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    PATMOS-x: Results from a Diurnally Corrected 30-yr Satellite Cloud Climatology

    Source: Journal of Climate:;2012:;volume( 026 ):;issue: 002::page 414
    Author:
    Foster, Michael J.
    ,
    Heidinger, Andrew
    DOI: 10.1175/JCLI-D-11-00666.1
    Publisher: American Meteorological Society
    Abstract: atellite drift is a historical issue affecting the consistency of those few satellite records capable of being used for studies on climate time scales. Here, the authors address this issue for the Pathfinder Atmospheres Extended (PATMOS-x)/Advanced Very High Resolution Radiometer (AVHRR) cloudiness record, which spans three decades and 11 disparate sensors. A two-harmonic sinusoidal function is fit to a mean diurnal cycle of cloudiness derived over the course of the entire AVHRR record. The authors validate this function against measurements from Geostationary Operational Environmental Satellite (GOES) sensors, finding good agreement, and then test the stability of the diurnal cycle over the course of the AVHRR record. It is found that the diurnal cycle is subject to some interannual variability over land but that the differences are somewhat offset when averaged over an entire day. The fit function is used to generate daily averaged time series of ice, water, and total cloudiness over the tropics, where it is found that the diurnal correction affects the magnitude and even the sign of long-term cloudiness trends. A statistical method is applied to determine the minimum length of time required to detect significant trends, and the authors find that only recently have they begun generating satellite records of sufficient length to detect trends in cloudiness.
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      PATMOS-x: Results from a Diurnally Corrected 30-yr Satellite Cloud Climatology

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4222042
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    contributor authorFoster, Michael J.
    contributor authorHeidinger, Andrew
    date accessioned2017-06-09T17:05:39Z
    date available2017-06-09T17:05:39Z
    date copyright2013/01/01
    date issued2012
    identifier issn0894-8755
    identifier otherams-79280.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4222042
    description abstractatellite drift is a historical issue affecting the consistency of those few satellite records capable of being used for studies on climate time scales. Here, the authors address this issue for the Pathfinder Atmospheres Extended (PATMOS-x)/Advanced Very High Resolution Radiometer (AVHRR) cloudiness record, which spans three decades and 11 disparate sensors. A two-harmonic sinusoidal function is fit to a mean diurnal cycle of cloudiness derived over the course of the entire AVHRR record. The authors validate this function against measurements from Geostationary Operational Environmental Satellite (GOES) sensors, finding good agreement, and then test the stability of the diurnal cycle over the course of the AVHRR record. It is found that the diurnal cycle is subject to some interannual variability over land but that the differences are somewhat offset when averaged over an entire day. The fit function is used to generate daily averaged time series of ice, water, and total cloudiness over the tropics, where it is found that the diurnal correction affects the magnitude and even the sign of long-term cloudiness trends. A statistical method is applied to determine the minimum length of time required to detect significant trends, and the authors find that only recently have they begun generating satellite records of sufficient length to detect trends in cloudiness.
    publisherAmerican Meteorological Society
    titlePATMOS-x: Results from a Diurnally Corrected 30-yr Satellite Cloud Climatology
    typeJournal Paper
    journal volume26
    journal issue2
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-11-00666.1
    journal fristpage414
    journal lastpage425
    treeJournal of Climate:;2012:;volume( 026 ):;issue: 002
    contenttypeFulltext
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