Accession Number : AD0777600

Title :   Computer Map Typing - Optimizing the Correlation Coefficient Threshold,


Personal Author(s) : Sabin,Robert C.

Report Date : JAN 1974

Pagination or Media Count : 34

Abstract : The 12th Weather Squadron has been developing procedures for the incorporation of computer derived weather map analog information into a terminal forecast system. Prior to the routine development of synoptic map type catalogs for the CONUS, it was necessary to answer several questions relative to the procedures which would be employed in the preparation of each catalog. This paper addresses only one of these questions; 'What correlation coefficient threshold provides the best of map types.' The choice of an appropriate threshold value is, at best, a compromise. This paper shows that a value of 0.8 produces a typing system with a reasonable degree of similarity within each type, a good overall description of the pressure patterns affecting the area, an acceptable number of uncorrelated maps, and an adequate description of the climatology within each type. (Author)

Descriptors :   *Meteorological charts, *Mapping, *Computer applications, Correlation techniques

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE