NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Air mass origins and troposphere-to-stratosphere exchange associated with mid-latitude cyclogenesis and tropopause folding inferred from Be-7 measurementsThe 1984 extratropical mission of NASA's Stratosphere-Troposphere Exchange Project (STEP) studied cross-jet transport in regions of cyclogenesis and tropopause folding. Correlations of Be-7, ozone, water vapor, and potential vorticity measured on a NASA U-2 research aircraft flying in high shear regions above the jet core are indicative of mixing between the cyclonic and the anticyclonic sides of the jet and are consistent with the hypothesis that small-scale entrainments of upper tropospheric air into the lower stratosphere during cyclogenesis are important in maintaining the vertical gradients of Be-7, ozone, water vapor and other trace constituents in the lower few kilometers of the midlatitude stratosphere. Correlations between Be-7, and ozone suggest a lower tropical stratospheric origin for the ozone-poor lamina observed above the jet core.
Document ID
19910069804
Document Type
Reprint (Version printed in journal)
Authors
Kritz, Mark A. (State Univ. of New York Albany, NY, United States)
Rosner, Stefan W. (New York, State University Albany, United States)
Danielsen, Edwin F. (State Univ. of New York Albany, NY, United States)
Selkirk, Henry B. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 14, 2013
Publication Date
September 20, 1991
Publication Information
Publication: Journal of Geophysical Research
Volume: 96
ISSN: 0148-0227
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: NCC2-502
CONTRACT_GRANT: NAG2-277
Distribution Limits
Public
Copyright
Other