Symmetry of the Atlantic Niño mode

Lübbecke, Joke F.; McPhaden, Michael J.

doi:10.1002/2016gl071829

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i

Symmetry of the Atlantic Niño mode

2017
By Lübbecke, Joke F. ; McPhaden, Michael J.
Source: Geophysical Research Letters, 44(2), 965-973

[PDF-1.26 MB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Lübbecke, Joke F. ; McPhaden, Michael J.

Lübbecke, Joke F. ; McPhaden, Michael J. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory)

OAR (Oceanic and Atmospheric Research) ; PMEL (Pacific Marine Environmental Laboratory) Less -
Description:

El Niño –Southern Oscillation (ENSO) in the Paci ﬁc is asymmetric for warm and cold events with respect to amplitude, spatial patterns, and temporal evolution. Here the symmetry of the Atlantic Niño mode, which many previous studies have argued is governed by atmosphere-ocean dynamics similar to those of ENSO, is investigated using two different ocean reanalysis products. Calculation of Bjerknes feedbackterms for the Paci ﬁc reveals a pronounced asymmetry between warm and cold events, though unlike most previous studies, the largest asymmetry is found in the relationship between eastern Paci ﬁc thermocline depth and sea surface temperature anomalies. For the Atlantic, cold events are effectively mirror images ofwarm events with Bjerknes feedbacks of similar strength. The analysis supports not only the conclusion that Atlantic Niños are more symmetric than ENSO but also the hypothesis itself that the Bjerknes feedback is
Keywords:

[+]

General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 44(2), 965-973
DOI:

https://doi.org/10.1002/2016gl071829
ISSN:

0094-8276;1944-8007;
Format:

PDF
Publisher:

American Geophysical Union (AGU)
Document Type:

Journal Article
Rights Information:

Other
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Library
Main Document Checksum:

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urn:sha256:490d3e7a78bfba254cf8f4bcc8902400ff72ed2fa38775b3df872ee4fbfbe4f6
Download URL:

https://repository.library.noaa.gov/view/noaa/53929/noaa_53929_DS1.pdf
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Machine readable version (XML)

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