Semi-Annual variation of excited hydroxyl emission at mid-latitudes

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Semi-Annual variation of excited hydroxyl emission at mid-latitudes. / Grygalashvyly, Mykhaylo; Pogoreltsev, Alexander I.; Andreyev, Alexey B.; Smyshlyaev, Sergei P.; Sonnemann, Gerd R.

In: Annales Geophysicae, Vol. 39, No. 1, 26.02.2021, p. 255-265.

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

Author

Grygalashvyly, Mykhaylo ; Pogoreltsev, Alexander I. ; Andreyev, Alexey B. ; Smyshlyaev, Sergei P. ; Sonnemann, Gerd R. / Semi-Annual variation of excited hydroxyl emission at mid-latitudes. In: Annales Geophysicae. 2021 ; Vol. 39, No. 1. pp. 255-265.

BibTeX

@article{b538e71cbe394955a3f850b673a1d158,

title = "Semi-Annual variation of excited hydroxyl emission at mid-latitudes",

abstract = "Ground-based observations show a phase shift in semi-Annual variation of excited hydroxyl (OH) emissions at mid-latitudes (43 N) compared to those at low latitudes. This differs from the annual cycle at high latitudes. We examine this behaviour by utilising an OH airglow model which was incorporated into a 3D chemistry?transport model (CTM). Through this modelling, we study the morphology of the excited hydroxyl emission layer at mid-latitudes (30? 50 N), and we assess the impact of the main drivers of its semi-Annual variation: Temperature, atomic oxygen, and air density. We found that this shift in the semi-Annual cycle is determined mainly by the superposition of annual variations of temperature and atomic oxygen concentration. Hence, the winter peak for emission is determined exclusively by atomic oxygen concentration, whereas the summer peak is the superposition of all impacts, with temperature taking a leading role.",

keywords = "OZONE CHEMICAL-EQUILIBRIUM, ALGORITHM THEORETICAL BASIS, ATOMIC OXYGEN, MESOPAUSE REGION, OH(6-2) AIRGLOW, SEASONAL-VARIATIONS, OH, TEMPERATURE, MESOSPHERE, MIDDLE",

author = "Mykhaylo Grygalashvyly and Pogoreltsev, {Alexander I.} and Andreyev, {Alexey B.} and Smyshlyaev, {Sergei P.} and Sonnemann, {Gerd R.}",

year = "2021",

month = feb,

day = "26",

doi = "10.5194/angeo-39-255-2021",

language = "English",

volume = "39",

pages = "255--265",

journal = "Annales Geophysicae",

issn = "0992-7689",

publisher = "Copernicus GmbH ",

number = "1",

}

RIS

TY - JOUR

T1 - Semi-Annual variation of excited hydroxyl emission at mid-latitudes

AU - Grygalashvyly, Mykhaylo

AU - Pogoreltsev, Alexander I.

AU - Andreyev, Alexey B.

AU - Smyshlyaev, Sergei P.

AU - Sonnemann, Gerd R.

PY - 2021/2/26

Y1 - 2021/2/26

N2 - Ground-based observations show a phase shift in semi-Annual variation of excited hydroxyl (OH) emissions at mid-latitudes (43 N) compared to those at low latitudes. This differs from the annual cycle at high latitudes. We examine this behaviour by utilising an OH airglow model which was incorporated into a 3D chemistry?transport model (CTM). Through this modelling, we study the morphology of the excited hydroxyl emission layer at mid-latitudes (30? 50 N), and we assess the impact of the main drivers of its semi-Annual variation: Temperature, atomic oxygen, and air density. We found that this shift in the semi-Annual cycle is determined mainly by the superposition of annual variations of temperature and atomic oxygen concentration. Hence, the winter peak for emission is determined exclusively by atomic oxygen concentration, whereas the summer peak is the superposition of all impacts, with temperature taking a leading role.

AB - Ground-based observations show a phase shift in semi-Annual variation of excited hydroxyl (OH) emissions at mid-latitudes (43 N) compared to those at low latitudes. This differs from the annual cycle at high latitudes. We examine this behaviour by utilising an OH airglow model which was incorporated into a 3D chemistry?transport model (CTM). Through this modelling, we study the morphology of the excited hydroxyl emission layer at mid-latitudes (30? 50 N), and we assess the impact of the main drivers of its semi-Annual variation: Temperature, atomic oxygen, and air density. We found that this shift in the semi-Annual cycle is determined mainly by the superposition of annual variations of temperature and atomic oxygen concentration. Hence, the winter peak for emission is determined exclusively by atomic oxygen concentration, whereas the summer peak is the superposition of all impacts, with temperature taking a leading role.

KW - OZONE CHEMICAL-EQUILIBRIUM

KW - ALGORITHM THEORETICAL BASIS

KW - ATOMIC OXYGEN

KW - MESOPAUSE REGION

KW - OH(6-2) AIRGLOW

KW - SEASONAL-VARIATIONS

KW - OH

KW - TEMPERATURE

KW - MESOSPHERE

KW - MIDDLE

UR - http://www.scopus.com/inward/record.url?scp=85101640469&partnerID=8YFLogxK

U2 - 10.5194/angeo-39-255-2021

DO - 10.5194/angeo-39-255-2021

M3 - Article

AN - SCOPUS:85101640469

VL - 39

SP - 255

EP - 265

JO - Annales Geophysicae

JF - Annales Geophysicae

SN - 0992-7689

IS - 1

ER -

ID: 77246958