Two distinct roles of Atlantic SSTs in ENSO variability: North Tropical Atlantic SST and Atlantic Nino
Two distinct roles of Atlantic SSTs in ENSO variability: North Tropical Atlantic SST and Atlantic Nino
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DOI：
10.1002/grl.50729
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发表时间：
2013-08-16
影响因子：
5.2
通讯作者：
Park, Jong-Yeon
中科院分区：
文献类型：
--
作者：
Ham, Yoo-Geun;Kug, Jong-Seong;Park, Jong-Yeon
利用1980 - 2010年的观测资料和耦合模式试验，研究了北热带大西洋（NTA）海温和大西洋Nino对厄尔尼诺-南方涛动（ENSO）变率的影响。NTA SST和大西洋Nino可以作为ENSO事件发展的两个独立的预报因子。此外，它们可能与不同类型的厄尔尼诺事件有关。具体而言，NTA SST在2月，3月和4月的冷却有助于在随后的冬季中太平洋变暖，而负大西洋Nino事件在6月，7月和8月有助于加强东太平洋变暖。耦合模型实验支持这些结果。利用两个大西洋指数的统计预报，借助于滞后反比关系，可以成功地预报各种ENSO指数。
Two distinct roles of the Atlantic sea surface temperatures (SSTs), namely, the North Tropical Atlantic (NTA) SST and the Atlantic Nino, on the El Nino-Southern Oscillation (ENSO) variability are investigated using the observational data from 1980 to 2010 and coupled model experiments. It appears that the NTA SST and the Atlantic Nino can be used as two independent predictors for predicting the development of ENSO events in the following season. Furthermore, they are likely to be linked to different types of El Nino events. Specifically, the NTA SST cooling during February, March, and April contributes to the central Pacific warming at the subsequent winter season, while the negative Atlantic Nino event during June, July, and August contributes to enhancing the eastern Pacific warming. The coupled model experiments support these results. With the aid of a lagged inverse relationship, the statistical forecast using two Atlantic indices can successfully predict various ENSO indices.