Atmospheric Radiance Models for Limb-Viewing Geometry in the Five to Twenty-Five-Micron Spectral Region
Abstract
The infrared radiance arising from the earth's limb for altitudes from sea level to 500 kilometers and within the spectral limits of 5 to 25 microns was determined from theoretical calculations. The atmosphere was divided into two altitude regimes: the lower atmosphere (below 70 kilometers) and the upper atmosphere (above 70 kilometers). The lower limb models were developed from the University of Michigan computer program with modifications, including the addition of a model for nitric acid. Spectral radiances were determined as a function of geometrical, geographical, and temporal parameters. Emphasis was placed on developing limb radiance models for the upper atmosphere, including identification of active molecular species in the infrared, the specification of their abundances, and their wavelengths of emission. In addition, particulate material sources, including infrared radiation arising from dust particles and noctilucent clouds, and uncertainties in atmospheric parameters, were considered.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1970
- Accession Number
- AD0868194
Entities
People
- Alexander Dalgarno
- Fred B. House
- Pedro Lilienfeld
- Thomas C. Deggs
- Victor L. Corbin
Organizations
- Honeywell International, Inc.