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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Volume 17, issue 11 | Copyright
Atmos. Chem. Phys., 17, 6705-6722, 2017
https://doi.org/10.5194/acp-17-6705-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 08 Jun 2017

Research article | 08 Jun 2017

The relationship between lower-stratospheric ozone at southern high latitudes and sea surface temperature in the East Asian marginal seas in austral spring

Wenshou Tian1, Yuanpu Li1, Fei Xie2, Jiankai Zhang1, Martyn P. Chipperfield3, Wuhu Feng4, Yongyun Hu5, Sen Zhao6,7, Xin Zhou8, Yun Yang2, and Xuan Ma2 Wenshou Tian et al.
  • 1College of Atmospheric Sciences, Lanzhou University, Lanzhou, China
  • 2College of Global Change and Earth System Science, Beijing Normal University, Beijing, China
  • 3ICAS, School of Earth and Environment, University of Leeds, Leeds, UK
  • 4NCAS, School of Earth and Environment, University of Leeds, Leeds, UK
  • 5Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China
  • 6Key Laboratory of Meteorological Disaster of Ministry of Education, and College of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing, China
  • 7School of Ocean and Earth Science and Technology, University of Hawaii at Mānoa, Honolulu, Hawaii
  • 8Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, College of Atmospheric Science, Chengdu University of Information Technology, Chengdu, China

Abstract. Using satellite observations, reanalysis data, and model simulations, this study investigates the effect of sea surface temperature (SST) on interannual variations of lower-stratospheric ozone at southern high latitudes in austral spring. It is found that the SST variations across the East Asian marginal seas (5°S–35°N, 100–140°E) rather than the tropical eastern Pacific Ocean, where ENSO occurs, have the most significant correlation with the southern high-latitude lower-stratospheric ozone changes in austral spring. Further analysis reveals that planetary waves originating over the marginal seas in austral spring can propagate towards southern middle to high latitudes via teleconnection pathway. The anomalous propagation and dissipation of ultra-long Rossby waves in the stratosphere strengthen/cool (weaken/warm) the southern polar vortex, which produces more (less) active chlorine and enhances (suppresses) ozone depletion in the southern high-latitude stratosphere on one the hand and impedes (favors) the transport of ozone from the southern middle-latitude stratosphere to high latitudes on the other. The model simulations also reveal that approximately 17% of the decreasing trend in the southern high-latitude lower-stratospheric ozone observed over the past 5 decades may be associated with the increasing trend in SST over the East Asian marginal seas.

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Although the principal mechanisms responsible for the formation of the Antarctic ozone hole are well understood, the factors or processes that generate interannual variations in ozone levels in the southern high-latitude stratosphere remain under debate. This study finds that the SST variations across the East Asian marginal seas (5° S–35° N, 100–140° E) could modulate the southern high-latitude stratospheric ozone interannual changes.
Although the principal mechanisms responsible for the formation of the Antarctic ozone hole are...
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