Accession Number:

AD0608503

Title:

ALPHA RADIATION HYGROMETER. VOLUME III: CURRENT PROBLEMS IN STRATOSPHERIC WATERVAPOR MEASUREMENTS MADE WITH AUTOMATIC FROST-POINT HYGROMETERS.

Descriptive Note:

Final rept. for 1 Jan 63-15 Jul 64,

Corporate Author:

HONEYWELL INC PHILADELPHIA PA

Report Date:

1964-08-15

Pagination or Media Count:

33.0

Abstract:

Two basic problems inherent in the stratospheric application f all automatic frost-point hygrometers are examined. In particular, instrument inadequacy due to low rates of mass transfer is found to be a highly probable explanation of the current controversy about upperatmosphere water-vapor content. The second problem is that of contamination of the moist-air sample by water vapor desorbed from the instrument package and vehicle. The magnitude of this effect precludes a simple accommodation of low mass transfer rates by use of long sampling times. Measures to increase the reliability of future stratospheric data are recommended. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE