PASSIVE MICROWAVE MEASUREMENTS OF SNOW.
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 1/2 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 15, 1965
- Accession Number
- AD0627667
Entities
People
- J. M. Kennedy
- J. S. Ross
- R. M. Mandl
- R. T. Sakamoto
- W. B. Ricketts