Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation

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Standard

Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation. / Heo, Eun-Sook; An, Soon-Il; Ringgaard, Ida Margrethe; Yang, Shuting; Christensen, Jens Hesselbjerg; Sung, Mi-Kyung.

I: International Journal of Climatology, Bind 42, Nr. 9, 20.12.2021, s. 4881-4892.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Heo, E-S, An, S-I, Ringgaard, IM, Yang, S, Christensen, JH & Sung, M-K 2021, 'Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation', International Journal of Climatology, bind 42, nr. 9, s. 4881-4892. https://doi.org/10.1002/joc.7509

APA

Heo, E-S., An, S-I., Ringgaard, I. M., Yang, S., Christensen, J. H., & Sung, M-K. (2021). Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation. International Journal of Climatology, 42(9), 4881-4892. https://doi.org/10.1002/joc.7509

Vancouver

Heo E-S, An S-I, Ringgaard IM, Yang S, Christensen JH, Sung M-K. Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation. International Journal of Climatology. 2021 dec. 20;42(9):4881-4892. https://doi.org/10.1002/joc.7509

Author

Heo, Eun-Sook ; An, Soon-Il ; Ringgaard, Ida Margrethe ; Yang, Shuting ; Christensen, Jens Hesselbjerg ; Sung, Mi-Kyung. / Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation. I: International Journal of Climatology. 2021 ; Bind 42, Nr. 9. s. 4881-4892.

Bibtex

@article{c4c4feb7eb4f489a85cf9dc1c4b7dd13,
title = "Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation",
abstract = "The abrupt decline in sea ice in the Barents-Kara (BK) Sea because of global warming has been argued to influence not only higher latitudes but also the tropics. Using EC-Earth model simulations, we demonstrated that the El Nino-Southern Oscillation (ENSO) period becomes longer when BK sea ice substantially decreases. As BK sea ice was forcibly reduced through nudging experiments, the mean Walker circulation shifted to the west, and the zonal sea surface temperature contrast in the tropical Pacific was enhanced. Consequently, the western Pacific mean thermocline became deeper, which reduced the sensitivity of oceanic wave response to wind forcing. Therefore, the oceanic Kelvin waves reflected by ENSO-induced surface winds, a primary delayed negative feedback factor, were significantly weakened. Thus, ENSO phases could be sustained for longer.",
keywords = "Barents-Kara sea ice, ENSO periodicity, teleconnection, ATMOSPHERIC RESPONSE, ARCTIC AMPLIFICATION, CLIMATE, VARIABILITY, CIRCULATION, MODEL, ENSO, WINTERS",
author = "Eun-Sook Heo and Soon-Il An and Ringgaard, {Ida Margrethe} and Shuting Yang and Christensen, {Jens Hesselbjerg} and Mi-Kyung Sung",
year = "2021",
month = dec,
day = "20",
doi = "10.1002/joc.7509",
language = "English",
volume = "42",
pages = "4881--4892",
journal = "International Journal of Climatology",
issn = "0899-8418",
publisher = "JohnWiley & Sons Ltd",
number = "9",

}

RIS

TY - JOUR

T1 - Influence of retreating Barents-Kara sea ice on the periodicity of El Nino-Southern Oscillation

AU - Heo, Eun-Sook

AU - An, Soon-Il

AU - Ringgaard, Ida Margrethe

AU - Yang, Shuting

AU - Christensen, Jens Hesselbjerg

AU - Sung, Mi-Kyung

PY - 2021/12/20

Y1 - 2021/12/20

N2 - The abrupt decline in sea ice in the Barents-Kara (BK) Sea because of global warming has been argued to influence not only higher latitudes but also the tropics. Using EC-Earth model simulations, we demonstrated that the El Nino-Southern Oscillation (ENSO) period becomes longer when BK sea ice substantially decreases. As BK sea ice was forcibly reduced through nudging experiments, the mean Walker circulation shifted to the west, and the zonal sea surface temperature contrast in the tropical Pacific was enhanced. Consequently, the western Pacific mean thermocline became deeper, which reduced the sensitivity of oceanic wave response to wind forcing. Therefore, the oceanic Kelvin waves reflected by ENSO-induced surface winds, a primary delayed negative feedback factor, were significantly weakened. Thus, ENSO phases could be sustained for longer.

AB - The abrupt decline in sea ice in the Barents-Kara (BK) Sea because of global warming has been argued to influence not only higher latitudes but also the tropics. Using EC-Earth model simulations, we demonstrated that the El Nino-Southern Oscillation (ENSO) period becomes longer when BK sea ice substantially decreases. As BK sea ice was forcibly reduced through nudging experiments, the mean Walker circulation shifted to the west, and the zonal sea surface temperature contrast in the tropical Pacific was enhanced. Consequently, the western Pacific mean thermocline became deeper, which reduced the sensitivity of oceanic wave response to wind forcing. Therefore, the oceanic Kelvin waves reflected by ENSO-induced surface winds, a primary delayed negative feedback factor, were significantly weakened. Thus, ENSO phases could be sustained for longer.

KW - Barents-Kara sea ice

KW - ENSO periodicity

KW - teleconnection

KW - ATMOSPHERIC RESPONSE

KW - ARCTIC AMPLIFICATION

KW - CLIMATE

KW - VARIABILITY

KW - CIRCULATION

KW - MODEL

KW - ENSO

KW - WINTERS

U2 - 10.1002/joc.7509

DO - 10.1002/joc.7509

M3 - Journal article

VL - 42

SP - 4881

EP - 4892

JO - International Journal of Climatology

JF - International Journal of Climatology

SN - 0899-8418

IS - 9

ER -

ID: 288715171