Peculiarities in determining small contents of atmospheric moisture by surface radio thermal sounding methods
Abstract
The radiometric method for determining total moisture content Q in a vertical column of the atmosphere was developed. The method obtains data on Q in the middle latitude and tropical latitudes. A solution of this problem is remote sounding in the shorter wave range of radio waves. This is the physical basis for possible use of strong H2O submillimeter absorption lines in radio thermal sounding of the total moisture content under extremal atmospheric conditions. Total vertical absorption of radio waves in atmospheric water vapor in the neighborhood of five lines in the centimeter, millimeter and long wave parts of the submillimeter range were investigated. The analysis of absorption in the cloudless atmosphere in the resonance regions of water vapor allowed formulation of the conditions for optimum determination of moisture content in extremal situations. Regression relationships between the radio characteristics of the atmosphere in the neighborhood of the considered spectral lines and the total mass of water vapor in a column of the atmosphere and evaluations of the accuracy in determining total moisture content were obtained.
- Publication:
-
USSR Report Earth Sciences JPRS UES
- Pub Date:
- May 1984
- Bibcode:
- 1984RpESc.......73K
- Keywords:
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- Atmospheric Moisture;
- Radiometers;
- Surface Acoustic Wave Devices;
- Atmospheric Physics;
- Humidity Measurement;
- Moisture Meters;
- Sound Waves