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The synoptic setting and possible energy sources for mesoscale wave disturbancesPublished data on 13 cases of mesoscale wave disturbances and their environment were examined to isolate common features for these cases and to determine possible energy sources for the waves. These events are characterized by either a singular wave of depression or wave packets with periods of 1-4 h, horizontal wavelengths of 50-500 km, and surface-pressure perturbation amplitudes of 0.2-7.0 mb. These wave events are shown to be associated with a distinct synoptic pattern (including the existence of a strong inversion in the lower troposphere and the propagation of a jet streak toward a ridge axis in the upper troposphere) while displaying little correlation with the presence of convective storm cells. The observed development of the waves is consistent with the hypothesis that the energy source needed to initiate and sustain the wave disturbances may be related to a geostrophic adjustment process associated with upper-tropospheric jet streaks.
Document ID
19870054213
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Uccellini, Louis W.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Koch, Steven E.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 13, 2013
Publication Date
March 1, 1987
Publication Information
Publication: Monthly Weather Review
Volume: 115
ISSN: 0027-0644
Subject Category
Meteorology And Climatology
Accession Number
87A41487
Distribution Limits
Public
Copyright
Other

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