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    Simulated Atlantic Multidecadal Oscillation during the Holocene

    Source: Journal of Climate:;2012:;volume( 025 ):;issue: 020::page 6989
    Author:
    Wei, Wei
    ,
    Lohmann, Gerrit
    DOI: 10.1175/JCLI-D-11-00667.1
    Publisher: American Meteorological Society
    Abstract: he Atlantic multidecadal oscillation (AMO) and its possible change during the Holocene are examined in this study, using long-term simulations of the earth system model Community Earth System Models (COSMOS). A quasi-persistent ~55?80-yr cycle characterizing in the North Atlantic sea surface temperature is highly associated with the multidecadal variability of the Atlantic meridional overturning circulation (AMOC) during the Holocene. This mode can be found throughout the Holocene, indicating that the AMO is dominated by internal climate variability. Stronger-than-normal AMOC results in warmer-than-normal surface temperature spreading over almost the whole North Hemisphere, in particular the North Atlantic Ocean. During the warm phase of the AMO, more precipitation is detected in the North Atlantic low and high latitudes. It also generates a dipolar seesaw pattern in the sea ice anomaly. The results reveal that the influence of the AMO can be amplified by a more vigorous AMOC variability during the early Holocene in the presence of a remnant of the Laurentide Ice Sheet and when freshwater entered the North Atlantic Ocean. This conclusion could have potential application for the past AMO reconstruction and the future AMO estimation.
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      Simulated Atlantic Multidecadal Oscillation during the Holocene

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4222043
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    contributor authorWei, Wei
    contributor authorLohmann, Gerrit
    date accessioned2017-06-09T17:05:39Z
    date available2017-06-09T17:05:39Z
    date copyright2012/10/01
    date issued2012
    identifier issn0894-8755
    identifier otherams-79281.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4222043
    description abstracthe Atlantic multidecadal oscillation (AMO) and its possible change during the Holocene are examined in this study, using long-term simulations of the earth system model Community Earth System Models (COSMOS). A quasi-persistent ~55?80-yr cycle characterizing in the North Atlantic sea surface temperature is highly associated with the multidecadal variability of the Atlantic meridional overturning circulation (AMOC) during the Holocene. This mode can be found throughout the Holocene, indicating that the AMO is dominated by internal climate variability. Stronger-than-normal AMOC results in warmer-than-normal surface temperature spreading over almost the whole North Hemisphere, in particular the North Atlantic Ocean. During the warm phase of the AMO, more precipitation is detected in the North Atlantic low and high latitudes. It also generates a dipolar seesaw pattern in the sea ice anomaly. The results reveal that the influence of the AMO can be amplified by a more vigorous AMOC variability during the early Holocene in the presence of a remnant of the Laurentide Ice Sheet and when freshwater entered the North Atlantic Ocean. This conclusion could have potential application for the past AMO reconstruction and the future AMO estimation.
    publisherAmerican Meteorological Society
    titleSimulated Atlantic Multidecadal Oscillation during the Holocene
    typeJournal Paper
    journal volume25
    journal issue20
    journal titleJournal of Climate
    identifier doi10.1175/JCLI-D-11-00667.1
    journal fristpage6989
    journal lastpage7002
    treeJournal of Climate:;2012:;volume( 025 ):;issue: 020
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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