近30年青藏高原臭氧总量亏损的可能原因及其与对流层顶高度的联系  

Possible Causes of Total Ozone Depletion over the Qinghai-Xizang Plateau and Its Relation to Tropopause Height in Recent 30 Years

作　　者：周顺武[1] 杨双艳[1,2] 张人禾[2] 李慧[1] 王美蓉[1] 

机构地区：[1]南京信息工程大学气象灾害省部共建教育部重点实验室,江苏南京210044 [2]中国气象科学研究院灾害天气国家重点实验室,北京100081

出　　处：《高原气象》2012年第6期1471-1478,共8页Plateau Meteorology

基　　金：国家重点基础研究发展规划项目(2010CB428505;2010CB428605;2012CB955204);国家自然科学基金项目(41275095);中国气象局成都高原气象研究所开放实验室基金项目(LPM2011015)共同资助

摘　　要：基于总臭氧测绘光谱计TOMS和太阳向后紫外线散射仪SBUV结合得到的30年(1979-2008年)全球月平均臭氧总量资料,首先分析了近30年青藏高原(下称高原)上空臭氧总量的下降趋势,然后讨论了高原动力抬升作用对臭氧总量的影响,最后探讨了高原臭氧总量亏损与高原对流层顶高度的联系。结果表明,高原臭氧总量及其下降趋势均存在着明显的季节差异,与同纬度非高原区相比,高原地区各月的臭氧总量均偏低,特别是在3-9月臭氧亏损严重;近30年高原地区臭氧总量在各季节均呈现出下降趋势,除了秋季外,其下降幅度均超过同纬度其他地区;春、夏季高原动力抬升有利于对流层低浓度的臭氧含量向平流层输送,从而导致高原臭氧总量的减少。近30年春、夏季高原臭氧总量亏损与夏季高原第二对流层顶高度的抬升存在着密切关系。Using the monthly total ozone data from the Total Ozone Mapping Spectrometer and the Solar Backscatter Ultraviolet Radiometer from 1979to 2008,the total ozone depletion over the Qinghai-Xizang Plateau is revealed,and the influences of the terrain lifting activities on total ozone are discussed.Finally,the influence of the total ozone depletion on the lifting at tropopause height of the Qinghai-Xizang Plateau is analyzed.The results suggest that there are significant seasonal differences both total ozone over the Qinghai-Xizang Plateau and its declining trend.What′s more,comparing with the same latitude but nomountain region,the total ozone amount over the Qinghai-Xizang Plateau is lower in each month,especially from March to September.The lose is serious.In recently 30 years,the total ozone over the QinghaiXizang Plateau declines in each season and the decline range is larger than no-mountain region except for autumn.The strong upward movement over the Qinghai-Xizang Plateau in spring and summer is conducive to transport the low concentration ozone from troposphere to the stratosphere,resulting in the decrease of the total ozone.There are close relations between the losses of total ozone in spring and summer and the uplift of the second tropopause height in summer over the Qinghai-Xizang Plateau in recent 30 years.

关 键 词：青藏高原 臭氧总量 亏损 动力抬升 对流层顶高度 

分 类 号：P465[天文地球—大气科学及气象学]