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Title: Distinct persistence barriers in two types of ENSO: PERSISTENCE BARRIERS OF TWO ENSO TYPES

Journal Article · · Geophysical Research Letters
DOI:https://doi.org/10.1002/2016GL071015· OSTI ID:1330473
 [1];  [2];  [1];  [3]
  1. Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing China; CMA-NJU Joint Laboratory for Climate Prediction Studies, Institute for Climate and Global Change Research, School of Atmospheric Sciences, Nanjing University, Nanjing China
  2. Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing China; Department of Atmospheric Sciences, University of Hawaiʻi at Mānoa, Honolulu Hawaii USA
  3. Met Office Hadley Centre, Exeter UK
+ Show Author Affiliations

El Niño–Southern Oscillation (ENSO) is usually subject to a persistence barrier (PB) in boreal spring. This study quantifies the PB and then reveals its distinct features in the two types of ENSO, the eastern Pacific (EP) and central Pacific (CP) types. We suggest that the PB of ENSO can be measured by the maximum rate of autocorrelation decline of Niño sea surface temperature anomaly (SSTA) indices. Results show that the PB of ENSO generally occurs in boreal late spring to early summer in terms of Niño3.4 index, and the EP ENSO has the PB in late spring, while the CP type has the PB in summer. By defining an index to quantify PB intensity of ENSO, we find that the CP ENSO type features a much weaker PB, compared to the EP type, and the PB intensity of equatorial SSTAs is larger over the EP than the western Pacific and the far EP.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC000511
OSTI ID:
1330473
Alternate ID(s):
OSTI ID: 1330474
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters; ISSN 0094-8276
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 65 works
Citation information provided by
Web of Science

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