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Volume 24 Issue 1

Jan.  2007

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2007 >  24(1): 126-135

Influence of the Atlantic Multidecadal Oscillation on the Winter Climate of East China

  • 1.

    Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; NOAA ESRL-CIRES Climate Diagnostics Center, University of Colorado, Boulder, Colorado,NOAA ESRL-CIRES Climate Diagnostics Center, University of Colorado, Boulder, Colorado


doi: 10.1007/s00376-007-0126-6

  • The Atlantic Multidecadal Oscillation (AMO), the multidecadal variation of North Atlantic sea surface temperature (SST), exhibits an oscillation with a period of 65--80 years and an amplitude of 0.4oC. Observational composite analyses reveal that the warm phase AMO is linked to warmer winters in East China, with enhanced precipitation in the north of this region and reduced precipitation in the south, on multidecadal time scales. The pattern is reversed during the cold phase AMO. Whether the AMO acts as a forcing of the multidecadal winter climate of East China is explored by investigating the atmospheric response to warm AMO SST anomalies in a large ensemble of atmospheric general circulation model (AGCM) experiments. The results from three AGCMs are consistent and suggest that the AMO warmth favors warmer winters in East China. This influence is realized through inducing negative surface air pressure anomalies in the hemispheric-wide domain extending from the midlatitude North Atlantic to midlatitude Eurasia. These negative surface anomalies favor the weakening of the Mongolian Cold High, and thus induce a weaker East Asian Winter Monsoon.
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    [6] Shuangmei MA, Congwen ZHU, Juan LIU, 2020: Combined Impacts of Warm Central Equatorial Pacific Sea Surface Temperatures and Anthropogenic Warming on the 2019 Severe Drought in East China, ADVANCES IN ATMOSPHERIC SCIENCES, 37, 1149-1163.  doi: 10.1007/s00376-020-0077-8
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    [9] ZHOU Xiaomin, LI Shuanglin, LUO Feifei, GAO Yongqi, Tore FUREVIK, 2015: Air-Sea Coupling Enhances the East Asian Winter Climate Response to the Atlantic Multidecadal Oscillation, ADVANCES IN ATMOSPHERIC SCIENCES, 32, 1647-1659.  doi: 10.1007/s00376-015-5030-x
    [10] CHEN Wen, ZHOU Qun, 2012: Modulation of the Arctic Oscillation and the East Asian Winter Climate Relationships by the 11-year Solar Cycle, ADVANCES IN ATMOSPHERIC SCIENCES, 29, 217-226.  doi: 10.1007/s00376-011-1095-3
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    [12] Liang Pingde, Liu Aixia, 1994: Winter Asia Jetstream and Seasonal Precipitation in East China, ADVANCES IN ATMOSPHERIC SCIENCES, 11, 311-318.  doi: 10.1007/BF02658150
    [13] Wu Bingyi, Wang Jia, 2002: Possible Impacts of Winter Arctic Oscillation on Siberian High, the East Asian Winter Monsoon and Sea-Ice Extent, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 297-320.  doi: 10.1007/s00376-002-0024-x
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    • Manuscript History

    Manuscript received: 10 January 2007
    Manuscript revised: 10 January 2007
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Influence of the Atlantic Multidecadal Oscillation on the Winter Climate of East China

    • 1. Nansen-Zhu International Research Centre, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; NOAA ESRL-CIRES Climate Diagnostics Center, University of Colorado, Boulder, Colorado,NOAA ESRL-CIRES Climate Diagnostics Center, University of Colorado, Boulder, Colorado
    • Manuscript received: 2007-01-10
    • Manuscript revised: 2007-01-10

    Abstract: The Atlantic Multidecadal Oscillation (AMO), the multidecadal variation of North Atlantic sea surface temperature (SST), exhibits an oscillation with a period of 65--80 years and an amplitude of 0.4oC. Observational composite analyses reveal that the warm phase AMO is linked to warmer winters in East China, with enhanced precipitation in the north of this region and reduced precipitation in the south, on multidecadal time scales. The pattern is reversed during the cold phase AMO. Whether the AMO acts as a forcing of the multidecadal winter climate of East China is explored by investigating the atmospheric response to warm AMO SST anomalies in a large ensemble of atmospheric general circulation model (AGCM) experiments. The results from three AGCMs are consistent and suggest that the AMO warmth favors warmer winters in East China. This influence is realized through inducing negative surface air pressure anomalies in the hemispheric-wide domain extending from the midlatitude North Atlantic to midlatitude Eurasia. These negative surface anomalies favor the weakening of the Mongolian Cold High, and thus induce a weaker East Asian Winter Monsoon.

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