Spurious North Tropical Atlantic precursors to El Niño.
Spurious North Tropical Atlantic precursors to El Niño.
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北部的北热带大西洋前体向厄尔尼诺现象。
DOI:
10.1038/s41467-021-23411-6
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发表时间:
2021-05-25
影响因子:
16.6
通讯作者:
Timmermann A
中科院分区:
文献类型:
--
作者:
Zhang W;Jiang F;Stuecker MF;Jin FF;Timmermann A
The El Niño-Southern Oscillation (ENSO), the primary driver of year-to-year global climate variability, is known to influence the North Tropical Atlantic (NTA) sea surface temperature (SST), especially during boreal spring season. Focusing on statistical lead-lag relationships, previous studies have proposed that interannual NTA SST variability can also feed back on ENSO in a predictable manner. However, these studies did not properly account for ENSO’s autocorrelation and the fact that the SST in the Atlantic and Pacific, as well as their interaction are seasonally modulated. This can lead to misinterpretations of causality and the spurious identification of Atlantic precursors for ENSO. Revisiting this issue under consideration of seasonality, time-varying ENSO frequency, and greenhouse warming, we demonstrate that the cross-correlation characteristics between NTA SST and ENSO, are consistent with a one-way Pacific to Atlantic forcing, even though the interpretation of lead-lag relationships may suggest otherwise. It has been suggested that sea surface temperatures in the North Tropical Atlantic exert strong influence on the evolution of the El Nino Southern Oscillation (ENSO). Here, the authors argue that observed statistics are fully consistent with ENSO driving climate variations in the Atlantic and not vice versa.
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5.2
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通讯作者:
Park, Jong-Yeon
影响因子:
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影响因子:
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影响因子:
4.6
作者:
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