Accession Number:

ADA063761

Title:

Spectral Radiance of Snow and Clouds in the Near Infrared Spectral Region

Descriptive Note:

Final rept.

Corporate Author:

AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA

Personal Author(s):

Report Date:

1978-11-17

Pagination or Media Count:

46.0

Abstract:

The near infrared spectral radiance measurements of snow and cirrus and cumulus cloud backgrounds taken by the Air Force Geophysics Laboratorys flying laboratory are evaluated. From the analysis of the 124 specra obtained, the spectral radiances or reflectance characteristics of snow and cirrus and cumulus clouds between 5500 and 7000cm 1.82-1.43 micrometers were determined. Snowcloud discrimination can be made by utilizing a sensor in the 5500 to 7000 cm spectral region. Based on the analysis of these data, certain snowcloud design parameters were identified that is, slope of the spectral radiance, absolute spectral andor total radiance, and the location and value of the maximum spectral radiance for the snow and cirrus and cumulus cloud backgrounds. Finally, specific recommendations are made for an optimal operational snowcloud discrimination radiometer. Author

Subject Categories:

  • Meteorology
  • Snow, Ice and Permafrost
  • Infrared Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE