东亚硫酸盐及黑碳污染特征数值模拟  

Numerical Simulation of Sulfate and Black Carbon Pollution in East Asia

作　　者：李本纲[1] 王晓利[1] 雷瑞雪[1] 李新月[1] 李玮[1] 付博[1] LI Bengang;WANG Xiaoli;LEI Ruixue;LI Xinyue;LI Wei;FU Bo(MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing 100871, China)

机构地区：[1]北京大学城市与环境学院地表过程分析与模拟教育部重点实验室,北京100871

出　　处：《环境科学与技术》2018年第5期138-145,共8页Environmental Science & Technology

基　　金：国家自然科学基金资助项目(41371443)

摘　　要：硫酸盐和黑碳是全球气候变化重要的驱动因子,且两者直接辐射效应相反。该研究利用WRF/Chem模型及2010EDGAR/HTAP V2排放清单,模拟2010年东亚地区硫循环及硫酸盐、黑碳的时空分布特征。结果表明:2010年东亚大气硫的平均生命周期为4.04 d。大气硫通过沉降去除,以湿沉降为主,主要通过硫酸盐形式去除。中国是东亚硫和黑碳的净输出国,其余4国为净输入国。东亚硫酸盐和黑碳年均柱浓度均华中最高,蒙古最低,硫酸盐柱浓度分布相对SO2排放强度表现出东向溢出效应,尤其是春季和冬季。东亚硫酸盐夏季柱浓度最高,主要与夏季SO2氧化率高、云内氧化率Kw高有关。东亚黑碳春季柱浓度最高,不仅与黑碳人为排放有关,还与生物质燃烧排放相关。Sulfate and BC aerosol are important but opposite driving factors to global climate change. A modified WRF/Chem model and 2010 EDGAR/HTAP V2 inventory were used to simulate the sulfate and BC formation and distribution over East Asia in 2010. The study showed that the turnover time of sulfur was calculated to be 4.04 d and sulfur was removed mainly by wet deposition, mainly as sulfate. China was a net exporter of sulfur and black carbon in East Asia, and the remaining four countries were net importers. The peak sulfate column concentration and BC column concentration were found to occur in Central China, while the minimum sulfate column concentration and BC column concentration occurred in Mongolia. Obvious eastward overspill effect of sulfate was showed, especially in spring and winter. Modeled sulfate column concentration in summer was higher than that in spring, autumn and winter, mainly due to high oxidation rate and in-cloud oxidation rates Kw in summer. Modeled BC column concentration in spring was the highest, which was not only related to anthropogenic emissions, but also related to biomass burning emissions.

关 键 词：硫酸盐 黑碳 WRF/Chem 大气硫循环 柱浓度 

分 类 号：X131.1[环境科学与工程—环境科学]