Abstract: It has become a public concern that ozone depletion in the stratosphere would lead to increasing ultraviolet radiation on the surface. That stratospheric polar ozone depletion likely has important impacts on atmospheric circulations and climate has also been one of important topics in climate research in the past few years. Observational studies showed that in the seasons with severe ozone depletion in stratospheric polar regions, surface air temperatures have a significant tendency of warming in the past few decades, that is, surface air temperatures demonstrate warming trends over the high-latitude Europe-Asia continent during February-March and over the Antarctic Peninsula during December-May. The warming is not due to direct radiative effect of ozone depletion, instead, it is throughout dynamic processes, such as wave-mean flow and stratosphere-troposphere interactions. There have been a lot of numerical simulations on this problem. Some simulations show consistent results with observations, while others point out that the impact of ozone depletion alone is too weak, and that other forcings are also important. The author reviews the progress in this field in the past few years, summarizes these observational and simulation results, interprets the physical mechanism of stratospheric polar ozone depletion impacting on the troposphere, and clarifies controversies.

Key words: ozone depletion, global climate change, planetary waves, Arctic oscillation, wave-mean flow interaction, stratosphere-troposphere interaction

摘要： 大气平流层臭氧的严重损耗将导致到达地面的太阳紫外辐射增加已经是公共社会普遍关切的问题。最近几年，平流层臭氧损耗能否对对流层大气环流和气候产生重要影响也引起了广泛的重视，并且已成为大气科学的一个热点问题。观测研究表明近二三十年来在两极臭氧严重损耗的季节，地表气温有明显的变暖趋势，也就是欧亚大陆1—3月份和南极半岛12—5月份的地面温度呈现显著增温。这些增温趋势很可能是平流层两极的严重臭氧损耗造成的。当然，这些增温并非是由臭氧损耗的辐射效应直接造成的，而是通过波－流相互作用以及平流层－对流层相互作用等动力学过程实现的。大量的数值模拟工作也对此问题进行了研究，一些模拟结果与观测结果基本一致，另一些则发现平流层臭氧损耗的强迫作用较弱，也有模拟工作认为其他外界强迫如温室气体增加和热带海面温度升高也非常重要。作者综述了这一研究领域在近几年的最新研究进展，总结有关的观测分析和数值模拟结果，阐述平流层极地臭氧损耗可能影响地面温度的物理机制，以及澄清各种争论要点。

关键词: 臭氧损耗, 气候变化, 行星波, 北极涛动, 波－流相互作用, 平流层－对流层相互作用