四川省上空臭氧时空变化分析  

Analysis on the Spatial-temporal Distribution Characteristics of O_3 over Sichuan Province

作　　者：张娟[1] 刘志红[1] 向卫国[2] 何沐全 张洋 黄一航 

机构地区：[1]成都信息工程大学资源环境学院,成都610225 [2]成都信息工程大学大气科学学院,成都610225 [3]中国科学院遥感与数字地球研究所,北京100101

出　　处：《四川环境》2017年第6期45-52,共8页Sichuan Environment

基　　金：四川省科技支撑计划项目;四川盆地城市群大气复合污染"诊断"与联防联控模拟研究(2015GZ0241)

摘　　要：以OMI卫星的OMITO3e臭氧总量日产品为基础,分析2005~2015年间四川省上空O_3时空分布特征。结果表明:(1)空间上,区域内近10年O_3累计值大体呈现北高南低、东高西低的分布格局。O_3高值区主要分布在以广元、巴中、南充、达州四个城市为核心的川北城市群以及四川盆地中央。低值区分布在甘孜藏族自治州、凉山彝族自治州以及攀枝花地区。(2)时间上,2006~2009年有明显的下降,2015年O_3增加幅度尤为突出;季节上表现为O_3春夏高、秋冬低;月变化特征表现为,O_3最高值出现在春季的4月,最低值出现在秋季的10月。(3)四川省上空臭氧时空分布受太阳辐射、地形、云量、源等各种因素影响。Spatial-temporal distribution and variation characteristics of O3 in Sichuan in 2005 - 2015 was analyzed using OMITO3 e total Ozone Products. Results showed that： 1. Spatially, the cumulative value of O3 in the past 11 years was high in the north and East, and low along the south and the west. The annual mean O3 of prefecture-level cities in the high-value region is mainly distributed in the central Sichuan Basin city group and in the northern Sichuan taking Guangyuan, Bazhong, Nanchong, Dazhou as the core. The annual mean O3 in the low-value region is mainly distributed in the Ganzi Tibetan Autonomous Prefecture and Liangshan Yi Autonomous Prefecture and Panzhihua region. 2. Temporally, the O3 from 2006 to 2009 showed a declining trend, and the increasing amplitude in 2015 is obvious. Also the average O3 is high in spring and summer, and low in autumn and winter. The monthly mean O3 is high in April, and low in October. 3. The temporal and spatial distribution of O3 over the Sichuan is affected by solar radiation, terrain, cloud fraction, source and other factors.

关 键 词：OMI O3 时空变化 云量 

分 类 号：X51[环境科学与工程—环境工程]