Uncoupled El Nino Warming

Hu, Zeng‐Zhen; McPhaden, Michael J.; Kumar, Arun; Yu, Jin‐Yi; Johnson, Nathaniel C.

doi:10.1029/2020GL087621

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i

Uncoupled El Nino Warming

2020
By Hu, Zeng‐Zhen ; McPhaden, Michael J. ; Kumar, Arun ; ...
Source: Geophysical Research Letters 47(7) 2020 10.1029/2020gl087621
Series: PMEL Contribution no. 4995

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Hu, Zeng‐Zhen ; McPhaden, Michael J. ; Kumar, Arun ; Yu, Jin‐Yi ; Johnson, Nathaniel C.

Hu, Zeng‐Zhen ; McPhaden, Michael J. ; Kumar, Arun ; Yu, Jin‐Yi ; Johnson, Nathaniel C. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory) ; PMEL (Pacific Marine Environmental Laboratory) ; NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction) ; ... More +

OAR (Oceanic and Atmospheric Research) ; GFDL (Geophysical Fluid Dynamics Laboratory) ; PMEL (Pacific Marine Environmental Laboratory) ; NWS (National Weather Service) ; NCEP (National Centers for Environmental Prediction) ; CICSP (Cooperative Institute for Climate Science) Less -
Description:

In light of a warming climate, the complexity of the El Nino/Southern Oscillation (ENSO) makes its prediction a challenge. In addition to various flavors of ENSO, oceanic warming in the central and eastern tropical Pacific is not always accompanied by corresponding atmospheric anomalies; that is, the atmosphere and ocean remain uncoupled. Such uncoupled warm events as happened in 1979, 2004, 2014, and 2018 are rare and represent an unusual form of ENSO diversity. A weaker zonal sea surface temperature anomaly gradient across the tropical Pacific compared to a conventional El Nino may partially account for the decoupling. Also, the uncoupled warm events typically start late in the calendar year, which raises the possible influence of seasonality in background conditions for the lack of coupling. Without coupling, the impact of the warming in the central and eastern tropical Pacific on extratropical climate is different from that of its coupled counterpart.
Keywords:

[+]

Atmospheric Teleconnections Enso Geology Impact On Extratropics Interannual Model Ocean Recharge Paradigm Oscillator Precipitation System Temperature Uncoupled El Nino Warming Variability Zonal SSTA Gradient
Source:

Geophysical Research Letters 47(7) 2020 10.1029/2020gl087621
Series:

PMEL Contribution no. 4995
DOI:

https://doi.org/10.1029/2020GL087621
Document Type:

Journal Article
Funding:

Grant no. NA14OAR4320106 Contribution no. 4995
Place as Subject:

Pacific Area
Rights Information:

Public Domain
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:6dcab8b040e1321ff702e736058fa4d250d878678da4d824a1a564c78b1a0911
Download URL:

https://repository.library.noaa.gov/view/noaa/29913/noaa_29913_DS1.pdf
File Type:

	Available dataset	htm
	Available dataset	htm
	Available dataset	htm

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