THE RELATION OF PRECIPITATION PATTERNS IN NORTH AMERICA TO CERTAIN TYPES OF JET STREAMS AT THE 300-MILLIBAR LEVEL

1 October 1949

journal article
Published by American Meteorological Society in Journal of Meteorology

Vol. 6 (5) , 347-352
https://doi.org/10.1175/1520-0469(1949)006<0347:troppi>2.0.co;2

Abstract

Precipitation relative to the 300-mb jet is studied through the patterns formed by 24-hr rainfall amounts in 57 synoptic situations. Definite patterns are found and a brief statistical consideration given of the position of maximum precipitation relative to the center of strongest winds. It is found, when allowance is made for latitudinal variations in the availability of moisture, that the precipitation tends to be a maximum underneath the jet. Situations with open troughs of small amplitude are compared with cases of almost pure zonal flow.

Keywords

JET STREAMS
LEVEL PRECIPITATION
MILLIBAR LEVEL
PRECIPITATION PATTERNS
PRECIPITATION RELATIVE
STATISTICAL

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