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Vertical distribution of H 2 O in the stratosphere as determined by UV fluorescence in‐situ measurements
Author(s) -
Bertaux JeanLoup,
Delannoy Alain
Publication year - 1978
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl005i012p01017
Subject(s) - stratosphere , troposphere , mixing ratio , in situ , altitude (triangle) , fluorescence , atmospheric sciences , mixing (physics) , environmental science , calibration , materials science , remote sensing , analytical chemistry (journal) , optics , physics , chemistry , geology , meteorology , environmental chemistry , geometry , mathematics , quantum mechanics
The stratospheric H 2 O mixing ratio profile in the 10‐24 km altitude range is derived from in‐situ measurements, using a new technique: OH fluorescence produced when H 2 O molecules are photodissociated by a V.U.V. light source. The flight instrument and its calibration are described in some details. A decrease of the mixing ratio is observed below 24 km, down to 21 km. The stratospheres‐troposphere transition shows vertical structure.