Accession Number : AD0290821

Title :   TROPICAL UPPER AIR STUDIES

Corporate Author : GENERAL MILLS INC MINNEAPOLIS MN

Personal Author(s) : BELMONT, A.D. ; DARTT, D.G.

Report Date : 01 SEP 1962

Pagination or Media Count : 1

Abstract : Considerable stratospheric upper-air data have been gathered and summarizing programs have been prepared for their computer analysis. The 26month and 12-month cycles of tropical winds have been examined for Balboa, San Juan, Canton and Kwajalein. Harmonic and spectral analyses of 50-mb data show the relative importance of these and other periods and how they vary with latittude. Time sections of the zonal wind component were prepared for the same four stations. These show the variation of the observed waves with height, time and station. The consolidated long-term annual mean wave at stations about 10 degrees from the equator was found to be somewhat sinusoidal but waves for individual years were usually far from sinusoidal. At stations near the equator where the biennial cycle of 21 to 28 months is most pronounced, the shape of the annual wave could not be determined with the length of record available due to the very strong influence of the biennial cycle. (Author)

Descriptors :   *WIND, HARMONIC ANALYSIS, PERIODIC VARIATIONS, STATISTICAL ANALYSIS, STRATOSPHERE, TROPICAL REGIONS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE