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contributor authorMass, Clifford F.
contributor authorBusinger, Steve
contributor authorAlbright, Mark D.
contributor authorTucker, Zena A.
date accessioned2017-06-09T16:10:17Z
date available2017-06-09T16:10:17Z
date copyright1995/02/01
date issued1995
identifier issn0027-0644
identifier otherams-62521.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4203422
description abstractThis paper describes a localized windstorm that struck some areas of northwest Washington State on 28 December 1990 with winds exceeding 45 m s?1, resulting in extensive property damage, treefalls, and power outages. Arctic air, originating within the interior of British Columbia, descended into a mesoscale gap in the Coast/Cascade Mountains and then accelerated ageostrophically to the west. This gap acceleration is explained quantitatively by a three-way balance among the pressure gradient force, friction, and inertia. The flow maintained its integrity as a narrow current of high-speed air as it exited the gap and subsequently accelerated over water. Troughing in the lee of the Cascade Mountains enhanced the horizontal pressure gradient over northwest Washington; this pressure gradient approximately balanced frictional drag resulting in only minimal acceleration. Farther south the flow decelerated as the current spread out horizontally.
publisherAmerican Meteorological Society
titleA Windstorm in the Lee of a Gap in a Coastal Mountain Barrier
typeJournal Paper
journal volume123
journal issue2
journal titleMonthly Weather Review
identifier doi10.1175/1520-0493(1995)123<0315:AWITLO>2.0.CO;2
journal fristpage315
journal lastpage331
treeMonthly Weather Review:;1995:;volume( 123 ):;issue: 002
contenttypeFulltext


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