Accession Number:

AD0699801

Title:

CIRCULATION IN THE EQUATORIAL MESOSPHERE IN WINTER,

Descriptive Note:

Corporate Author:

ATMOSPHERIC SCIENCES LAB WHITE SANDS MISSILE RANGE N MEX

Personal Author(s):

Report Date:

1969-11-01

Pagination or Media Count:

26.0

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 msec with an extreme value of 50 msec. In the mean, westerly components dominated the profiles at both stations, with a maximum of approximately 60 msec near 70 km over Panama and 40 msec in the 65 km region over Barbados. Zonal wind speeds near 70 km over Panama were about 60 msec 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

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE