中文摘要：

利用卫星紫外仪器TOMS、OMI和TOU的臭氧总量数据（1979—2014年），研究了全球及关键地区臭氧总量的分布及变化。讨论了南北半球臭氧总量分布和变化的差异，探讨了影响臭氧分布和变化的可能因子。重点分析了中国区域、青藏高原和极地的臭氧变化。并利用FY-3数据对南极臭氧洞和北极臭氧低值进行了监测。结果表明，臭氧总量的分布和变化在中高纬度地区具有很强的不均匀·眭，极地臭氧损耗依然明显，青藏高原的臭氧增长大于同纬度其他地区，其机制更加复杂。

英文摘要：

Global and regional distributions and variations of the total column ozone are studied based on the total column ozone （TCO） data during the period from 1979 to 2014 obtained with different space-borne instruments including TOMS （the total ozone mapping spectrometer） series, OMI （the ozone monitoring instrument） and TOU （the total ozone unit） series. The distributions and variations of the total column ozone over the globe and some key regions are considered. The TCO differences of distributions and variations （DAV） between the Northern and Southern Hemisphere are analyzed and the possible impact factors on the TCO DAV are identified. Special attentions are focused on the ozone variations in China, the Tibetan Plateau and the Polar regions. The monitoring of the Antarctic ozone hole and the Arctic ozone is also conducted using the FY-3 satellite data. It is shown that the TCO DAV sees a very nonuniform nature in the middle and high latitudes and in polar regions. The ozone loss over the polar regions continues to exist. In the Tibetan Plateau, the TCO variation is larger than in other regions of the same latitude. The mechanism of the ozone variation over the Tibetan Plateau is complicated.