Manifestations of Different El Niño Types in the Dynamics of the Extratropical Stratosphere

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Manifestations of Different El Niño Types in the Dynamics of the Extratropical Stratosphere. / Ermakova, Tatiana S. ; Koval, Andrey V. ; Смышляев, Сергей Павлович ; Didenko, Ksenia A. ; Aniskina, Olga G. ; Savenkova, Elena N. ; Vinokurova, Ekaterina V. .

в: ATMOSPHERE, Том 13, № 12, 2111, 2022.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{c661e69c8dd743d2af4507553b108d63,

title = "Manifestations of Different El Ni{\~n}o Types in the Dynamics of the Extratropical Stratosphere",

abstract = "The behavior of planetary waves and their influence on the global circulation of the Northern Hemisphere during different El Ni{\~n}o types is studied. Three sets of five boreal winters were chosen for each El Ni{\~n}o type: Modoki I and II and canonical El Ni{\~n}o. Based on data of the Japanese 55-year Reanalysis and the Modern-Era Retrospective Analysis for Research and Applications, the spatio-temporal structure of planetary waves and the residual mean circulation were analyzed. The results show that the canonical El Ni{\~n}o type is characterized by the weakest wave activity in March. It is also demonstrated that warming of the polar stratosphere, accompanied by maximizing wave activity and weakening of the zonal wind, may lead to earlier stratospheric polar vortex collapse and the early spring transition under Modoki I conditions. This study is the next step in understanding of the so-called long-range teleconnections, consisting of the propagation of a signal from the tropical El Ni{\~n}o Southern Oscillation source into the polar stratosphere.",

keywords = "El Ni{\~n}o, Modoki, planetary waves, wave activity flux, residual meridional circulation, stratospheric dynamics",

author = "Ermakova, {Tatiana S.} and Koval, {Andrey V.} and Смышляев, {Сергей Павлович} and Didenko, {Ksenia A.} and Aniskina, {Olga G.} and Savenkova, {Elena N.} and Vinokurova, {Ekaterina V.}",

note = "Ermakova, T.S.; Koval, A.V.; Smyshlyaev, S.P.; Didenko, K.A.; Aniskina, O.G.; Savenkova, E.N.; Vinokurova, E.V. Manifestations of Different El Ni{\~n}o Types in the Dynamics of the Extratropical Stratosphere. Atmosphere 2022, 13, 2111. https://doi.org/10.3390/atmos13122111",

year = "2022",

doi = "10.3390/atmos13122111",

language = "English",

volume = "13",

journal = "ATMOSPHERE",

issn = "1598-3560",

publisher = "MDPI AG",

number = "12",

}

RIS

TY - JOUR

T1 - Manifestations of Different El Niño Types in the Dynamics of the Extratropical Stratosphere

AU - Ermakova, Tatiana S.

AU - Koval, Andrey V.

AU - Смышляев, Сергей Павлович

AU - Didenko, Ksenia A.

AU - Aniskina, Olga G.

AU - Savenkova, Elena N.

AU - Vinokurova, Ekaterina V.

N1 - Ermakova, T.S.; Koval, A.V.; Smyshlyaev, S.P.; Didenko, K.A.; Aniskina, O.G.; Savenkova, E.N.; Vinokurova, E.V. Manifestations of Different El Niño Types in the Dynamics of the Extratropical Stratosphere. Atmosphere 2022, 13, 2111. https://doi.org/10.3390/atmos13122111

PY - 2022

Y1 - 2022

N2 - The behavior of planetary waves and their influence on the global circulation of the Northern Hemisphere during different El Niño types is studied. Three sets of five boreal winters were chosen for each El Niño type: Modoki I and II and canonical El Niño. Based on data of the Japanese 55-year Reanalysis and the Modern-Era Retrospective Analysis for Research and Applications, the spatio-temporal structure of planetary waves and the residual mean circulation were analyzed. The results show that the canonical El Niño type is characterized by the weakest wave activity in March. It is also demonstrated that warming of the polar stratosphere, accompanied by maximizing wave activity and weakening of the zonal wind, may lead to earlier stratospheric polar vortex collapse and the early spring transition under Modoki I conditions. This study is the next step in understanding of the so-called long-range teleconnections, consisting of the propagation of a signal from the tropical El Niño Southern Oscillation source into the polar stratosphere.

AB - The behavior of planetary waves and their influence on the global circulation of the Northern Hemisphere during different El Niño types is studied. Three sets of five boreal winters were chosen for each El Niño type: Modoki I and II and canonical El Niño. Based on data of the Japanese 55-year Reanalysis and the Modern-Era Retrospective Analysis for Research and Applications, the spatio-temporal structure of planetary waves and the residual mean circulation were analyzed. The results show that the canonical El Niño type is characterized by the weakest wave activity in March. It is also demonstrated that warming of the polar stratosphere, accompanied by maximizing wave activity and weakening of the zonal wind, may lead to earlier stratospheric polar vortex collapse and the early spring transition under Modoki I conditions. This study is the next step in understanding of the so-called long-range teleconnections, consisting of the propagation of a signal from the tropical El Niño Southern Oscillation source into the polar stratosphere.

KW - El Niño

KW - Modoki

KW - planetary waves

KW - wave activity flux

KW - residual meridional circulation

KW - stratospheric dynamics

U2 - 10.3390/atmos13122111

DO - 10.3390/atmos13122111

M3 - Article

VL - 13

JO - ATMOSPHERE

JF - ATMOSPHERE

SN - 1598-3560

IS - 12

M1 - 2111

ER -

ID: 103036093