Experimental radiosonde for the investigation of the water vapor in the stratosphere
Following a short discussion of the limitations of the various types of balloon-borne radiosondes when used to gather information in the stratosphere, an analysis of the reasons for these limitations and some means for circumventing them are presented. It is shown that the choice of sensing element, or transducer, for temperature measurement is rather arbitrary so long as the element possesses a small lag coefficient and high albedo. For pressure measurement it is shown that a nonlinear transducer, such as the hypsometer, with a sensitivity which increases at low pressure, is essential. For humidity measurement, only the condensation (dew point) technique is capable of giving meaningful data at great heights. The balance of the paper describes in detail a complete sounding instrument consisting of a hypsometer, a fine-wire thermo junction, and a fully automatic electronic dew-point hygrometer, together with the necessary amplifier radio telemetering equipment, and internal calibration standard. The telemetering system is of special interest due to the relatively great accuracy obtainable with a very simple arrangement of components, utilizing only a modified Diamond-Hinman radiosonde.
- Research Organization:
- Chicago Univ., IL (United States). Dept. of Meteorology
- OSTI ID:
- 217957
- Report Number(s):
- AD-A-301255/6/XAB; CNN: Contract N6ORI-20; TRN: 60780606
- Resource Relation:
- Other Information: PBD: Jun 1952
- Country of Publication:
- United States
- Language:
- English
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