Space‐borne H 2 O observations in the Arctic stratosphere and mesosphere in the spring of 1992
We report on stratospheric and mesospheric water vapor (H 2 O) observations obtained by the Millimeter wave Atmospheric Sounder (MAS) in the Arctic spring of 1992. In the lower stratosphere, the observations show enhanced H 2 O inside the vortex between 450 K and 625 K, in agreement with other H 2 O...
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Published in | Geophysical research letters Vol. 23; no. 17; pp. 2325 - 2328 |
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Main Authors | , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
15.08.1996
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Online Access | Get full text |
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Summary: | We report on stratospheric and mesospheric water vapor (H
2
O) observations obtained by the Millimeter wave Atmospheric Sounder (MAS) in the Arctic spring of 1992. In the lower stratosphere, the observations show enhanced H
2
O inside the vortex between 450 K and 625 K, in agreement with other H
2
O observations. In the upper stratosphere and lower mesosphere, at potential temperatures between 1850 K and 2200 K, we find regions of depressed H
2
O volume mixing ratio coincident with remnants of high potential vorticity. The depressed mesospheric H
2
O, as well as the enhanced lower stratospheric H
2
O, are consistent with wintertime descent. It also suggests effective containment of air up into the lower mesosphere. |
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ISSN: | 0094-8276 1944-8007 |
DOI: | 10.1029/96GL01571 |