Space‐borne H 2 O observations in the Arctic stratosphere and mesosphere in the spring of 1992
1996; American Geophysical Union; Volume: 23; Issue: 17 Linguagem: Inglês
10.1029/96gl01571
ISSN1944-8007
AutoresC. P. Aellig, Julio T. Bacmeister, R. M. Bevilacqua, Mark Daehler, David L. Kriebel, T. Pauls, D. E. Siskind, Niklaus Kämpfer, J. Langen, Gelvam A. Hartmann, Aaron Berg, Jun-Ho Park, James M. Russell,
Tópico(s)Solar and Space Plasma Dynamics
ResumoWe 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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