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    NVAP and Reanalysis-2 Global Precipitable Water Products : Intercomparison and Variability Studies

    Source: Bulletin of the American Meteorological Society:;2005:;volume( 086 ):;issue: 002::page 245
    Author:
    Amenu, Geremew G.
    ,
    Kumar, Praveen
    DOI: 10.1175/BAMS-86-2-245
    Publisher: American Meteorological Society
    Abstract: In this study similarities and differences between NASA's Water Vapor Project (NVAP) and NCEP?NCAR's reanalysis-2 total precipitable water (TPW) datasets are investigated, along with an assessment of its space?time variability, using simple statistical techniques. Global and hemispheric, as well as annual and seasonal differences between the two datasets are analyzed in detail. It is found that, in general, both datasets show very similar spatial and temporal patterns of variability, and there is a good correlation between them. The spatial TPW variability is closely related to latitudinal and altitudinal variations, and temporal TPW variability is strongly related to monsoon and ENSO events. In spite of the similarity in the patterns, there are significant differences in the magnitudes of TPW amount and variability between the two datasets. At the global scale it is found that the NCEP?NCAR reanalyis-2 product shows a more moist atmosphere than NVAP. On the other hand, variability analyses show that NVAP has higher spatial and temporal variability than the NCEP?NCAR reanalysis-2 data. Further, we found out that the TPW anomalies are driven by the global surface temperature anomalies, but with a lag.
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      NVAP and Reanalysis-2 Global Precipitable Water Products : Intercomparison and Variability Studies

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4214828
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    contributor authorAmenu, Geremew G.
    contributor authorKumar, Praveen
    date accessioned2017-06-09T16:42:46Z
    date available2017-06-09T16:42:46Z
    date copyright2005/02/01
    date issued2005
    identifier issn0003-0007
    identifier otherams-72787.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4214828
    description abstractIn this study similarities and differences between NASA's Water Vapor Project (NVAP) and NCEP?NCAR's reanalysis-2 total precipitable water (TPW) datasets are investigated, along with an assessment of its space?time variability, using simple statistical techniques. Global and hemispheric, as well as annual and seasonal differences between the two datasets are analyzed in detail. It is found that, in general, both datasets show very similar spatial and temporal patterns of variability, and there is a good correlation between them. The spatial TPW variability is closely related to latitudinal and altitudinal variations, and temporal TPW variability is strongly related to monsoon and ENSO events. In spite of the similarity in the patterns, there are significant differences in the magnitudes of TPW amount and variability between the two datasets. At the global scale it is found that the NCEP?NCAR reanalyis-2 product shows a more moist atmosphere than NVAP. On the other hand, variability analyses show that NVAP has higher spatial and temporal variability than the NCEP?NCAR reanalysis-2 data. Further, we found out that the TPW anomalies are driven by the global surface temperature anomalies, but with a lag.
    publisherAmerican Meteorological Society
    titleNVAP and Reanalysis-2 Global Precipitable Water Products : Intercomparison and Variability Studies
    typeJournal Paper
    journal volume86
    journal issue2
    journal titleBulletin of the American Meteorological Society
    identifier doi10.1175/BAMS-86-2-245
    journal fristpage245
    journal lastpage256
    treeBulletin of the American Meteorological Society:;2005:;volume( 086 ):;issue: 002
    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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