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    An Oceanic Impact of the Kuroshio on Surface Air Temperature on the Pacific Coast of Japan in Summer: Regional H2O Greenhouse Gas Effect

    Source: Journal of Climate:;2015:;volume( 028 ):;issue: 018::page 7128
    Author:
    Takahashi, Hiroshi G.
    ,
    Adachi, Sachiho A.
    ,
    Sato, Tomonori
    ,
    Hara, Masayuki
    ,
    Ma, Xieyao
    ,
    Kimura, Fujio
    DOI: 10.1175/JCLI-D-14-00763.1
    Publisher: American Meteorological Society
    Abstract: his study used a 4-km resolution regional climate model to examine the sensitivity of surface air temperature on the Pacific coast of Japan to sea surface temperature (SST) south of the Pacific coast of Japan during summer. The authors performed a control simulation (CTL) driven by reanalysis and observational SST datasets. A series of sensitivity experiments using climatological values from the CTL SST datasets over a 31-yr period was conducted. The interannual variation in surface air temperature over the Pacific coast was well simulated in CTL. The interannual variation in SST over the Kuroshio region amplified the interannual variation in surface air temperature over the Pacific coast. It was found that 30% of the total variance of interannual variation in surface air temperature can be controlled by interannual variation in SST. The calculated surface air temperature on the Pacific coast increased by 0.4 K per 1-K SST warming in the Kuroshio region. Note that this sensitivity was considerably greater during nighttime than during daytime. Concurrent with the warming in surface air temperature, downward longwave radiation at the surface was also increased. In summer, the increase in latent heat flux was considerably larger than that in sensible heat flux over the ocean because of SST warming, according to the temperature dependence of the Bowen ratio. This implies that the primary factor for the increase in surface air temperature in summer is increased moisture in the lower troposphere, indicating that the regional warming was caused by an increase in H2O greenhouse gas.
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      An Oceanic Impact of the Kuroshio on Surface Air Temperature on the Pacific Coast of Japan in Summer: Regional H2O Greenhouse Gas Effect

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4223838
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    • Journal of Climate

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    contributor authorTakahashi, Hiroshi G.
    contributor authorAdachi, Sachiho A.
    contributor authorSato, Tomonori
    contributor authorHara, Masayuki
    contributor authorMa, Xieyao
    contributor authorKimura, Fujio
    date accessioned2017-06-09T17:11:41Z
    date available2017-06-09T17:11:41Z
    date copyright2015/09/01
    date issued2015
    identifier issn0894-8755
    identifier otherams-80896.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4223838
    description abstracthis study used a 4-km resolution regional climate model to examine the sensitivity of surface air temperature on the Pacific coast of Japan to sea surface temperature (SST) south of the Pacific coast of Japan during summer. The authors performed a control simulation (CTL) driven by reanalysis and observational SST datasets. A series of sensitivity experiments using climatological values from the CTL SST datasets over a 31-yr period was conducted. The interannual variation in surface air temperature over the Pacific coast was well simulated in CTL. The interannual variation in SST over the Kuroshio region amplified the interannual variation in surface air temperature over the Pacific coast. It was found that 30% of the total variance of interannual variation in surface air temperature can be controlled by interannual variation in SST. The calculated surface air temperature on the Pacific coast increased by 0.4 K per 1-K SST warming in the Kuroshio region. Note that this sensitivity was considerably greater during nighttime than during daytime. Concurrent with the warming in surface air temperature, downward longwave radiation at the surface was also increased. In summer, the increase in latent heat flux was considerably larger than that in sensible heat flux over the ocean because of SST warming, according to the temperature dependence of the Bowen ratio. This implies that the primary factor for the increase in surface air temperature in summer is increased moisture in the lower troposphere, indicating that the regional warming was caused by an increase in H2O greenhouse gas.
    publisherAmerican Meteorological Society
    titleAn Oceanic Impact of the Kuroshio on Surface Air Temperature on the Pacific Coast of Japan in Summer: Regional H2O Greenhouse Gas Effect
    typeJournal Paper
    journal volume28
    journal issue18
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-14-00763.1
    journal fristpage7128
    journal lastpage7144
    treeJournal of Climate:;2015:;volume( 028 ):;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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