项目名称: 海源有机物排放及其对大气气溶胶特性影响的研究
项目编号: No.41275130
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 赖森潮
作者单位: 华南理工大学
项目金额: 78万元
中文摘要: 海源有机物的排放会影响沿海地区大气气溶胶的浓度、化学组成和性质等,进而影响区域空气质量。目前我国依然缺乏对海源有机物排放及其对沿海地区大气环境影响的系统研究。本研究拟以南海海域为研究区域,开展海源有机物(包括海源一次有机气溶胶和海源挥发性有机物)排放的估算并研究其对华南沿海地区大气气溶胶特性的影响。本研究将通过实验室模拟和实地观测等手段研究南海海域主要浮游植物种类排放海源有机物的能力。在此基础上,利用卫星遥感海洋叶绿素数据,开展海源一次有机气溶胶和海源挥发性有机物排放的估算。同时应用通用多尺度空气质量模型(CMAQ),通过不同情境的模拟,研究海源有机物排放对南海沿海地区大气气溶胶特性的影响。本研究旨在为全面深入研究海源有机物的排放来源、强度、对海洋边界层大气化学过程和对区域大气环境的影响等提供基础数据和理论支持。
中文关键词: 南海;有机气溶胶;挥发性有机物;长距离传输;通用多尺度空气质量模型
英文摘要: Marine organics have considerable influence on the concentrations, chemical compositions, chemical and physical properties of atmospheric aerosols as well as the regional air quality in the coastal area. Till now research on marine organic emissions and its impact on the air quality in the Chinese coastal region is scarce. This project is proposed (1)to conduct estimation of marine organic emissions including marine primary organic aerosols (MPOA) and marine volatile organic compounds (MVOCs) over the South China Sea (SCS), and (2)to analyze the contribution of marine organics to atmospheric aerosols in the coastal region of South China. Laboratory simulation and on-site measurement will be conducted to investigate the capability of organic emissions from major phytoplankton species in SCS. Based on the relationship between marine organics and phytoplankton, satellite images of chlorophyll-a will be used to classify the phytoplankton species and to estimate the emissions of marine organics (MPOA and MVOCs) over the SCS. Furthermore, marine organic emissions are implemented into the community multi-scale air quality model (CMAQ) and to analyze the contribution of marine organics to coastal atmospheric aerosols in South China under different senarios.
英文关键词: South China Sea;Organic Aerosol;Volatile Organic Compounds;Long-range Transport;CMAQ