Accession Number : AD0635523

Title :   CIRCULATION OF THE MIDDLE AND UPPER ATMOSPHERE.

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

Personal Author(s) : Webb, Willis L.

Report Date : 1966

Pagination or Media Count : 22

Abstract : Investigation of the Stratospheric Circulation through Meteorological Rocket Network observations has revealed the presence of a complex circulation system in the upper atmosphere. Detail structure range in scale from the hemispheric-annual monsoonal reversal which is a dominant feature of the stratospheric circulation (25-80 km) down to subkilometer-minutes variations characteristic of vertical profiles. A most important aspect of the stratospheric circulation is the strong diurnal temperature variation and resultant tidal circulation generated by the earth's rotation and ozone absorption of solar ultraviolet in a thin stratopause layer. This diurnal heat wave and tidal circulation has been shown to effectively stir the mesosphere and to provide special vertical motions such as those required to support noctilucent cloud particles and subsidence of the equatorial electrojet. Associated data has shown that the ionospheric and stratospheric circulation systems are not fully isolated, but are indeed interrelated, with a principal difference being a more active meridional global circulation in the ionospheric case. This difference is assumed to be due to an increasing importance with height of non-geostrophic influences on the circulation of the upper atmosphere. (Author)

Descriptors :   (*ATMOSPHERIC MOTION, DYNAMICS), SOUNDING ROCKETS, ATMOSPHERIC SOUNDING, METEOROLOGICAL PHENOMENA, ATMOSPHERES, FLUID MECHANICS

Subject Categories : Atmospheric Physics
      Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE