Uv background calculations: Rayleigh-scattered and dayglow backgrounds from 1200 to 3000 a. Technical report, January-April 1988

Technical Report · Wed Aug 24 04:00:00 EDT 1988

OSTI ID:6348148

Strickland, D J; Barnes, R P; Anderson, D E

Dayglow and Rayleigh scattered sunlight for any satellite altitude and look direction is examined. Spectra may be generated from EUV to near IR wavelengths. Integrations may be formed over wavelength and look angle (for field-of-view averaging) for direct comparison with observations. Limb profiles are presented in 100 A bands from 1400 to 3000 A in units of mega Rayleighs/A and micro Watts/sq cm/sr. These profiles combine dayglow and Rayleigh-scattered sunlight and show how the brightness varies over the tangent altitude range 300 to 0 km. Dayglow results are presented for high and low solar activity. There can be more than an order of magnitude variation in dayglow brightness at tangent altitudes above 200 km from low to high activity. Limb profiles of Rayleigh-scattered sunlight showing the effect of changing the sun's azimuth are also presented. For a chosen solar zenith angle of 60, variations of more than 50% occur as the sun's azimuth changes from 0 to 90/sup 0/.

• Research Organization: Computational Physics, Inc., Annandale, VA (USA)
• OSTI ID: 6348148
• Report Number(s): AD-A-201118/7/XAB; SCIENTIFIC-1
• Country of Publication: United States
• Language: English

Related Subjects

640104 -- Astrophysics & Cosmology-- Solar Phenomena
640201* -- Atmospheric Physics-- Auroral
Ionospheric
& Magetospheric Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIRGLOW
ALTITUDE
BACKGROUND RADIATION
COHERENT SCATTERING
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
PROGRESS REPORT
RADIATIONS
RAYLEIGH SCATTERING
SCATTERING
SOLAR ACTIVITY
SOLAR RADIATION
STELLAR RADIATION
ULTRAVIOLET RADIATION