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

Ching, Barbara K.; Chiu, Yam T.

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

Active / Technical Report | Accession Number: AD0745309 |

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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

Author(s):

Ching, Barbara K. ; Chiu, Yam T.

Author Organization(s):

AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Supplementary Note:

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:

Approved For Public Release

RECORD

Collection: TR

Identifying Numbers

Report Number(s):

TR-0172(2260-10)-9-Vol-2, SAMSO-TR-72-116-Vol-2

Contract/Grant Number(s):

F04701-71-C-0172

Monitor Series:

TR-72-116-Vol-2

Subject Terms

Communities of Interest:

No COI(s) Identified

Descriptor(s):

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

Field(s)/Group(s):

Atmospheric Physics

Keyword(s):

*ATMOSPHERIC HEATING, ATMOSPHERIC DENSITY, SEASONAL VARIATIONS, SOLAR HEATING, *THERMOSPHERE

Report Date:

1972 Apr 15