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Mesoscale generation of available potential energy in the warm sector of an extratropical cycloneThe generation of available potential energy (APE) was evaluated in the warm sector of an extratropical cyclone containing intense convective activity. Mesoscale rawinsonde data from AVE-SESAME '79 was employed. Parametrization techniques were used for latent and sensible heating components, and variations for the Kuo scheme provided convective latent heat release. Radiative transfer models were used to obtain estimates of infrared and solar processes. The results indicated that solar heating was greater than IR cooling near midday. An extensive low-level cloud deck was the most radiatively active area. Negative generation of APE occurred during most of the period for the SESAME domain as a whole. The leading contributor was convective latent heating located primarily in regions of negative efficiency. Infrared cooling was the only component to consistently produce positive generation. Sensible heating provided an important sink of APE in the low levels during the afternoon.
Document ID
19850061959
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fuelberg, H. E.
(Saint Louis Univ. MO, United States)
Ruminski, M. G.
(Saint Louis Univ. MO, United States)
Starr, D. OC.
(Saint Louis University St. Louis, MO, United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1985
Publication Information
Publication: Monthly Weather Review
Volume: 113
ISSN: 0027-0644
Subject Category
Meteorology And Climatology
Accession Number
85A44110
Funding Number(s)
CONTRACT_GRANT: NAS8-33370
Distribution Limits
Public
Copyright
Other

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