2001年春季临安、昆明和香港臭氧垂直分布特征的对比分析

利用2001年3月到4月上旬在中国临安、昆明和香港特别行政区进行臭氧探测获得的资料，对这3个地点的臭氧垂直分布特征进行了分析与对比，发现3个地点的臭氧分布特征既有相同点，也有不同点。其主要不同点有，最大臭氧分压和所处高度不同；临安10～16km高度的臭氧浓度远远大于昆明与香港；在对流层低层，香港有一特别突出的高臭氧浓度层，昆明次之；临安对流层的中上层没有像昆明和香港出现的臭氧低值区现象。根据NCEP分析资料给出的2001年3月的背景大气环流特征表明不同的大气环流有不同的臭氧垂直分布特征，临安地区易受北方冷气团的影响，昆明和香港则受低纬度暖湿气团影响较大；对流层高层的副热带急流对3个地点臭氧垂直分布也有不同的影响。

Comparison of Characteristics of Ozone Vertical Distribution above Lin'an,Kunming,and Hong Kong during Spring 2001

The ozone experiment at three sities (LinAn, KunMing and Hong Kong) was simultaneously conducted for the first time in China during March-April 2001. Based on the ozone data obtained by this experiment and the ozone sounding data of Hong Kong from 1994 to 2000, we analyzed and compared the characteristics of ozone vertical distribution above these three sites. The results show that there exist different and general characteristics among the three sites ozone vertical distributions. The main difference of the three sites ozone vertical distributions is as follows: both the maximum ozone partial pressure and its altitude are different; the ozone concentration at 10～16km height of Lin'an is much higher than that of Kunming and Hong Kong; there exists one high ozone concentration layer over the Hong Kong and Kunming, but Hong Kong is more obvious; in the upper troposphere there is no lower ozone distribution over Lin'an. Based on the NCEP analyzed data, the atmospheric circulations of March 2001 reveals that the different atmospheric circulations can lead to the different ozone vertical distribution above these three sites.