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Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption: a 3-D model study

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Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption : a 3-D model study. / Dhomse, S. S.; Chipperfield, M. P.; Feng, W.; Hossaini, Ryan; Mann, G. W.; Santee, M. L.

In: Geophysical Research Letters, Vol. 42, No. 8, 28.04.2015, p. 3038-3047.

Research output: Contribution to journalJournal article

Harvard

Dhomse, SS, Chipperfield, MP, Feng, W, Hossaini, R, Mann, GW & Santee, ML 2015, 'Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption: a 3-D model study', Geophysical Research Letters, vol. 42, no. 8, pp. 3038-3047. https://doi.org/10.1002/2015GL063052

APA

Dhomse, S. S., Chipperfield, M. P., Feng, W., Hossaini, R., Mann, G. W., & Santee, M. L. (2015). Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption: a 3-D model study. Geophysical Research Letters, 42(8), 3038-3047. https://doi.org/10.1002/2015GL063052

Vancouver

Dhomse SS, Chipperfield MP, Feng W, Hossaini R, Mann GW, Santee ML. Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption: a 3-D model study. Geophysical Research Letters. 2015 Apr 28;42(8):3038-3047. https://doi.org/10.1002/2015GL063052

Author

Dhomse, S. S. ; Chipperfield, M. P. ; Feng, W. ; Hossaini, Ryan ; Mann, G. W. ; Santee, M. L. / Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption : a 3-D model study. In: Geophysical Research Letters. 2015 ; Vol. 42, No. 8. pp. 3038-3047.

Bibtex

@article{f70c76d607da464797aff2f0f2cf1cd4,
title = "Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption: a 3-D model study",
abstract = "Following the eruption of Mount Pinatubo, satellite and in situ measurements showed a large enhancement in stratospheric aerosol in both hemispheres, but significant midlatitude column O3 depletion was observed only in the north. We use a three-dimensional chemical transport model to determine the mechanisms behind this hemispheric asymmetry. The model, forced by European Centre for Medium-Range Weather Forecasts ERA-Interim reanalyses and updated aerosol surface area density, successfully simulates observed large column NO2 decreases and the different extents of ozone depletion in the two hemispheres. The chemical ozone loss is similar in the Northern (NH) and Southern Hemispheres (SH), but the contrasting role of dynamics increases the depletion in the NH and decreases it in the SH. The relevant SH dynamics are not captured as well by earlier ERA-40 reanalyses. Overall, the smaller SH column O3 depletion can be attributed to dynamical variability and smaller SH background lower stratosphere O3 concentrations.",
keywords = "Pinatubo, chemical modeling, ozone, satellite data",
author = "Dhomse, {S. S.} and Chipperfield, {M. P.} and W. Feng and Ryan Hossaini and Mann, {G. W.} and Santee, {M. L.}",
year = "2015",
month = apr,
day = "28",
doi = "10.1002/2015GL063052",
language = "English",
volume = "42",
pages = "3038--3047",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley & Sons, Ltd",
number = "8",

}

RIS

TY - JOUR

T1 - Revisiting the hemispheric asymmetry in midlatitude ozone changes following the Mount Pinatubo eruption

T2 - a 3-D model study

AU - Dhomse, S. S.

AU - Chipperfield, M. P.

AU - Feng, W.

AU - Hossaini, Ryan

AU - Mann, G. W.

AU - Santee, M. L.

PY - 2015/4/28

Y1 - 2015/4/28

N2 - Following the eruption of Mount Pinatubo, satellite and in situ measurements showed a large enhancement in stratospheric aerosol in both hemispheres, but significant midlatitude column O3 depletion was observed only in the north. We use a three-dimensional chemical transport model to determine the mechanisms behind this hemispheric asymmetry. The model, forced by European Centre for Medium-Range Weather Forecasts ERA-Interim reanalyses and updated aerosol surface area density, successfully simulates observed large column NO2 decreases and the different extents of ozone depletion in the two hemispheres. The chemical ozone loss is similar in the Northern (NH) and Southern Hemispheres (SH), but the contrasting role of dynamics increases the depletion in the NH and decreases it in the SH. The relevant SH dynamics are not captured as well by earlier ERA-40 reanalyses. Overall, the smaller SH column O3 depletion can be attributed to dynamical variability and smaller SH background lower stratosphere O3 concentrations.

AB - Following the eruption of Mount Pinatubo, satellite and in situ measurements showed a large enhancement in stratospheric aerosol in both hemispheres, but significant midlatitude column O3 depletion was observed only in the north. We use a three-dimensional chemical transport model to determine the mechanisms behind this hemispheric asymmetry. The model, forced by European Centre for Medium-Range Weather Forecasts ERA-Interim reanalyses and updated aerosol surface area density, successfully simulates observed large column NO2 decreases and the different extents of ozone depletion in the two hemispheres. The chemical ozone loss is similar in the Northern (NH) and Southern Hemispheres (SH), but the contrasting role of dynamics increases the depletion in the NH and decreases it in the SH. The relevant SH dynamics are not captured as well by earlier ERA-40 reanalyses. Overall, the smaller SH column O3 depletion can be attributed to dynamical variability and smaller SH background lower stratosphere O3 concentrations.

KW - Pinatubo

KW - chemical modeling

KW - ozone

KW - satellite data

U2 - 10.1002/2015GL063052

DO - 10.1002/2015GL063052

M3 - Journal article

VL - 42

SP - 3038

EP - 3047

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 8

ER -