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    Observations of Mesoscale Effects on Frontal Movement Through an Urban Area

    Source: Monthly Weather Review:;1977:;volume( 105 ):;issue: 005::page 563
    Author:
    Loose, Tim
    ,
    Bornstein, Robert D.
    DOI: 10.1175/1520-0493(1977)105<0563:OOMEOF>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Data obtained from the extensive mesoscale anemometer network established during the New York University Urban Air Polution Dynamics Program were used to study the effects of New York City on frontal movement. Frontal position and movement were determined using sequential hourly streamline and isotach analyses of the flow through the New York City metropolitan area. Results showed that frontal movement during nonheat-island periods was retarded significantly over the entire central urban area. The retardation was probably due to the increased surface frictional drag exerted on the front by the increased surface roughness of the city as compared to that of its surrounding environs. During periods with well-developed urban heat islands, the results showed a retardation in frontal speed over the upwind half of the city, followed by a significant acceleration of the front over its downwind half.
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      Observations of Mesoscale Effects on Frontal Movement Through an Urban Area

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4199633
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    contributor authorLoose, Tim
    contributor authorBornstein, Robert D.
    date accessioned2017-06-09T16:01:36Z
    date available2017-06-09T16:01:36Z
    date copyright1977/05/01
    date issued1977
    identifier issn0027-0644
    identifier otherams-59111.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4199633
    description abstractData obtained from the extensive mesoscale anemometer network established during the New York University Urban Air Polution Dynamics Program were used to study the effects of New York City on frontal movement. Frontal position and movement were determined using sequential hourly streamline and isotach analyses of the flow through the New York City metropolitan area. Results showed that frontal movement during nonheat-island periods was retarded significantly over the entire central urban area. The retardation was probably due to the increased surface frictional drag exerted on the front by the increased surface roughness of the city as compared to that of its surrounding environs. During periods with well-developed urban heat islands, the results showed a retardation in frontal speed over the upwind half of the city, followed by a significant acceleration of the front over its downwind half.
    publisherAmerican Meteorological Society
    titleObservations of Mesoscale Effects on Frontal Movement Through an Urban Area
    typeJournal Paper
    journal volume105
    journal issue5
    journal titleMonthly Weather Review
    identifier doi10.1175/1520-0493(1977)105<0563:OOMEOF>2.0.CO;2
    journal fristpage563
    journal lastpage571
    treeMonthly Weather Review:;1977:;volume( 105 ):;issue: 005
    contenttypeFulltext
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