Experimental Study of Sulfur Oxidation Chemistry in Clouds in Eastern China

随着工业化的发展，燃烧高硫煤发电量迅速增加，使中国成为世界上最大的二氧化硫（SO2）排放国。 结果，中国的降水变得越来越酸性，硫酸盐沉积通量达到了几十年前在预先管制的欧洲和美国环境中才经历过的水平。 大量顺风酸雨和硫酸盐沉积的前景也引起韩国和日本等邻国以及北太平洋和美国西南部的担忧。 科罗拉多州立大学 (CSU) 的科学家们长期以来对云和云滴在将气相 SO2 转化为硫酸滴的过程中所发挥的作用有着浓厚的研究兴趣，他们将与中国学术和研究机构合作开展一项大型、多年的酸雨研究。 利用泰山（中国东部）现有的经常拦截云层的研究站，将开展旨在揭示这些云化学系统中二氧化硫氧化控制机制的实地研究。 该项目为科罗拉多州立大学的学生提供了重要的国际培训机会，并可能加强中美科学合作。

Rapid increases in electric power generation by combustion of high sulfur coal associated with industrialization have made China the world''s largest emitter of sulfur dioxide (SO2). As a consequence, precipitation in China is becoming increasingly acidic, and sulfate deposition fluxes are reaching levels previously only experienced many decades ago in pre-regulated European and U.S. settings. The prospect of significant downwind acid rain and sulfate deposition is also a concern to neighboring countries such as South Korea and Japan as well as the Northern Pacific and Southwestern United States. Colorado State University (CSU) scientists, who have a longstanding research interest in the role that clouds and cloud droplets play in transforming gas-phase SO2 into sulfuric acid droplets, are to team with Chinese academic and research institutions in a large, multi-year acid rain study. Taking advantage of an existing research station at Mt. Tai (eastern China) which often intercepts clouds, field campaigns designed to shed light on the controlling mechanisms of the oxidation of SO2 in these cloud chemical systems will be carried out. The project provides an important international training opportunity for CSU students and may enhance U.S.-China scientific collaborations.