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    Separating the Impact of Individual Land Surface Properties on the Terrestrial Surface Energy Budget in both the Coupled and Uncoupled Land–Atmosphere System

    Source: Journal of Climate:;2019:;volume 032:;issue 018::page 5725
    Author:
    Laguë, Marysa M.
    ,
    Bonan, Gordon B.
    ,
    Swann, Abigail L. S.
    DOI: 10.1175/JCLI-D-18-0812.1
    Publisher: American Meteorological Society
    Abstract: AbstractChanges in the land surface can drive large responses in the atmosphere on local, regional, and global scales. Surface properties control the partitioning of energy within the surface energy budget to fluxes of shortwave and longwave radiation, sensible and latent heat, and ground heat storage. Changes in surface energy fluxes can impact the atmosphere across scales through changes in temperature, cloud cover, and large-scale atmospheric circulation. We test the sensitivity of the atmosphere to global changes in three land surface properties: albedo, evaporative resistance, and surface roughness. We show the impact of changing these surface properties differs drastically between simulations run with an offline land model, compared to coupled land?atmosphere simulations that allow for atmospheric feedbacks associated with land?atmosphere coupling. Atmospheric feedbacks play a critical role in defining the temperature response to changes in albedo and evaporative resistance, particularly in the extratropics. More than 50% of the surface temperature response to changing albedo comes from atmospheric feedbacks in over 80% of land areas. In some regions, cloud feedbacks in response to increased evaporative resistance result in nearly 1 K of additional surface warming. In contrast, the magnitude of surface temperature responses to changes in vegetation height are comparable between offline and coupled simulations. We improve our fundamental understanding of how and why changes in vegetation cover drive responses in the atmosphere, and develop understanding of the role of individual land surface properties in controlling climate across spatial scales?critical to understanding the effects of land-use change on Earth?s climate.
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      Separating the Impact of Individual Land Surface Properties on the Terrestrial Surface Energy Budget in both the Coupled and Uncoupled Land–Atmosphere System

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4263225
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    contributor authorLaguë, Marysa M.
    contributor authorBonan, Gordon B.
    contributor authorSwann, Abigail L. S.
    date accessioned2019-10-05T06:43:31Z
    date available2019-10-05T06:43:31Z
    date copyright6/14/2019 12:00:00 AM
    date issued2019
    identifier otherJCLI-D-18-0812.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4263225
    description abstractAbstractChanges in the land surface can drive large responses in the atmosphere on local, regional, and global scales. Surface properties control the partitioning of energy within the surface energy budget to fluxes of shortwave and longwave radiation, sensible and latent heat, and ground heat storage. Changes in surface energy fluxes can impact the atmosphere across scales through changes in temperature, cloud cover, and large-scale atmospheric circulation. We test the sensitivity of the atmosphere to global changes in three land surface properties: albedo, evaporative resistance, and surface roughness. We show the impact of changing these surface properties differs drastically between simulations run with an offline land model, compared to coupled land?atmosphere simulations that allow for atmospheric feedbacks associated with land?atmosphere coupling. Atmospheric feedbacks play a critical role in defining the temperature response to changes in albedo and evaporative resistance, particularly in the extratropics. More than 50% of the surface temperature response to changing albedo comes from atmospheric feedbacks in over 80% of land areas. In some regions, cloud feedbacks in response to increased evaporative resistance result in nearly 1 K of additional surface warming. In contrast, the magnitude of surface temperature responses to changes in vegetation height are comparable between offline and coupled simulations. We improve our fundamental understanding of how and why changes in vegetation cover drive responses in the atmosphere, and develop understanding of the role of individual land surface properties in controlling climate across spatial scales?critical to understanding the effects of land-use change on Earth?s climate.
    publisherAmerican Meteorological Society
    titleSeparating the Impact of Individual Land Surface Properties on the Terrestrial Surface Energy Budget in both the Coupled and Uncoupled Land–Atmosphere System
    typeJournal Paper
    journal volume32
    journal issue18
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-18-0812.1
    journal fristpage5725
    journal lastpage5744
    treeJournal of Climate:;2019:;volume 032:;issue 018
    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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