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