Impact of global SST on decadal shift of East Asian summer climate |
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| Authors: | Jianjian Fu Shuanglin Li Dehai Luo |
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| Institution: | College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100;
Nansen-Zhu International Research Centre ( NZC), Institute of Atmospheric Physics,
Chinese Academy of Sciences, Beijing 100029;Nansen-Zhu International Research Centre ( NZC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100 |
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| Abstract: | East Asia experienced a significant interdecadal climate shift around the late 1970s, with more floods
in the valley of the Yangtze River of central-eastern China and more severe drought in North China since then.
Whether global SST variations have played a role in this shift is unclear. In the present study, this issue is
investigated by ensemble experiments of an atmospheric general circulation model (AGCM), the GFDL AM2, since one
validation reveals that the model simulates the observed East Asian Summer Monsoon (EASM) well. The results suggest
that decadal global SST variations may have played a substantial role in this climate shift. Further examination
of the associated atmospheric circulation shows that these results are physically reasonable. |
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| Keywords: | East Asian summer monsoon interdecadal shift SST AGCM |
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