Mechanism of Formation of the Ozone Valley over the Tibetan Plateau in Summer-Transport and Chemical Process of Ozone  

青藏高原夏季臭氧低谷形成的机理——臭氧输送和化学过程

作　　者：刘煜 李维亮 周秀骥 何金海 

机构地区：[1]Nanjing Institute of Meteorology, Nanjing 210044,Chinese Academy of Meteorological Sciences, Beijing 100081 [2]Chinese Academy of Meteorological Sciences,Beijing,100081 [3]Nanjing Institute of Meteorology,Nanjing,210044

出　　处：《Advances in Atmospheric Sciences》2003年第1期103-109,共7页大气科学进展（英文版）

摘　　要：With the 3D chemical transport model OSLO CTM2, the valley of total column ozone over the Tibetan Plateau in summer is reproduced. The results show that when the ozone valley occurs and develops, the transport process plays the main part in the ozone reduction, but the chemical process partly compensates for the transport process. In the dynamic transport process of ozone, the horizontal transport process plays the main part in the ozone reduction in May, but brings about the ozone increase in June and July. The vertical advective process gradually takes the main role in the ozone reduction in June and July. The effect of convective activities rises gradually so that this effect cannot be overlooked in July, as its magnitude is comparable to that of the net changes. The effect of the gaseous chemical process brings about ozone increases which are more than the net changes sometimes, so the chemical effect is also important.With the 3D chemical transport model OSLO CTM2, the valley of total column ozone over the Tibetan Plateau in summer is reproduced. The results show that when the ozone valley occurs and develops, the transport process plays the main part in the ozone reduction, but the chemical process partly compensates for the transport process. In the dynamic transport process of ozone, the horizontal transport process plays the main part in the ozone reduction in May, but brings about the ozone increase in June and July. The vertical advective process gradually takes the main role in the ozone reduction in June and July. The effect of convective activities rises gradually so that this effect cannot be overlooked in July, as its magnitude is comparable to that of the net changes. The effect of the gaseous chemical process brings about ozone increases which are more than the net changes sometimes, so the chemical effect is also important.

关 键 词：Tibetan Plateau ozone valley dynamic transport process chemical process 

分 类 号：X515[环境科学与工程—环境工程]