摘要
利用1979-2002年TOMS卫星观测资料，采用臭氧总量纬向偏差和区域强迫的分析方法，研究北大西洋东北部大气臭氧低值与北太平洋西北部臭氧高值的季节变化过程和相互关系。研究表明，（1）北大西洋东北部存在一个大气臭氧极小值，年平均臭氧总量比纬向平均值低20DU以上，冬季低50DU以上；北太平洋西北部存在一个大气臭氧极大值，年平均臭氧总量比纬向平均值高35DU以上，冬季高70DU以上。（2）上述两个地区大气臭氧的季节变化具有很强的区域特征，区域大气动力学输送和化学过程对上述两个地区大气臭氧季节变化的强迫分别为50．3％和42．6％。（3）上述两个地区大气臭氧纬向偏差的季节变化间存在很好的反相关，相关系数达到-0．98，说明其臭氧区域强迫之间存在良好的关系。
Atmospheric ozone plays important roles in the global climate and environment change, and directly protects our human beings from the harmful solar UV radiation. The ozone destruction has been found globally since the start of ozone observation. CFCs and Halogens etc. are identified as the ozone depleting substances （ODS）, and the nations signed international protocols to phase out the ODS. This effort would result in a global ozone recovery in this century. This article is attempting to analyze the ozone distribution and seasonal variation over the North Atlantic and the North Pacific, using the 1979 - 2002 TOMS data. It will benefit our understanding of global and regional ozone distribution and variation, and the future ozone recovery. Based on our study, the minimum and maximum ozone concentrations are located over the northeast of the North Atlantic and northwest of the North Pacific, respectively. The regional ozone distributions and variations, defined by the ozone zonal deviation, show the ozone minimum and maximum over both the above regions and illustrate a dominating pattern at the NH middle - high latitudes in winter. The analysis shows regional forcing of dynamics and chemistry processes as 50. 3% and 42. 6% to the seasonal ozone variations over the northeast of the North Atlantic and northwest of the North Pacific. The seasonal variations of zonal ozone deviation over the above minimum and maximum ozone regions have a close relation, with correlation coefficient -0. 98. This may indicate a close link between the regional forcings of dynamic and chemical processes to ozone over both the regions.
出处
《大气科学》
CSCD
北大核心
2006年第5期905-912,共8页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金资助项目40375041
关键词
大气臭氧
北半球
中高纬度
纬向不均匀性
atmospheric ozone, NH middle-high latitudes, zonal inhomogeneity
作者简介
邹捍，男，1959年出生，研究员，主要从事大气臭氧和青藏高原、极地大气过程研究。E—mail：zouhan@mail．iap．ac．cn
