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Notes on upper air hygrometry.—II. On The Humidity in the Stratosphere

✍ Scribed by G. M. B. Dobson; Dr.-Ing. E. Gluckauf

Publisher
John Wiley and Sons
Year
1945
Tongue
English
Weight
262 KB
Volume
71
Category
Article
ISSN
0035-9009

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✦ Synopsis

Abstract

The meteorograph records of the almost daily ascents over England during the months of April, 1939, and September, 1930, have been evaluated according to a method described in an earlier paper. (Q.J. 70, 1944, p. 293).

The humidities so obtained indicate (1) that supersaturation with respect to ice is very frequently found in the upper troposphere; (2) that, within the stratosphere, dry air of a humidity mixing ratio of about 10^−5^ sometimes does occur, which can only be explained as tropical stratosphere air; (3) that, on one occasion, very dry air from the stratosphere appears to have been drawn into the uppermost regions of the troposphere.

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## Abstract A method is described for calculating the relative humidity from the data obtainable from balloon hair hygrograph records under conditions in which the hair does not reach equilibrium with its surroundings. Based on and checked by means of laboratory measurements, the method gives consi