Accession Number : AD0483101

Title :   GROUND-BASED PASSIVE PROBING IN THE MICROWAVE REGION.

Descriptive Note : Final rept.,

Corporate Author : INSTITUTE FOR TELECOMMUNICATION SCIENCES AND AERONOMY BOULDER CO

Personal Author(s) : Westwater, E. R. ; Strand, O. N. ; Abbott, R. L.

Report Date : MAR 1966

Pagination or Media Count : 85

Abstract : Ground-based determination of the temperature distribution of the troposphere from microwave measurements of oxygen emission spectra is discussed. Microwave absorption by oxygen and water vapor is reviewed, and least-squares determination of line-width parameters from absorption data is presented. Brightness temperature calculations from perturbed temperature profiles are given to show frequency regions of maximum sensitivity to temperature profiles. Least-squares inversion by low order polynomials is presented for several types of temperature profiles. Inversion by inversequadrature using a modified method of Twomey is discussed. Finally, calculations of brightness temperatures in the vicinity of the 183 Gc/s water vapor line are presented. (Author)

Descriptors :   *ATMOSPHERIC SOUNDING), (*TROPOSPHERE, (*ATMOSPHERIC TEMPERATURE, TROPOSPHERE), ELECTROMAGNETIC RADIATION, MEASUREMENT, EMISSIVITY, OXYGEN, ABSORPTION SPECTRA, LEAST SQUARES METHOD, EQUATIONS, WATER VAPOR, DISTRIBUTION, HEAT TRANSFER, MATHEMATICAL ANALYSIS, FUNCTIONS(MATHEMATICS), POLYNOMIALS, PROBES, HUMIDITY, SKY BRIGHTNESS, AIR MASS ANALYSIS, MICROWAVE FREQUENCY, MICROWAVES.

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE