华北地区逆温层与气溶胶的相互作用研究

项目名称： 华北地区逆温层与气溶胶的相互作用研究

项目编号： No.41305011

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 天文学、地球科学

项目作者： 李军

作者单位： 中国科学院大气物理研究所

项目金额： 26万元

中文摘要： 地面之上的大气逆温层阻碍了近地面层大气污染物的垂直输送扩散，使得近地大气层中气溶胶粒子、水汽和有害气体成分积聚，对大气环境污染的形成与加剧有重要的影响。我国华北地区是世界上污染最严重的地区之一，近年来频繁出现重度污染天气，深入地了解华北地区逆温层的发展规律以及逆温层与辐射和气溶胶的作用机制，不仅有助于我们正确认识逆温层对环境变化的影响，更能为我们有效控制污染，合理进行排放，进一步改善大气环境质量提供科学支撑。目前对华北地区逆温层与气溶胶的相互作用研究不多。本申请项目将利用香河站综合观测的云、辐射、气溶胶、大气温湿度廓线等观测数据分析获得华北地区逆温层的统计特征，估算逆温层对近地面气溶胶积聚的影响；分析气溶胶吸收特性的差异对逆温层生消发展过程的作用，得到参数化关系，并利用边界层模式和气候模式验证气溶胶对逆温层的影响，以期更加深入准确地了解逆温层的发展规律及逆温层、辐射和气溶胶相互作用的机制。

中文关键词： 逆温层；气溶胶；华北地区；相互作用；辐射

英文摘要： Low-level atmospheric temperature inversions create stable atmospheric conditions which constrain vertical transport and dispersion of atmospheric pollutants, suspended particles, water vapor and harmful gas near surface, and then seriously affect air quality. North China region is one of the most polluted areas in the world, severe atmospheric pollution episodes frequently occurred in recent years. Investigation of the variability of low-level temperature inversions and mechanism of interaction between inversion, radiation and aerosols in North China region not only helps us to correctly understand the impact of inversion to environment changes, but also provide a reliable basis for effectively control pollution and emissions, and to further improve the quality of atmospheric environment. Currently, little attention has been paid to the interaction between temperature inversion and aerosols in North China region. Using long-term continuous comprehensive data of cloud, radiation, aerosol, temperature/humidity profiles and surface meteorological observation at Xianghe station, we will obtain statistical characteristics of different inversions, quantitatively assess the effects of different inversion on aerosols, investigate the role of aerosol in the process of inversion formation and dissipation combined radiati

英文关键词： temperature inversion； aerosol；North China region；interaction；radiation