Accession Number : AD0699801

Title :   CIRCULATION IN THE EQUATORIAL MESOSPHERE IN WINTER,

Corporate Author : ATMOSPHERIC SCIENCES LAB WHITE SANDS MISSILE RANGE N MEX

Personal Author(s) : Miers,B. T. ; Morris,J. E.

Report Date : NOV 1969

Pagination or Media Count : 26

Abstract : Winds observed in the equatorial mesosphere (60-85 km) during December 1968 at Barbados and January 1969 at Colon, Panama are presented. The data were obtained with the high energy Loki system and gun-launched projectiles which expelled radar-reflective, 0.001 inch diameter glass chaff near an apogee of 85 km. Mean meridional profiles were generally less than 15 m/sec with an extreme value of 50 m/sec. In the mean, westerly components dominated the profiles at both stations, with a maximum of approximately 60 m/sec near 70 km over Panama and 40 m/sec in the 65 km region over Barbados. Zonal wind speeds near 70 km over Panama were about 60 m/sec greater than indicated by previous studies. Mesospheric wind profiles in tropical regions were shown to be influenced by synoptic weather patterns and the diurnal tides. There was evidence that the winter hemispheric westerlies extend into the summer hemisphere at 60 km altitude. (Author)

Descriptors :   (*ATMOSPHERIC MOTION, PERIODIC VARIATIONS), ATMOSPHERIC SOUNDING, MESOSPHERE, RADAR REFLECTIONS, WEATHER STATIONS, PANAMA, WEST INDIES

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE