Accession Number : AD0745309

Title :   Annual and Sub-Annual Effects of EUV (Extreme Ultraviolet) Heating. Volume II. Comparison with Density Observations,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Ching,Barbara K. ; Chiu,Yam T.

Report Date : 15 APR 1972

Pagination or Media Count : 33

Abstract : By a detailed comparison of annual and sub-annual components of extreme ultraviolet (EUV) absorption heat input with those of the Jacchia models, the authors consider the importance of EUV heating in the annual and sub-annual variations of the upper atmosphere. When all the geometrical effects of EUV heat input have been taken into account, it is found that a remarkable correspondence exists between properties of each harmonic component of EUV heat input and Jacchia model temperature and densities. Equinoctial latitude independence of diurnal averaged annual and sub-annual components of heat input and density is proposed as a test of the significance of the EUV heat input. The Jacchia model is found to satisfy this test rigorously. (Author)

Descriptors :   (*UPPER ATMOSPHERE, HEATING), ABSORPTION, ULTRAVIOLET RADIATION, FOURIER ANALYSIS, DENSITY, SOLAR RADIATION

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE