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Research aircraft observations of the mesoscale and microscale structure of a cold front over the eastern Pacific OceanThe structure of an oceanic cold front is described on the basis of research aircraft observations taken during the Ocean Storms field experiment. Synoptic and mesoscale analyses compare the structure of an upper-level jet-front system observed slightly downstream from the wind speed maximum to its structure in the upstream entrance region. Stratospheric potential vorticity and ozone were found within the frontal zone down to about 800 mb. Microscale analyses of the front near the sea surface were carried out for a portion of the front having the signature of a 'rope' cloud in satellite imagery. A narrow (less than 1 km) zone of upward motion (about 4 m/s) and of horizontal shear (about 0.01/s) characterized the front near the surface. Significant alongfront variability was found, including lateral displacements in the frontal zone where there were weaker updrafts.
Document ID
19920036672
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bond, Nicholas A.
(Washington, University Seattle, United States)
Shapiro, M. A.
(NOAA, Wave Propagation Laboratory, Boulder CO, United States)
Date Acquired
August 15, 2013
Publication Date
December 1, 1991
Publication Information
Publication: Monthly Weather Review
Volume: 119
ISSN: 0027-0644
Subject Category
Meteorology And Climatology
Accession Number
92A19296
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-16231
Distribution Limits
Public
Copyright
Other

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