Skip to main content

Advertisement

Log in

Quantifying contributions of ozone changes to global and arctic warming during the second half of the twentieth century

  • Published:
Climate Dynamics Aims and scope Submit manuscript

Abstract

Ozone is the third most important greenhouse gas in driving global warming, mainly due to increased tropospheric ozone. About 50% of the growth of global tropospheric ozone since preindustrial time occurred during 1955–2005, with continued growth since then. This study quantifies the relative contributions of ozone changes during 1955–2005 to total observed global and Arctic climate changes by comparing CESM1 historical simulations with all anthropogenic and natural radiative forcings including realistic ozone changes, and with the same forcings except with constant ozone or well-mixed greenhouse gases (WMGHG). Results indicate that ozone changes during 1955–2005 have strongly enhanced the downwelling longwave flux and increased net shortwave flux at the surface, and thus significantly contributed about 0.15 °C of global mean surface warming, roughly 21%, 26% and 16% of the observed, all-forcing and WMGHG-driven trends, respectively. In the Arctic in the same period, corresponding ozone-driven warming was about 0.63 °C, roughly 48%, 40% and 25% of the same three trends. During 1979–2005, these ozone changes have markedly added about 0.25 × 106 km2 to the decrease in the Arctic sea ice extent (SIE), or roughly 25%, 48%, and 40% of the same three trends. Considering that the ozone-driven radiative forcing of about 0.22 (0.06) W·m−2 in 1955–2005 (1979–2005) was about 12% (6%) of the corresponding WMGHG forcing, ozone changes had contributed disproportionately to global and Arctic warming and Arctic sea ice decline during the second half of the twentieth century. Tropospheric ozone has shown relatively steady growth since 2006 and might have significantly contributed recent observed warming over the global and the Arctic.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11

Similar content being viewed by others

Data availability

All datasets supporting this study are publicly available. The Whole Atmosphere Community Climate Model (WACCM) ozone concentrations were downloaded from the National Center for Atmospheric Research (NCAR) (https://www.earthsystemgrid.org). The Goddard Institute for Space Studies (GISS) Surface Temperature Analysis version 4 (GISTEMP v4) was obtained from National Aeronautics and Space Administration (NASA) (https://data.giss.nasa.gov/gistemp). The observed sea ice concentration (SIC) and sea ice extent (SIE) are from the SMMR/SSMI Bootstrap satellite-derived dataset (https://nsidc.org/data/NSIDC-0079/versions/2). The Community Earth System Model (CESM) Large Ensemble and Fixed Ozone Ensemble were obtained from National Center for Atmospheric Research (NCAR) (https://www.earthsystemgrid.org).

References

Download references

Acknowledgements

We are grateful for the insightful and constructive comments from two anonymous reviewers. This work is funded by the National Key Scientific Research Plan of China (Grant 91837206). The authors acknowledge the Beijing Super Cloud Computing Center (BSCC) for providing HPC resources that have contributed to the research results reported within this paper (URL:http://www.blsc.cn/).

Funding

This work is funded by the National Key Scientific Research Plan of China (Grant 91837206).

Author information

Authors and Affiliations

Authors

Contributions

QW designed and wrote the paper. YH performed statistical analyses and prepared all figures. All authors analyzed and discussed the results, commented on the manuscript, and contributed to the manuscript.

Corresponding author

Correspondence to Qigang Wu.

Ethics declarations

Conflict of interest

The authors have no relevant financial or non-financial interests to disclose.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Hu, Y., Wu, Q., Hu, A. et al. Quantifying contributions of ozone changes to global and arctic warming during the second half of the twentieth century. Clim Dyn 61, 1209–1228 (2023). https://doi.org/10.1007/s00382-022-06621-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00382-022-06621-6

Keywords

Navigation