Simulated contribution of the interdecadal Pacific oscillation to the west Eurasia cooling in 1998–2013
Simulated contribution of the interdecadal Pacific oscillation to the west Eurasia cooling in 1998–2013
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DOI：
10.1088/1748-9326/ac88e5
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发表时间：
2022-08
影响因子：
6.7
通讯作者：
L. Suo;G. Gastineau;Yongqi Gao;Yu‐Chiao Liang;R. Ghosh;T. Tian;Ying Zhang;Young‐Oh Kwon;O. Otterå;Shuting Yang;D. Matei
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文献类型：
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作者：
L. Suo;G. Gastineau;Yongqi Gao;Yu‐Chiao Liang;R. Ghosh;T. Tian;Ying Zhang;Young‐Oh Kwon;O. Otterå;Shuting Yang;D. Matei
利用6个大气环流模式的大型集合模拟，验证了1998-2013年欧亚大陆冬季显著变冷时期太平洋涛动（IPO）对欧亚大陆冬季地面气温（SAT）变化趋势的影响。在我们的模拟中，IPO在1998-2013年给欧亚大陆中西部带来了降温趋势，约为该地区观测到的EC的四分之一。冷却与IPO到强负值的相变有关。然而，面积平均SAT的趋势，在西部EC地区之间的合奏，由内部的变化，由于大气和土地的内在驱动的标准差，是三倍以上的孤立IPO的影响，这可以阴影IPO对欧亚大陆西部冬季气候的调制。
Large ensemble simulations with six atmospheric general circulation models involved are utilized to verify the interdecadal Pacific oscillation (IPO) impacts on the trend of Eurasian winter surface air temperatures (SAT) during 1998–2013, a period characterized by the prominent Eurasia cooling (EC). In our simulations, IPO brings a cooling trend over west-central Eurasia in 1998–2013, about a quarter of the observed EC in that area. The cooling is associated with the phase transition of the IPO to a strong negative. However, the standard deviation of the area-averaged SAT trends in the west EC region among ensembles, driven by internal variability intrinsic due to the atmosphere and land, is more than three times the isolated IPO impacts, which can shadow the modulation of the IPO on the west Eurasia winter climate.