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Stratospheric water vapor measurements during CHEOPS‐3
Author(s) -
Ovarlez Joëlle
Publication year - 1991
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 - 10.1029/91gl00020
Subject(s) - mixing ratio , hygrometer , water vapor , atmospheric sciences , environmental science , frost (temperature) , stratosphere , forcing (mathematics) , humidity , meteorology , geology , physics
During January 1990, in situ stratospheric water vapor measurements were performed over the Arctic during the CHEOPS experiment at Kiruna. The instrument used is a balloon‐borne frost‐point hygrometer. Results of two flights are shown: one of the flights showed thermal structure indicative of cooling induced by orographic forcing and favourable to PSC formation. Mixing ratio were the same for the two flights, 4–5 ppmv between 12 and 22 km. However, above 22 km, an increase in mixing ratio to 7.5 ppmv is observed. Because this increase is much higher than at mid‐latitudes, we examine it in detail.