Accession Number : AD0743445

Title :   Infrared Absorptivity of Ice Ih and Its Atmospheric Emission.

Descriptive Note : Technical rept. Jun-Nov 71,

Corporate Author : EDGEWOOD ARSENAL MD

Personal Author(s) : Carlon,Hugh R.

Report Date : MAY 1972

Pagination or Media Count : 10

Abstract : Quantitative spectra of atmospheric ice Ih are presented for 3.4 to 15 micrometers, and absorptivity coefficients for ice and liquid water at 8 to 14 micrometers are presented and compared. A modified equation modeling contributions of water in the vapor, liquid, and ice Ih phases to total atmospheric emission is presented. In the infrared 'continuum' at 8 to 14 micrometers, traces of either ice Ih or liquid water aerosol can affect radiance measurements more strongly than large concentrations of the vapor. Whereas water vapor has been studied extensively as a source of infrared emission in the atmosphere, liquid water and ice contributions have been appreciated only recently. (Author)

Descriptors :   (*WATER VAPOR, INFRARED RADIATION), (*ICE, INFRARED RADIATION), THERMAL RADIATION, BLACKBODY RADIATION, ABSORPTION SPECTRA, EMISSIVITY, AEROSOLS

Subject Categories : Meteorology
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE