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contributor authorRogers, David P.
contributor authorDorman, Clive E.
contributor authorEdwards, Kathleen A.
contributor authorBrooks, Ian M.
contributor authorMelville, W. Kendall
contributor authorBurk, Stephen D.
contributor authorThompson, William T.
contributor authorHolt, Teddy
contributor authorStröm, Linda M.
contributor authorTjernström, Michael
contributor authorGrisogono, Branko
contributor authorBane, John M.
contributor authorNuss, Wendell A.
contributor authorMorley, Bruce M.
contributor authorSchanot, Allen J.
date accessioned2017-06-09T14:42:11Z
date available2017-06-09T14:42:11Z
date copyright1998/07/01
date issued1998
identifier issn0003-0007
identifier otherams-24817.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4161531
description abstractSome of the highlights of an experiment designed to study coastal atmospheric phenomena along the California coast (Coastal Waves 1996 experiment) are described. This study was designed to address several problems, including the cross-shore variability and turbulent structure of the marine boundary layer, the influence of the coast on the development of the marine layer and clouds, the ageostrophy of the flow, the dynamics of trapped events, the parameterization of surface fluxes, and the supercriticality of the marine layer. Based in Monterey, California, the National Center for Atmospheric Research (NCAR) C-130 Hercules and the University of North Carolina Piper Seneca obtained a comprehensive set of measurements on the structure of the marine layer. The study focused on the effects of prominent topographic features on the wind. Downstream of capes and points, narrow bands of high winds are frequently encountered. The NCAR-designed Scanning Aerosol Backscatter Lidar (SABL) provided a unique opportunity to connect changes in the depth of the boundary layer with specific features in the dynamics of the flow field. An integral part of the experiment was the use of numerical models as forecast and diagnostic tools. The Naval Research Laboratory's Coupled Ocean Atmosphere Model System (COAMPS) provided high-resolution forecasts of the wind field in the vicinity of capes and points, which aided the deployment of the aircraft. Subsequently, this model and the MIUU (University of Uppsala) numerical model were used to support the analysis of the field data. These are some of the most comprehensive measurements of the topographically forced marine layer that have been collected. SABL proved to be an exceptionally useful tool to resolve the small-scale structure of the boundary layer and, combined with in situ turbulence measurements, provides new insight into the structure of the marine atmosphere. Measurements were made sufficiently far offshore to distinguish between the coastal and open ocean effects. COAMPS proved to be an excellent forecast tool and both it and the MIUU model are integral parts of the ongoing analysis. The results highlight the large spatial variability that occurs directly in response to topographic effects. Routine measurements are insufficient to resolve this variability. Numerical weather prediction model boundary conditions cannot properly define the forecast system and often underestimate the wind speed and surface wave conditions in the nearshore region. This study was a collaborative effort between the National Science Foundation, the Office of Naval Research, the Naval Research Laboratory, and the National Oceanographic and Atmospheric Administration.
publisherAmerican Meteorological Society
titleHighlights of Coastal Waves 1996
typeJournal Paper
journal volume79
journal issue7
journal titleBulletin of the American Meteorological Society
identifier doi10.1175/1520-0477(1998)079<1307:HOCW>2.0.CO;2
journal fristpage1307
journal lastpage1326
treeBulletin of the American Meteorological Society:;1998:;volume( 079 ):;issue: 007
contenttypeFulltext


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