关于我国和东亚酸性物质的输送研究I.硫化物浓度空间分布特征及季节变化  

Studies on Transport of Acid Substance in China and East Asia Part II: Spatial Distribution of Sulfur and its Seasonal Variation

作　　者：王自发[1] 黄美元[1] 高会旺[1] 安俊岭[1] 

机构地区：[1]中国科学院大气物理研究所大气边界层物理和大气化学国家重点实验室

出　　处：《大气科学》1998年第5期693-700,共8页Chinese Journal of Atmospheric Sciences

基　　金：国家"八五"科技攻关项目

摘　　要：应用硫化物输送三维欧拉实用模式，计算和分析了我国和东亚地区二氧化硫和硫酸盐粒子的空间分布特点及季节变化，给出了年平均硫化物大气含量分布，还讨论了四种典型下垫面硫化物浓度的垂直分布廓线。结果表明，近地层硫化物浓度分布与排放源的分布类似，高值区主要在山东半岛及相邻的华北部分地区和四川盆地，在上海、台南、汉城和东京等地是小范围的高值区。地面浓度冬季大，夏季浓度小。高空分布形势与低层不同，由西南－东北走向变为东西走向。硫酸盐粒子分布高值中心少且平滑。夏季分布更加均匀化。年平均硫酸盐大气含量高值区主要集中在江淮流域，向海上延伸距离较远。四类地区硫化物垂直廓线反映了不同季节外来输送贡献。The spatial distribution and seasonal variation are analyzed for sulfur oxidate and sulfate in East Asia and China with the 3-D Euler Model for sulfur transport. The content of sulfur in air and seasonal vertical profile of sulfur for four land types are also discussed in the paper. It shows that SO 2 concentration is very sensible to the distribution of emissions' intensity on lower layers. Its high value areas locate in Shandong Peninsula, parts of the eastern China and Sichuan basin. Some small high-value-areas live scattered around large cities such as Shanghai, Taian, Seoul and Tokyo. The concentration of SO 2 on surface is higher in winter more than in summer. The pattern of distributions are different between higher and lower layer, changing from southwest-northeast pattern to west-east. But sulfate distributes smoother and smaller with a few high-value centers, especially for summer. The content of sulfur in air is crammed into the middle and lower reaches of the Changjiang River with a long nose to the East China Sea. The vertical profile of sulfur among four land types shows the different contribution of transport for various seasons.

关 键 词：硫化物 空间分布 大气含量 垂直廓线 酸性物质 

分 类 号：X16[环境科学与工程—环境科学] X511