PASSIVE MICROWAVE MEASUREMENTS OF SNOW.

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Abstract:

A field measurements program, sponsored by the Office of Naval Research, was commenced on 2 May 1965 at Crater Lake, Oregon. The prime purpose of this program was to obtain radiometric data from snow covered ground at 13.5 Gc, 37 Gc, and 94 Gc. The microwave radiometric temperatures were recorded for both horizontal and vertical polarization on flat snow courses with snow depths from 12 inch to 180 inches. Various geophysical measurements such as free air temperature, subsurface temperatures, density, free water content, and meterological measurements were also made to determine their relations to passive microwave emmissions. Different microwave frequencies do not behave in the same manner with varying moisture content. This is believed to be due to the frequency dispersive property of water in the microwave region. Author

Author(s):
Kennedy, J. M. ; Sakamoto, R. T. ; Ricketts, W. B. ; Ross, J. S. ; Mandl, R. M.
Author Organization(s):
SPACE-GENERAL CORP EL MONTE CALIF
Descriptive Note:
Technical rept. no. 1, 4 Jan-1 Sep 65,
Annotation:
Passive microwave measurements of snow.
Pagination:
0251

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
SGC-829R-3
Contract/Grant Number(s):
Nonr-4767(00)
Project Number(s):
NR-387-033
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*SNOW, RADIOMETERS, MEASUREMENT, THERMAL RADIATION, PASSIVE SYSTEMS, GEOPHYSICS
Field(s)/Group(s):
Meteorology, Snow, Ice and Permafrost
Report Date:
1965 Dec 15