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Cited by 34Climate variability and modelsOceanographic and Atmospheric ProcessesGeology and Paleoclimatology Research

Influences of ENSO Teleconnection on the Persistence of Sea Surface Temperature in the Tropical Indian Ocean

Open access
Ding, Ruiqiang, Li, Jianping·2012·Journal of Climate
DOI 10.1175/jcli-d-11-00739.1
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Abstract

This study confirms a weak spring persistence barrier (SPB) of sea surface temperature anomalies (SSTAs) in the western tropical Indian Ocean (WIO), a strong fall persistence barrier (FPB) in the South China Sea (SCS), and the strongest winter persistence barrier (WPB) in the southeastern tropical Indian Ocean (SEIO). During El Niño events, a less abrupt sign reversal of SSTAs occurs in the WIO during spring, an abrupt reversal occurs in the SCS during fall, and the most abrupt reversal occurs in the SEIO during winter. The sign reversal of SSTA implies a rapid decrease in SSTA persistence, which is favorable for the occurrence of a persistence barrier. The present results indicate that a more abrupt reversal of SSTA sign generally corresponds to a more prominent persistence barrier. El Niño–induced changes in atmospheric circulation result in reduced evaporation and suppressed convection. This in turn leads to the warming over much of the TIO basin, which is an important mechanism for the abrupt switch in SSTA, from negative to positive, in the northern SCS and SEIO. The seasonal cycle of the prevailing surface winds has a strong influence on the timing of the persistence barriers in the TIO. The Indian Ocean dipole (IOD) alone can cause a weak WPB in the SEIO. El Niño events co-occurring with positive IOD further strengthen the SEIO WPB. The SEIO WPB appears to be more strongly influenced by ENSO than by the IOD. In contrast, the WIO SPB and the SCS FPB are relatively independent of the IOD.

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  • ENSO state influences SSTA persistence in the Indian Ocean, where SSTA variability is comparatively small.

    “In turn, ENSO state influences SSTA persistence in the Indian Ocean, where SSTA variability is comparatively small7.”

    From Tendencies, variability and persistence of sea surface temperature anomalies (2020) · cites this paper as [7]

    The Summary (page unavailable) reports that SSTA persistence barriers in parts of the tropical Indian Ocean weaken or disappear during weak or normal ENSO conditions, supporting the claim that ENSO state influences persistence. The paper does not establish that Indian Ocean SSTA variability is comparatively small overall; Section 3 (page unavailable) describes very small anomalies only for normal ENSO cases. (LLM, conf=0.85)

    Experimental — accuracy not yet measured

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Authors
Ding, R., & Li, J.
Affiliations
Chinese Academy of Sciences (CN)
Corresponding author
Li, Jianping
ORCID
Venue
Journal of Climate
Publisher
American Meteorological Society
Published
2012-12-01
Volume
25
Issue
23
Pages
8177-8195
ISSN
  • 0894-8755 (ISSN-L)
  • 1520-0442
DOI
10.1175/jcli-d-11-00739.1
OpenAlex
W2047503286
Cited by
34
References
52
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 4 · 2020: 2 · 2018: 2 · 2017: 5 · 2016: 1 · 2015: 5 · 2014: 4 · 2013: 1
FWCI
2.65
Type
journal article
Language
en
Open access
Locations
Journal of Climate (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Climate variability and models
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Oceanographic and Atmospheric Processes
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
Keywords
ENSO teleconnections, sea surface temperature anomalies, seasonal persistence, El Niño, Indian Ocean Dipole, South China Sea, sign reversal, atmospheric circulation, evaporation reduction, convection, surface winds, seasonal cycle

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