Modeling Residual Meridional Circulation at Different Phases of the Quasi-Biennial Oscillation

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Modeling Residual Meridional Circulation at Different Phases of the Quasi-Biennial Oscillation. / Koval, A. V.; Gavrilov, N. M.; Pogoreltsev, A. I.; Efimov, M. M.

In: Izvestiya - Atmospheric and Ocean Physics, Vol. 58, No. 1, 02.2022, p. 22-29.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{c0f6e1ce8dc1409991f279a5dc8ac2b5,

title = "Modeling Residual Meridional Circulation at Different Phases of the Quasi-Biennial Oscillation",

abstract = "Abstract: The sensitivity of the residual meridional circulation (RMC) in the middle and upper atmosphere to the phase change of the quasi-biennial oscillation (QBO) of the low-latitude zonal wind in the stratosphere has been studied. Wind and temperature data obtained from a nonlinear numerical model of general circulation of the middle and upper atmosphere (MUAM) have been used to calculate the RMC. For the first time, statistically significant results have been obtained illustrating the change in wave-induced eddy flows in the extratropical strato–mesosphere at different QBO phases. Specifically, a general weakening of the eddy circulation in the Northern Hemisphere at the westerly QBO phase has been demonstrated, with the exception of the region located at midlatitudes in the altitude range of 50–60 km. The study of the RMC sensitivity to changes in QBO phases helps better understand the features of the dynamic interaction between tropical and extratropical latitudes, as well as different atmospheric layers that affect the circulation transport and mixing of long-lived atmospheric components.",

keywords = "numerical modeling, quasi-biennial oscillation, residual meridional circulation",

author = "Koval, {A. V.} and Gavrilov, {N. M.} and Pogoreltsev, {A. I.} and Efimov, {M. M.}",

note = "Publisher Copyright: {\textcopyright} 2022, Pleiades Publishing, Ltd.",

year = "2022",

month = feb,

doi = "10.1134/s0001433822010054",

language = "English",

volume = "58",

pages = "22--29",

journal = "Izvestiya - Atmospheric and Oceanic Physics",

issn = "0001-4338",

publisher = "МАИК {"}Наука/Интерпериодика{"}",

number = "1",

}

RIS

TY - JOUR

T1 - Modeling Residual Meridional Circulation at Different Phases of the Quasi-Biennial Oscillation

AU - Koval, A. V.

AU - Gavrilov, N. M.

AU - Pogoreltsev, A. I.

AU - Efimov, M. M.

PY - 2022/2

Y1 - 2022/2

N2 - Abstract: The sensitivity of the residual meridional circulation (RMC) in the middle and upper atmosphere to the phase change of the quasi-biennial oscillation (QBO) of the low-latitude zonal wind in the stratosphere has been studied. Wind and temperature data obtained from a nonlinear numerical model of general circulation of the middle and upper atmosphere (MUAM) have been used to calculate the RMC. For the first time, statistically significant results have been obtained illustrating the change in wave-induced eddy flows in the extratropical strato–mesosphere at different QBO phases. Specifically, a general weakening of the eddy circulation in the Northern Hemisphere at the westerly QBO phase has been demonstrated, with the exception of the region located at midlatitudes in the altitude range of 50–60 km. The study of the RMC sensitivity to changes in QBO phases helps better understand the features of the dynamic interaction between tropical and extratropical latitudes, as well as different atmospheric layers that affect the circulation transport and mixing of long-lived atmospheric components.

AB - Abstract: The sensitivity of the residual meridional circulation (RMC) in the middle and upper atmosphere to the phase change of the quasi-biennial oscillation (QBO) of the low-latitude zonal wind in the stratosphere has been studied. Wind and temperature data obtained from a nonlinear numerical model of general circulation of the middle and upper atmosphere (MUAM) have been used to calculate the RMC. For the first time, statistically significant results have been obtained illustrating the change in wave-induced eddy flows in the extratropical strato–mesosphere at different QBO phases. Specifically, a general weakening of the eddy circulation in the Northern Hemisphere at the westerly QBO phase has been demonstrated, with the exception of the region located at midlatitudes in the altitude range of 50–60 km. The study of the RMC sensitivity to changes in QBO phases helps better understand the features of the dynamic interaction between tropical and extratropical latitudes, as well as different atmospheric layers that affect the circulation transport and mixing of long-lived atmospheric components.

KW - numerical modeling

KW - quasi-biennial oscillation

KW - residual meridional circulation

UR - http://www.scopus.com/inward/record.url?scp=85128512404&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/7bf9d547-bd73-3082-a072-f896e973fe69/

U2 - 10.1134/s0001433822010054

DO - 10.1134/s0001433822010054

M3 - Article

AN - SCOPUS:85128512404

VL - 58

SP - 22

EP - 29

JO - Izvestiya - Atmospheric and Oceanic Physics

JF - Izvestiya - Atmospheric and Oceanic Physics

SN - 0001-4338

IS - 1

ER -

ID: 96577600