The Influence of Mesoscale Features of the Sea Surface Temperature Distribution on Marine Boundary Layer Winds off the Scotian Shelf during the Superstorm of March 1993Source: Monthly Weather Review:;1998:;volume( 126 ):;issue: 011::page 2793DOI: 10.1175/1520-0493(1998)126<2793:TIOMFO>2.0.CO;2Publisher: American Meteorological Society
Abstract: This paper studies the mesoscale wind field during the blizzard of March 1993 off the east coast of North America and examines the influence of the sea surface temperature distribution on surface winds. Can the Gulf Stream and its meanders, by its strong influence on the marine boundary layer, generate mesoscale features in the wind field? Numerical simulations of the storm are carried out using the MC2, a fully elastic nonhydrostatic model. Simulations are conducted at different resolutions (50, 25, 10, 5, and 2 km) with both detailed and smoothed SST fields, so as to examine the influence of these parameters on the marine boundary layer winds. Results from these numerical simulations are compared with surface observations from buoys. The study reveals some mesoscale features in the wind field caused by the Gulf Stream?s meanders and the warm eddies of the SST field. In a stable boundary layer, the meanders shaped a 50?55-kt (26?28 m s?1) band of winds in a general 40?45-kt (21?23 m s?1) wind field. Behind the cold front, local enhancements of 10-kt (5 m s?1) winds were found over the warm water eddies in the unstable boundary layer.
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contributor author | Desjardins, Serge | |
contributor author | Benoit, Robert | |
contributor author | Swail, Val | |
date accessioned | 2017-06-09T16:12:08Z | |
date available | 2017-06-09T16:12:08Z | |
date copyright | 1998/11/01 | |
date issued | 1998 | |
identifier issn | 0027-0644 | |
identifier other | ams-63195.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4204171 | |
description abstract | This paper studies the mesoscale wind field during the blizzard of March 1993 off the east coast of North America and examines the influence of the sea surface temperature distribution on surface winds. Can the Gulf Stream and its meanders, by its strong influence on the marine boundary layer, generate mesoscale features in the wind field? Numerical simulations of the storm are carried out using the MC2, a fully elastic nonhydrostatic model. Simulations are conducted at different resolutions (50, 25, 10, 5, and 2 km) with both detailed and smoothed SST fields, so as to examine the influence of these parameters on the marine boundary layer winds. Results from these numerical simulations are compared with surface observations from buoys. The study reveals some mesoscale features in the wind field caused by the Gulf Stream?s meanders and the warm eddies of the SST field. In a stable boundary layer, the meanders shaped a 50?55-kt (26?28 m s?1) band of winds in a general 40?45-kt (21?23 m s?1) wind field. Behind the cold front, local enhancements of 10-kt (5 m s?1) winds were found over the warm water eddies in the unstable boundary layer. | |
publisher | American Meteorological Society | |
title | The Influence of Mesoscale Features of the Sea Surface Temperature Distribution on Marine Boundary Layer Winds off the Scotian Shelf during the Superstorm of March 1993 | |
type | Journal Paper | |
journal volume | 126 | |
journal issue | 11 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/1520-0493(1998)126<2793:TIOMFO>2.0.CO;2 | |
journal fristpage | 2793 | |
journal lastpage | 2808 | |
tree | Monthly Weather Review:;1998:;volume( 126 ):;issue: 011 | |
contenttype | Fulltext |