PATTERNS OF CHANGE OF PRECIPITATION IN THE UNITED STATES

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  • 1 Ohio State University
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Abstract

Because of its relative insensitivity to changes of station location and to such natural phenomena as volcanic activity, precipitation is a promising weather element for the study of secular changes of the general circulation. A study of the precipitation records for individual stations, smoothed by the use of decadal moving averages, suggests that the prominent precipitation trends are continuous in time and space. A preliminary synoptic study of the interdecadal changes of average precipitation reveals details of the circulation changes in regard to cyclonic activity and moisture supply.

Abstract

Because of its relative insensitivity to changes of station location and to such natural phenomena as volcanic activity, precipitation is a promising weather element for the study of secular changes of the general circulation. A study of the precipitation records for individual stations, smoothed by the use of decadal moving averages, suggests that the prominent precipitation trends are continuous in time and space. A preliminary synoptic study of the interdecadal changes of average precipitation reveals details of the circulation changes in regard to cyclonic activity and moisture supply.

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