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Sustainability 2018, 10(6), 1783;

Leading El-Niño SST Oscillations around the Southern South American Continent

Department of Marine Environment and Engineering, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
Taiwan Ocean Research Institute, National Applied Research Laboratories, Kaohsiung 80143, Taiwan
Department of Earth Sciences, National Taiwan Normal University, Taipei 11677, Taiwan
Authors to whom correspondence should be addressed.
Received: 20 April 2018 / Revised: 19 May 2018 / Accepted: 28 May 2018 / Published: 29 May 2018
(This article belongs to the Section Sustainable Use of the Environment and Resources)
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The inter-annual variations in the sea surface temperatures (SSTs) of the tropical and subtropical Pacific Ocean have been widely investigated, largely due to their importance in achieving the sustainable development of marine ecosystems under a changing climate. The El Niño-Southern Oscillation (ENSO) is a widely recognized variability. In the subpolar region in the southern hemisphere, the Antarctic Circumpolar Current (ACC) is one of the main sources of the Peru Current. A change in the SST in the Southern Ocean may change the physical properties of the seawater in the tropical and subtropical Pacific Ocean. However, the variations in the SST in the Southern Ocean have rarely been addressed. This study uses a 147-year (1870–2016) dataset from the Met Office Hadley Centre to show that the SST anomalies (SSTAs) in the oceans west and east of South America and the Antarctic Peninsula have strong positive (R = 0.56) and negative (R = −0.67) correlations with the Niño 3.4 SSTA, respectively. Such correlations are likely related to the changes in circulations of the ACC. We further show that, statistically, the temporal variations in the SSTAs of the ACC lead the Niño 3.4 SSTA by four to six months. Such findings imply that change in the strength of ENSO or circulation under the changing climate could change the climate in regions at higher latitudes as well. View Full-Text
Keywords: HadISST; Antarctic Circumpolar Current; ACC; sea surface temperature; SST; ENSO HadISST; Antarctic Circumpolar Current; ACC; sea surface temperature; SST; ENSO

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Hsu, Y.-C.; Lee, C.-P.; Wang, Y.-L.; Wu, C.-R.; Lui, H.-K. Leading El-Niño SST Oscillations around the Southern South American Continent. Sustainability 2018, 10, 1783.

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