Accession Number : AD0261713

Title :   WIND VARIABILITY IN THE MESOSPHERE AS DETERMINED BY THE TRACKING OF FALLING OBJECTS. AN EVALUATION AND PRELIMINARY RESULTS

Descriptive Note : Final rept.,

Corporate Author : NEW YORK UNIV N Y SCHOOL OF ENGINEERING AND SCIENCE

Personal Author(s) : BRUCH,ALVAN ; MORGAN,GRIFFITH M. JR.

Report Date : MAY 1961

Pagination or Media Count : 113

Abstract : OBSERVATIONS OF WINDS IN THE MESOSPHERE, OBTAINED BY RADAR TRACKING OF TARGETS, ARE ANALYZED TO GIVE MONTHLY AND SEASONAL MEAN VALUES AT VARIOUS ALTITUDES AT EACH OBSERVATION STATION, SEASONAL STANDARD DEVIATIONS OF THE MEAN, ROOT-MEAN-SQUARE AVERAGES OF WIND CHANGE AT A FIXED POINT IN SELECTED TIME INTERVALS, THE FIRST HARMONIC OF THE ANNUAL MARCH OF THE EAST-WEST COMPONENT, FREQUENCY DISTRIBUTIONS OF VERTICAL WIND SHEARS, AND ESTIMATES OF VERTICAL VELOCITIES. The experimental design of the observations is discussed at length and error and bias are estimated. Although the mean values show consistency, the standard deviations show low statistical significance. Evidence is found casting some doubt on the accuracy of observations where chaff is the radar target. (Author)

Descriptors :   *PERIODIC VARIATIONS, *RADAR TRACKING, *WIND, FALLING BODIES, HARMONIC ANALYSIS, METEOROLOGY, PARACHUTES, RADAR CONFUSION REFLECTORS, RADAR TARGETS, UPPER ATMOSPHERE, WIND DIRECTION INDICATORS

Distribution Statement : APPROVED FOR PUBLIC RELEASE