Arctic Tropospheric Ozone Trends

Kathy S. Law; Jens L. Hjorth; Jakob B. Pernov; Cynthia H. Whaley; Henrik Skov; Martine Collaud Coen; Joakim Langner; Stephen R. Arnold; David Tarasick; Jesper Christensen; Makoto Deushi; Peter Effertz; Greg Faluvegi; Michael Gauss; Ulas Im; Naga Oshima; Irina Petropavlovskikh; David Plummer; Kostas Tsigaridis; Svetlana Tsyro; Sverre Solberg; Stephen Turnock

doi:10.1029/2023GL103096

Arctic Tropospheric Ozone Trends

Kathy S. Law^*, Jens L. Hjorth, Jakob B. Pernov, Cynthia H. Whaley, Henrik Skov, Martine Collaud Coen, Joakim Langner, Stephen R. Arnold, David Tarasick, Jesper Christensen, Makoto Deushi, Peter Effertz, Greg Faluvegi, Michael Gauss, Ulas Im, Naga Oshima, Irina Petropavlovskikh, David Plummer, Kostas Tsigaridis, Svetlana TsyroSverre Solberg, Stephen Turnock

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Letter › peer-review

7 Citations (Scopus)

Abstract

Observed trends in tropospheric ozone, an important air pollutant and short-lived climate forcer (SLCF), are estimated using available surface and ozonesonde profile data for 1993–2019, using a coherent methodology, and compared to modeled trends (1995–2015) from the Arctic Monitoring Assessment Program SLCF 2021 assessment. Increases in observed surface ozone at Arctic coastal sites, notably during winter, and concurrent decreasing trends in surface carbon monoxide, are generally captured by multi-model median trends. Wintertime increases are also estimated in the free troposphere at most Arctic sites, with decreases during spring months. Winter trends tend to be overestimated by the multi-model medians. Springtime surface ozone increases in northern coastal Alaska are not simulated while negative springtime trends in northern Scandinavia are not always reproduced. Possible reasons for observed changes and model performance are discussed including decreasing precursor emissions, changing ozone dry deposition, and variability in large-scale meteorology.

Original language	English
Article number	e2023GL103096
Journal	Geophysical Research Letters
Volume	50
Issue	22
ISSN	0094-8276
DOIs	https://doi.org/10.1029/2023GL103096
Publication status	Published - Nov 2023

Keywords

Arctic
ozone
trends
troposphere

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Law, K. S., Hjorth, J. L., Pernov, J. B., Whaley, C. H., Skov, H., Collaud Coen, M., Langner, J., Arnold, S. R., Tarasick, D., Christensen, J., Deushi, M., Effertz, P., Faluvegi, G., Gauss, M., Im, U., Oshima, N., Petropavlovskikh, I., Plummer, D., Tsigaridis, K., ... Turnock, S. (2023). Arctic Tropospheric Ozone Trends. Geophysical Research Letters, 50(22), Article e2023GL103096. https://doi.org/10.1029/2023GL103096

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title = "Arctic Tropospheric Ozone Trends",

abstract = "Observed trends in tropospheric ozone, an important air pollutant and short-lived climate forcer (SLCF), are estimated using available surface and ozonesonde profile data for 1993–2019, using a coherent methodology, and compared to modeled trends (1995–2015) from the Arctic Monitoring Assessment Program SLCF 2021 assessment. Increases in observed surface ozone at Arctic coastal sites, notably during winter, and concurrent decreasing trends in surface carbon monoxide, are generally captured by multi-model median trends. Wintertime increases are also estimated in the free troposphere at most Arctic sites, with decreases during spring months. Winter trends tend to be overestimated by the multi-model medians. Springtime surface ozone increases in northern coastal Alaska are not simulated while negative springtime trends in northern Scandinavia are not always reproduced. Possible reasons for observed changes and model performance are discussed including decreasing precursor emissions, changing ozone dry deposition, and variability in large-scale meteorology.",

keywords = "Arctic, ozone, trends, troposphere",

author = "Law, \{Kathy S.\} and Hjorth, \{Jens L.\} and Pernov, \{Jakob B.\} and Whaley, \{Cynthia H.\} and Henrik Skov and \{Collaud Coen\}, Martine and Joakim Langner and Arnold, \{Stephen R.\} and David Tarasick and Jesper Christensen and Makoto Deushi and Peter Effertz and Greg Faluvegi and Michael Gauss and Ulas Im and Naga Oshima and Irina Petropavlovskikh and David Plummer and Kostas Tsigaridis and Svetlana Tsyro and Sverre Solberg and Stephen Turnock",

note = "Publisher Copyright: {\textcopyright} 2023. The Authors.",

year = "2023",

month = nov,

doi = "10.1029/2023GL103096",

language = "English",

volume = "50",

journal = "Geophysical Research Letters",

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Law, KS, Hjorth, JL, Pernov, JB, Whaley, CH, Skov, H, Collaud Coen, M, Langner, J, Arnold, SR, Tarasick, D, Christensen, J, Deushi, M, Effertz, P, Faluvegi, G, Gauss, M, Im, U, Oshima, N, Petropavlovskikh, I, Plummer, D, Tsigaridis, K, Tsyro, S, Solberg, S & Turnock, S 2023, 'Arctic Tropospheric Ozone Trends', Geophysical Research Letters, vol. 50, no. 22, e2023GL103096. https://doi.org/10.1029/2023GL103096

TY - JOUR

T1 - Arctic Tropospheric Ozone Trends

AU - Law, Kathy S.

AU - Hjorth, Jens L.

AU - Pernov, Jakob B.

AU - Whaley, Cynthia H.

AU - Skov, Henrik

AU - Collaud Coen, Martine

AU - Langner, Joakim

AU - Arnold, Stephen R.

AU - Tarasick, David

AU - Christensen, Jesper

AU - Deushi, Makoto

AU - Effertz, Peter

AU - Faluvegi, Greg

AU - Gauss, Michael

AU - Im, Ulas

AU - Oshima, Naga

AU - Petropavlovskikh, Irina

AU - Plummer, David

AU - Tsigaridis, Kostas

AU - Tsyro, Svetlana

AU - Solberg, Sverre

AU - Turnock, Stephen

PY - 2023/11

Y1 - 2023/11

N2 - Observed trends in tropospheric ozone, an important air pollutant and short-lived climate forcer (SLCF), are estimated using available surface and ozonesonde profile data for 1993–2019, using a coherent methodology, and compared to modeled trends (1995–2015) from the Arctic Monitoring Assessment Program SLCF 2021 assessment. Increases in observed surface ozone at Arctic coastal sites, notably during winter, and concurrent decreasing trends in surface carbon monoxide, are generally captured by multi-model median trends. Wintertime increases are also estimated in the free troposphere at most Arctic sites, with decreases during spring months. Winter trends tend to be overestimated by the multi-model medians. Springtime surface ozone increases in northern coastal Alaska are not simulated while negative springtime trends in northern Scandinavia are not always reproduced. Possible reasons for observed changes and model performance are discussed including decreasing precursor emissions, changing ozone dry deposition, and variability in large-scale meteorology.

AB - Observed trends in tropospheric ozone, an important air pollutant and short-lived climate forcer (SLCF), are estimated using available surface and ozonesonde profile data for 1993–2019, using a coherent methodology, and compared to modeled trends (1995–2015) from the Arctic Monitoring Assessment Program SLCF 2021 assessment. Increases in observed surface ozone at Arctic coastal sites, notably during winter, and concurrent decreasing trends in surface carbon monoxide, are generally captured by multi-model median trends. Wintertime increases are also estimated in the free troposphere at most Arctic sites, with decreases during spring months. Winter trends tend to be overestimated by the multi-model medians. Springtime surface ozone increases in northern coastal Alaska are not simulated while negative springtime trends in northern Scandinavia are not always reproduced. Possible reasons for observed changes and model performance are discussed including decreasing precursor emissions, changing ozone dry deposition, and variability in large-scale meteorology.

KW - Arctic

KW - ozone

KW - trends

KW - troposphere

UR - http://www.scopus.com/inward/record.url?scp=85177469804&partnerID=8YFLogxK

U2 - 10.1029/2023GL103096

DO - 10.1029/2023GL103096

M3 - Letter

AN - SCOPUS:85177469804

SN - 0094-8276

VL - 50

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 22

M1 - e2023GL103096

ER -

Arctic Tropospheric Ozone Trends

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