Modeling atmospheric aerosols in East Asia and interactions with clouds and climate

全球变化科学紫荆论坛第207期

报告题目： Modeling atmospheric aerosols in East Asia and interactions with clouds and climate

报告时间：2017年8月22日（周二）10:00-12:00

报告地点：清华大学蒙民伟科技大楼南楼818

主讲人：刘小红 教授  中国科学院大气物理研究所 美国怀俄明大学

主讲人简介：

    刘小红博士，美国怀俄明大学冠名首席教授（“Wyoming Excellence Chair” Professor）、中国科学院大气物理研究所研究员。入选国家”千人计划”专家。从事研制、开发和评估地球系统模式中大气气溶胶－大气化学模式和云物理参数化方案，以及气溶胶、云及降水相互作用、气溶胶气候效应的研究。是美国国家大气科学研究中心（NCAR）公用地球系统模式（Community Earth System Model (CESM) ）核心发展成员，领导研制了CESM中气溶胶－大气化学模型、气溶胶与冷云相互作用的参数化方案，目前是NCAR CESM Chemistry-Climate工作组的共同主席。现任学术刊物“Atmospheric Chemistry and Physics” 、“Journal of Meteorological Research” 编委。已发表学术论文160余篇（含130篇SCI文章），被引用率6000余次（Web of Science）和9000余次（Google Scholar）。于2014、2015和2016年三次入选Thomson-Reuters的“全球高引用学者”，2001年获世界气象组织青年科学家奖，1996年入选德国洪堡学者，1996-1999年入选中科院“百人计划”。

讲座简介：

Emissions of anthropogenic aerosols and gas precursors in China have increased substantially over the past three decades with the rapid economic growth. These increases might have serious consequences for the regional and global climate change, air quality degradation and health problem. However, current generation global aerosol-climate models show the large biases in simulating aerosol distribution and magnitude in China, highlighting the difficulties and complexities of aerosol modeling in this region. In this study, using the NCAR Community Atmosphere Model version 5 (CAM5) with the Modal Aerosol Module (MAM) we investigate several possible factors behind the large aerosol biases in China, including (1) anthropogenic aerosol and precursor gas emissions, and (2) representation of important aerosol components (e.g., nitrate) and processes (e.g., secondary formation). In addition, East Asia is subject to influence of dust aerosols from Asian Deserts. We evaluate CAM5 simulated vertical profiles of dust extinction in East Asia and dust long-range transport across the Pacific by comparing with the CALIOP satellite observations. Model biases and implications for aerosol-cloud-climate interactions will be discussed.