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    Longwave Cloud Radiative Forcing as Determined from Nimbus-7 Observations

    Source: Journal of Climate:;1989:;volume( 002 ):;issue: 008::page 766
    Author:
    Ardanuy, Philip E.
    ,
    Stowe, Larry L.
    ,
    Gruber, Arnold
    ,
    Weiss, Mitchell
    ,
    Long, Craig S.
    DOI: 10.1175/1520-0442(1989)002<0766:LCRFAD>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Collocated and coincident cloud and outgoing longwave radiation observations taken by experiments on board the Nimbus-7 satellite have been used to infer the daytime longwave cloud-radiative forcing. Through the specification of a time-series of daily values of cloud amount, cloud-top temperature, surface temperature, and outgoing longwave radiation, the clear-sky flux is obtained for both the summer (June, July, and August 1979) and winter (December 1979. January and February 1980) seasons. The longwave component of the cloud-radiative forcing is then computed by subtracting the observed outgoing longwave flux from the inferred clear-sky longwave flux. The results are compared to independent cloud forcing estimates produced using high spatial resolution radiometers and found to agree closely. The resultant cloud forcing is analyzed regionally, zonally, and globally for each season to quantify, through observation, the role that clouds play in modulating the outgoing longwave radiation. The largest cloud forcing is found over regions of tropical convection, and reaches peak values of about 80 W m?2 in the vicinity of the summer and winter monsoon. Cloud forcing values of less than 10 W m?2 are evident over the deserts the subtropical oceans, and in the polar latitudes, Zonally, the cloud forcing reaches maxima over the Intertropical Convergence Zone (40 to 50 W m?2) and over the polar frontal zones of both hemispheres (25 to 30 W m?2), and minima in the subtropical belts and at the poles. Globally, the cloud forcing is found to be 24 W m?2. The globally averaged cloud cover for the same period is 50%.
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      Longwave Cloud Radiative Forcing as Determined from Nimbus-7 Observations

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4174068
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    contributor authorArdanuy, Philip E.
    contributor authorStowe, Larry L.
    contributor authorGruber, Arnold
    contributor authorWeiss, Mitchell
    contributor authorLong, Craig S.
    date accessioned2017-06-09T15:09:46Z
    date available2017-06-09T15:09:46Z
    date copyright1989/08/01
    date issued1989
    identifier issn0894-8755
    identifier otherams-3610.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4174068
    description abstractCollocated and coincident cloud and outgoing longwave radiation observations taken by experiments on board the Nimbus-7 satellite have been used to infer the daytime longwave cloud-radiative forcing. Through the specification of a time-series of daily values of cloud amount, cloud-top temperature, surface temperature, and outgoing longwave radiation, the clear-sky flux is obtained for both the summer (June, July, and August 1979) and winter (December 1979. January and February 1980) seasons. The longwave component of the cloud-radiative forcing is then computed by subtracting the observed outgoing longwave flux from the inferred clear-sky longwave flux. The results are compared to independent cloud forcing estimates produced using high spatial resolution radiometers and found to agree closely. The resultant cloud forcing is analyzed regionally, zonally, and globally for each season to quantify, through observation, the role that clouds play in modulating the outgoing longwave radiation. The largest cloud forcing is found over regions of tropical convection, and reaches peak values of about 80 W m?2 in the vicinity of the summer and winter monsoon. Cloud forcing values of less than 10 W m?2 are evident over the deserts the subtropical oceans, and in the polar latitudes, Zonally, the cloud forcing reaches maxima over the Intertropical Convergence Zone (40 to 50 W m?2) and over the polar frontal zones of both hemispheres (25 to 30 W m?2), and minima in the subtropical belts and at the poles. Globally, the cloud forcing is found to be 24 W m?2. The globally averaged cloud cover for the same period is 50%.
    publisherAmerican Meteorological Society
    titleLongwave Cloud Radiative Forcing as Determined from Nimbus-7 Observations
    typeJournal Paper
    journal volume2
    journal issue8
    journal titleJournal of Climate
    identifier doi10.1175/1520-0442(1989)002<0766:LCRFAD>2.0.CO;2
    journal fristpage766
    journal lastpage799
    treeJournal of Climate:;1989:;volume( 002 ):;issue: 008
    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
    yabeshDSpacePersian