThe monthly and seasonal forecasting technique is based to a large extent on the extrapolation of trends in the positions of the centers of time averaged geopotential height anomalies. The complete forecasted height pattern is subsequently drawn around the forecasted anomaly centers. The efficacy of this technique was tested and time series of observed monthly mean and 5 day mean 700 mb geopotential heights were examined. Autocorrelation statistics are generated to document the tendency for persistence of anomalies. These statistics are compared to a red noise hypothesis to check for evidence of possible preferred time scales of persistence. Space-time spectral analyses at middle latitudes are checked for evidence of periodicities which could be associated with predictable month-to-month trends. A local measure of the average spatial scale of anomalies is devised for guidance in the completion of the anomaly pattern around the forecasted centers.
Document ID
19820017701
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Gutzler, D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 10, 2013
Publication Date
December 1, 1981
Publication Information
Publication: Modeling and Simulation Facility: Res. Rev., 1980 - 1981
Subject Category
Meteorology And Climatology
Accession Number
82N25577
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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