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    The Improvement to the Environmental Wind and Tropical Cyclone Circulation Retrievals with the Modified GBVTD (MGBVTD) Technique

    Source: Journal of Applied Meteorology and Climatology:;2013:;volume( 052 ):;issue: 011::page 2493
    Author:
    Chen, Xiaomin
    ,
    Zhao, Kun
    ,
    Lee, Wen-Chau
    ,
    Jong-Dao Jou, Ben
    ,
    Xue, Ming
    ,
    Harasti, Paul R.
    DOI: 10.1175/JAMC-D-13-031.1
    Publisher: American Meteorological Society
    Abstract: he ground-based velocity track display (GBVTD) was developed to deduce a three-dimensional primary circulation of landfalling tropical cyclones from single-Doppler radar data. However, the cross-beam component of the mean wind cannot be resolved and is consequently aliased into the retrieved axisymmetric tangential wind . Recently, the development of the hurricane volume velocity processing method (HVVP) enabled the independent estimation of ; however, HVVP is potentially limited by the unknown accuracy of empirical assumptions used to deduce the modified Rankine-combined vortex exponent . By combing the GBVTD with HVVP techniques, this study proposes a modified GBVTD method (MGBVTD) to objectively deduce from the GBVTD technique and provide a more accurate estimation of and via an iterative procedure to reach converged and cross-beam component of solutions. MGBVTD retains the strength of both algorithms but avoids their weaknesses. The results from idealized experiments demonstrate that the MGBVTD-retrieved cross-beam component of is within 2 m s?1 of reality. MGBVTD was applied to Hurricane Bret (1999) whose inner core was captured simultaneously by two Weather Surveillance Radar-1988 Doppler (WSR-88D) instruments. The MGBVTD-retrieved cross-beam component of from single-Doppler radar data is very close to that from dual-Doppler radar synthesis using extended GBVTD (EGBVTD); their difference is less than 2 m s?1. The mean difference in the MGBVTD-retrieved from the two radars is ~2 m s?1, which is significantly smaller than that resolved in GBVTD retrievals (~5 m s?1).
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      The Improvement to the Environmental Wind and Tropical Cyclone Circulation Retrievals with the Modified GBVTD (MGBVTD) Technique

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4217232
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    • Journal of Applied Meteorology and Climatology

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    contributor authorChen, Xiaomin
    contributor authorZhao, Kun
    contributor authorLee, Wen-Chau
    contributor authorJong-Dao Jou, Ben
    contributor authorXue, Ming
    contributor authorHarasti, Paul R.
    date accessioned2017-06-09T16:49:59Z
    date available2017-06-09T16:49:59Z
    date copyright2013/11/01
    date issued2013
    identifier issn1558-8424
    identifier otherams-74951.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4217232
    description abstracthe ground-based velocity track display (GBVTD) was developed to deduce a three-dimensional primary circulation of landfalling tropical cyclones from single-Doppler radar data. However, the cross-beam component of the mean wind cannot be resolved and is consequently aliased into the retrieved axisymmetric tangential wind . Recently, the development of the hurricane volume velocity processing method (HVVP) enabled the independent estimation of ; however, HVVP is potentially limited by the unknown accuracy of empirical assumptions used to deduce the modified Rankine-combined vortex exponent . By combing the GBVTD with HVVP techniques, this study proposes a modified GBVTD method (MGBVTD) to objectively deduce from the GBVTD technique and provide a more accurate estimation of and via an iterative procedure to reach converged and cross-beam component of solutions. MGBVTD retains the strength of both algorithms but avoids their weaknesses. The results from idealized experiments demonstrate that the MGBVTD-retrieved cross-beam component of is within 2 m s?1 of reality. MGBVTD was applied to Hurricane Bret (1999) whose inner core was captured simultaneously by two Weather Surveillance Radar-1988 Doppler (WSR-88D) instruments. The MGBVTD-retrieved cross-beam component of from single-Doppler radar data is very close to that from dual-Doppler radar synthesis using extended GBVTD (EGBVTD); their difference is less than 2 m s?1. The mean difference in the MGBVTD-retrieved from the two radars is ~2 m s?1, which is significantly smaller than that resolved in GBVTD retrievals (~5 m s?1).
    publisherAmerican Meteorological Society
    titleThe Improvement to the Environmental Wind and Tropical Cyclone Circulation Retrievals with the Modified GBVTD (MGBVTD) Technique
    typeJournal Paper
    journal volume52
    journal issue11
    journal titleJournal of Applied Meteorology and Climatology
    identifier doi10.1175/JAMC-D-13-031.1
    journal fristpage2493
    journal lastpage2508
    treeJournal of Applied Meteorology and Climatology:;2013:;volume( 052 ):;issue: 011
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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