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    A MODIS Dual Spectral Rain Algorithm

    Source: Journal of Applied Meteorology and Climatology:;2007:;volume( 046 ):;issue: 009::page 1305
    Author:
    Yan, Hao
    ,
    Yang, Song
    DOI: 10.1175/JAM2541.1
    Publisher: American Meteorological Society
    Abstract: The Moderate Resolution Imaging Spectroradiometer (MODIS) dual spectral rain algorithm (MODRA) is developed for rain retrievals over the northern midlatitudes. The reflectance of the MODIS water vapor absorption channel at 1.38 ?m (R1.38 ?m) has a potential to represent the cloud-top height displayed by the brightness temperature (TB) of the MODIS channel at 11 ?m, because of an excellent negative relationship (correlation coefficient ≤?0.9) between R1.38 ?m and TB11 ?m for optically thick clouds with reflectance (R0.65 ?m) greater than 0.75. With a training rainfall dataset from the Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) aboard the same Aqua satellite platform, two MODIS channels (R1.38 ?m and R0.65 ?m) are applied to form multiregression curves to estimate daytime rainfall. Results demonstrate that the instantaneous rain rates from MODRA, independent AMSR-E rainfall products, and surface rain gauge measurements are consistent. This study explores a new way to estimate rainfall from MODIS water vapor and cloud channels. The resulting technique could be applied to other similar satellite instruments for rain retrievals.
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      A MODIS Dual Spectral Rain Algorithm

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4216697
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    contributor authorYan, Hao
    contributor authorYang, Song
    date accessioned2017-06-09T16:48:21Z
    date available2017-06-09T16:48:21Z
    date copyright2007/09/01
    date issued2007
    identifier issn1558-8424
    identifier otherams-74469.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4216697
    description abstractThe Moderate Resolution Imaging Spectroradiometer (MODIS) dual spectral rain algorithm (MODRA) is developed for rain retrievals over the northern midlatitudes. The reflectance of the MODIS water vapor absorption channel at 1.38 ?m (R1.38 ?m) has a potential to represent the cloud-top height displayed by the brightness temperature (TB) of the MODIS channel at 11 ?m, because of an excellent negative relationship (correlation coefficient ≤?0.9) between R1.38 ?m and TB11 ?m for optically thick clouds with reflectance (R0.65 ?m) greater than 0.75. With a training rainfall dataset from the Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) aboard the same Aqua satellite platform, two MODIS channels (R1.38 ?m and R0.65 ?m) are applied to form multiregression curves to estimate daytime rainfall. Results demonstrate that the instantaneous rain rates from MODRA, independent AMSR-E rainfall products, and surface rain gauge measurements are consistent. This study explores a new way to estimate rainfall from MODIS water vapor and cloud channels. The resulting technique could be applied to other similar satellite instruments for rain retrievals.
    publisherAmerican Meteorological Society
    titleA MODIS Dual Spectral Rain Algorithm
    typeJournal Paper
    journal volume46
    journal issue9
    journal titleJournal of Applied Meteorology and Climatology
    identifier doi10.1175/JAM2541.1
    journal fristpage1305
    journal lastpage1323
    treeJournal of Applied Meteorology and Climatology:;2007:;volume( 046 ):;issue: 009
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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