Coupling influences of ENSO and PDO on the inter-decadal SST variability of the ACC around the western South Atlantic

You Lin Wang, Yu Chen Hsu, Chung Pan Lee, Chau Ron Wu

Research output: Contribution to journalArticle


The Antarctic Circumpolar Current (ACC) plays an important role in the climate as it balances heat energy and water mass between the Pacific and Atlantic Oceans through the Drake Passage. However, because the historical measurements and observations are extremely limited, the decadal and long-term variations of the ACC around the western South Atlantic Ocean are rarely studied. By analyzing reconstructed sea surface temperatures (SSTs) in a 147-year period (1870-2016), previous studies have shown that SST anomalies (SSTAs) around the Antarctic Peninsula and South America had the same phase change as the El Niño Southern Oscillation (ENSO). This study further showed that changes in SSTAs in the regions mentioned above were enlarged when the Pacific Decadal Oscillation (PDO) and the ENSO were in the same warm or cold phase, implying that changes in the SST of higher latitude oceans could be enhanced when the influence of the ENSO is considered along with the PDO.

Original languageEnglish
Article number4853
JournalSustainability (Switzerland)
Issue number18
Publication statusPublished - 2019 Sep 1



  • Antarctic Circumpolar Current
  • ENSO
  • HadISST
  • Pacific Decadal Oscillation
  • SST
  • Sea surface temperature
  • Superpositioning

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Management, Monitoring, Policy and Law

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