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    Attribution of the Subsurface Temperature Change in the Southern Hemisphere

    Source: Journal of Physical Oceanography:;2022:;volume( 053 ):;issue: 001::page 97
    Author:
    Jia-Jia Chen
    ,
    Xuhua Cheng
    DOI: 10.1175/JPO-D-21-0226.1
    Publisher: American Meteorological Society
    Abstract: The Southern Hemisphere temperature has experienced obvious changes with great spatial differences over the past several decades. Most regions show extreme warming, especially those located at 35°–55°S. In contrast, subsurface cooling exists between 15° and 35°S in the Indian and Pacific basins. The subsurface temperature and salinity change can be divided into spiciness change and heave components. The results show the warming due to isopycnal movement being largely offset by significant spiciness cooling at middepth. Surface warming and subduction into the interior ocean account for subsurface spiciness cooling near 45°S, while surface freshening and penetration along isopycnals are more important to the subsurface spiciness cooling farther north. The isobaric temperature change is associated with pure warming and pure heaving, and the subsurface cooling observed in the Indian and Pacific subtropics is predominantly attributed to pure heaving. This study provides a quantitative estimate of the relative contribution of surface temperature, salinity change, and circulation adjustment in subsurface temperature change, highlighting the importance of circulation change in producing subsurface cooling. Further research is needed to understand why different processes dominate in different ocean sections.
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      Attribution of the Subsurface Temperature Change in the Southern Hemisphere

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4290269
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    contributor authorJia-Jia Chen
    contributor authorXuhua Cheng
    date accessioned2023-04-12T18:47:56Z
    date available2023-04-12T18:47:56Z
    date copyright2022/12/13
    date issued2022
    identifier otherJPO-D-21-0226.1.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4290269
    description abstractThe Southern Hemisphere temperature has experienced obvious changes with great spatial differences over the past several decades. Most regions show extreme warming, especially those located at 35°–55°S. In contrast, subsurface cooling exists between 15° and 35°S in the Indian and Pacific basins. The subsurface temperature and salinity change can be divided into spiciness change and heave components. The results show the warming due to isopycnal movement being largely offset by significant spiciness cooling at middepth. Surface warming and subduction into the interior ocean account for subsurface spiciness cooling near 45°S, while surface freshening and penetration along isopycnals are more important to the subsurface spiciness cooling farther north. The isobaric temperature change is associated with pure warming and pure heaving, and the subsurface cooling observed in the Indian and Pacific subtropics is predominantly attributed to pure heaving. This study provides a quantitative estimate of the relative contribution of surface temperature, salinity change, and circulation adjustment in subsurface temperature change, highlighting the importance of circulation change in producing subsurface cooling. Further research is needed to understand why different processes dominate in different ocean sections.
    publisherAmerican Meteorological Society
    titleAttribution of the Subsurface Temperature Change in the Southern Hemisphere
    typeJournal Paper
    journal volume53
    journal issue1
    journal titleJournal of Physical Oceanography
    identifier doi10.1175/JPO-D-21-0226.1
    journal fristpage97
    journal lastpage111
    page97–111
    treeJournal of Physical Oceanography:;2022:;volume( 053 ):;issue: 001
    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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