项目名称: 东北地区典型城市气溶胶的化学表征及污染过程模拟研究
项目编号: No.51508224
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 其他
项目作者: 李娜
作者单位: 吉林建筑大学
项目金额: 20万元
中文摘要: 本研究通过收集研究区10个大气国控点位气溶胶浓度数据,分析和对比研究区PM2.5的质量浓度,揭示其时空分布规律,总结雾霾事件发生特征,监测其无机元素、水溶性离子和含碳组分浓度水平,初步判断气溶胶主要来源;结合气象数据和能见度,明晰气象因素对气溶胶的影响,从动力、热力方面综合探讨中低层大气稳定性与雾霾形成的关系;选用WRF-Chem模式,结合INTEX-B排放清单,选择合适参数化方案,对研究区典型气溶胶污染过程进行模拟,分析探讨了周边区域输送对研究区颗粒物污染的影响。该研究为政府部门制定相关政策规定提供了有力的理论依据,对实现区域大气环境的改善具有重要意义,结果将有助于评估雾霾事件对气候、环境、人体健康的影响,为区域雾霾污染防治提供数据支撑和保障。
中文关键词: 气溶胶;化学表征;气象条件;WRF-Chem模式;区域输送
英文摘要: The concentrations of PM2.5 in 10 atmospheric control points are collected in Changchun city. Spatial and temporal distribution is revealed by analyzing their concentrations. The sources of PM2.5 are analyzed through monitoring the concentrations of inorganic element, water soluble ion and carbon components. Based on the meteorological data and visibility, the influence of meteorological factors on aerosol is analyzed to explore the relationship between low layer atmospheric stability and haze formation from thermal and dynamic angles. WRF-Chem model is selected to simulate of typical particulate matter pollution episodes combining INTEX-B emission list and choosing appropriate parameterization scheme. The study provides a theoretical basis for government departments to formulate relevant policies and regulations. The results will help to assess the haze events on climate, environment, human health effects, provide data support and guarantee for regional haze pollution prevention.
英文关键词: Aerosol;Chemical characterization;Meteorological conditions;WRF-Chem;Regional transportation