Accession Number : AD0679024

Title :   THE SYNOPTIC EVENTS OF THE STRATOSPHERIC WARMING OF DECEMBER 1967-JANUARY 1968,

Corporate Author : ATMOSPHERIC SCIENCES RESEARCH OFFICE WHITE SANDS MISSILE RANGE N MEX

Personal Author(s) : Williams,Ben H. ; Miers,Bruce T.

Report Date : SEP 1968

Pagination or Media Count : 51

Abstract : Large-scale synoptic changes associated with the major midwinter stratospheric warming of December 1967 - January 1968 are described. Constant altitude maps at 40 and 50 km that were derived primarily from meteorological rocket data are presented. Mean temperature maps for the atmospheric layer between 40 and 50 km were constructed from the pressure and wind distributions of the constant height charts and the hypsometric formula. The synoptic events illustrated in this paper have demonstrated that warm air was observed at high latitudes in the upper stratosphere prior to any other indication of a stratospheric warming; stratospheric circulation changes associated with the major warming began several days after the warm air was first observed; the stratosphere was baroclinically unstable during the warming; the largest temperature changes occurred near 30 km and amounted to as much as 70C; the meridional temperature gradients indicated the passage of warm air to the north of the midlatitude meteorological rocket stations; and retrogression of the Aleutian High occurred. (Author)

Descriptors :   (*ATMOSPHERIC MOTION, STRATOSPHERE), THERMAL CONDUCTIVITY, UPPER ATMOSPHERE, METEOROLOGICAL PHENOMENA, GUIDED MISSILE RANGES, WIND, DISTRIBUTION, ATMOSPHERIC TEMPERATURE, METEOROLOGICAL CHARTS, TROPOSPHERE, EARLY WARNING SYSTEMS, TROPICAL CYCLONES, SOUNDING ROCKETS, NEW MEXICO

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE