The Relationship between Lower Stratospheric Ozone in the Southern High Latitude and Sea Surface Temperature in the East Asia Marginal Seas
Wenshou Tian1, Yuanpu Li1, Fei Xie2, Jiankai Zhang1, Martyn P. Chipperﬁeld3, Wuhu Feng4, Sen Zhao5, Xin Zhou6, Yun Yang2, and Xuan Ma21College 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 5Key Laboratory of Meteorological Disaster of Ministry of Education, and College of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing, China 6State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
Received: 26 Nov 2016 – Accepted for review: 13 Jan 2017 – Discussion started: 19 Jan 2017
Abstract. Using satellite observations, reanalysis data, and model simulations, this study investigates the effect of sea surface temperatures (SST) on interannual variations of lower stratospheric ozone in the southern high latitude. It is found that the SST variations across the East Asian marginal seas (5 °S–35 °N, 100 °E–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. Further analysis reveals that planetary waves originating over the marginal seas can be propagated to southern middle to high latitudes via two teleconnection pathways in summer and one pathway in autumn. 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 hand, and impedes (favors) the transport of ozone from the southern middle latitude stratosphere to high latitude 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 five decades can be attributed to the increasing trend in SST over the East Asian marginal seas.
Tian, W., Li, Y., Xie, F., Zhang, J., Chipperﬁeld, M. P., Feng, W., Zhao, S., Zhou, X., Yang, Y., and Ma, X.: The Relationship between Lower Stratospheric Ozone in the Southern High Latitude and Sea Surface Temperature in the East Asia Marginal Seas, Atmos. Chem. Phys. Discuss., doi:10.5194/acp-2016-1053, in review, 2017.