Accession Number : AD0446732

Title :   DIURNAL VARIATION OOF THE ATMOSPHERE AROUND 190 KILOMETERS DERIVED FROM SOLAR EXTREME ULTRAVIOLET ABSORPTION MEASUREMENTS,

Descriptive Note : Environmental research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS HANSCOM AFB MA

Personal Author(s) : Hall, L. A. ; Schweizer, W. ; Hinteregger, H. E.

Report Date : 31 JUL 1963

Pagination or Media Count : 1

Abstract : The atmospheric attenuation of solar extreme ultraviolet radiation in early morning, June 1962, and late afternoon, October 1962, has been measured. The derived atmospheric composition change in the 170- to 210-km region is interpreted mainly as a diurnal effect. The molecular nitrogen concentration is seen to change but little, while the molecular oxygen concentration decreases by about twenty per cent and the atomic oxygen concentration increases by a factor of about 2 in the afternoon. (Author)

Descriptors :   (*ATMOSPHERES, DIURNAL VARIATIONS), (*ABSORPTION SPECTRA, ATMOSPHERES), (*ULTRAVIOLET SPECTRA, DIURNAL VARIATIONS), (*ULTRAVIOLET RADIATION, ATTENUATION), NITROGEN, OXYGEN, ATMOSPHERE MODELS, ATMOSPHERIC SOUNDING.

Distribution Statement : APPROVED FOR PUBLIC RELEASE