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    Transport of a Power Plant Tracer Plume over Grand Canyon National Park

    Source: Journal of Applied Meteorology:;1999:;volume( 038 ):;issue: 008::page 1049
    Author:
    Chen, Jun
    ,
    Bornstein, Robert
    ,
    Lindsey, Charles G.
    DOI: 10.1175/1520-0450(1999)038<1049:TOAPPT>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Meteorological and air-quality data, as well as surface tracer concentration values, were collected during 1990 to assess the impacts of Navajo Generating Station (NGS) emissions on Grand Canyon National Park (GCNP) air quality. These data have been used in the present investigation to determine between direct and indirect transport routes taken by the NGS plume to produce measured high-tracer concentration events at GCNP. The meteorological data were used as input into a three-dimensional mass-consistent wind model, whose output was used as input into a horizontal forward-trajectory model. Calculated polluted air locations were compared with observed surface-tracer concentration values. Results show that complex-terrain features affect local wind-flow patterns during winter in the Grand Canyon area. Local channeling, decoupled canyon winds, and slope and valley flows dominate in the region when synoptic systems are weak. Direct NGS plume transport to GCNP occurs with northeasterly plume-height winds, while indirect transport to the park is caused by wind direction shifts associated with passing synoptic systems. Calculated polluted airmass positions along the modeled streak lines match measured surface-tracer observations in both space and time.
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      Transport of a Power Plant Tracer Plume over Grand Canyon National Park

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4148121
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    • Journal of Applied Meteorology

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    contributor authorChen, Jun
    contributor authorBornstein, Robert
    contributor authorLindsey, Charles G.
    date accessioned2017-06-09T14:07:04Z
    date available2017-06-09T14:07:04Z
    date copyright1999/08/01
    date issued1999
    identifier issn0894-8763
    identifier otherams-12748.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4148121
    description abstractMeteorological and air-quality data, as well as surface tracer concentration values, were collected during 1990 to assess the impacts of Navajo Generating Station (NGS) emissions on Grand Canyon National Park (GCNP) air quality. These data have been used in the present investigation to determine between direct and indirect transport routes taken by the NGS plume to produce measured high-tracer concentration events at GCNP. The meteorological data were used as input into a three-dimensional mass-consistent wind model, whose output was used as input into a horizontal forward-trajectory model. Calculated polluted air locations were compared with observed surface-tracer concentration values. Results show that complex-terrain features affect local wind-flow patterns during winter in the Grand Canyon area. Local channeling, decoupled canyon winds, and slope and valley flows dominate in the region when synoptic systems are weak. Direct NGS plume transport to GCNP occurs with northeasterly plume-height winds, while indirect transport to the park is caused by wind direction shifts associated with passing synoptic systems. Calculated polluted airmass positions along the modeled streak lines match measured surface-tracer observations in both space and time.
    publisherAmerican Meteorological Society
    titleTransport of a Power Plant Tracer Plume over Grand Canyon National Park
    typeJournal Paper
    journal volume38
    journal issue8
    journal titleJournal of Applied Meteorology
    identifier doi10.1175/1520-0450(1999)038<1049:TOAPPT>2.0.CO;2
    journal fristpage1049
    journal lastpage1068
    treeJournal of Applied Meteorology:;1999:;volume( 038 ):;issue: 008
    contenttypeFulltext
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