引用本文:张玉洽,杨迎春,李杰,等.东南亚生物质燃烧对我国春季PM2.5质量浓度影响的数值模拟[J].环境科学研究,2016,29(7):952-962.
ZHANG Yuqia,YANG Yingchun,LI Jie,et al.Modeling the Impacts of Biomass Burning in Southeast Asia on PM2.5 over China in Spring[J].Reserrch of Environmental Science,2016,29(7):952-962.]
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东南亚生物质燃烧对我国春季PM2.5质量浓度影响的数值模拟
张玉洽1,2, 杨迎春1, 李 杰2, 王媛林2,3, 王自发2
1.成都信息工程大学资源环境学院, 四川 成都 610225 ;2.中国科学院大气物理研究所, 大气边界层物理与大气化学国家重点实验室, 北京 100029 ;3.中国科学院大学, 北京 100049
摘要:
为研究东南亚生物质燃烧对我国的影响,利用NAQPMS(嵌套网格空气质量预报模式系统)模拟分析了2013年3月我国及东南亚污染物质量浓度分布,以及东南亚国家生物质燃烧对我国ρ(PM2.5)的贡献. 结果表明:NAQPMS模式可较好地再现ρ(PM2.5)的时空演变规律. 在我国西南部分地区,东南亚生物质燃烧贡献与当地人为源相当,并且在ρ(PM2.5)较高时尤为明显. 东南亚生物质燃烧对我国的影响主要有两个路径:第一个路径是缅甸向云南等地的输送,对云南ρ(PM2.5)的月均贡献达到20 μg/m3(贡献率为30%),是云南本地生物质燃烧贡献的2倍左右,日均贡献甚至可达到34 μg/m3(贡献率为43%),高于我国人为源贡献(28 μg/m3)和贡献率(36%);第二个路径是老挝和越南向云南与广西交界的输送, 对南宁ρ(PM2.5)的月均贡献为10 μg/m3,日均贡献高值区间为20~40 μg/m3. 我国人为源对东南亚的影响较小,对ρ(PM2.5)月均贡献率在10%以内,主要集中在越南和东南亚南部沿海城市. 东南亚人为源对我国的影响也较小,ρ(PM2.5)月均贡献在2 μg/m3以下. 研究显示,东南亚生物质燃烧对我国特别是西南地区产生的影响不可忽视.
关键词:  生物质燃烧  东南亚  NAQPMS  跨界输送  PM2.5
DOI:
分类号:
基金项目:国家环境保护公益性行业科研专项(20130916);国家科技支撑计划项目(2014BAC06B03); 国家自然科学基金面上项目(41275138)
Modeling the Impacts of Biomass Burning in Southeast Asia on PM2.5 over China in Spring
ZHANG Yuqia1,2, YANG Yingchun1, LI Jie2, WANG Yuanlin2,3, WANG Zifa2
1.College of Resources and Environment, Chengdu University of Information Technology, Chengdu 610225, China ;2.State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China ;3.University of Chinese Academy of Sciences, Beijing 100049, China
Abstract:
Abstract: Biomass burning in Southeast Asia is receiving much attention as a significant contributor to air pollution in East Asia. A simulation in March 2013 was performed to assess the impact of biomass burning from different countries in Southeast Asia on China by a three-dimensional regional chemical transport model (NAQPMS) with an online tracer-tagged module. The model reproduced PM2.5 accurately, with correlation coefficients from 0.40-0.76 in Southern China and Southeast Asia. The results indicate that biomass burning in Southeast Asia significantly contributed to surface PM2.5 in Southwestern China, which was even comparable to local anthropogenic emissions in some regions. There were two major source regions from Southeast Asia to China in the boundary layer. In the first source region, PM2.5 was transported from Myanmar to Yunnan Province by climbing the plateau. The transported monthly mean ρ(PM2.5) reached 20 μg/m3 (30% of total PM2.5), twice the contribution of local biomass burning. In one case, regional transport from Myanmar even contributed 34 μg/m3 (43%) PM2.5, which was higher than anthropogenic emissions in China (28 μg/m3,6%). In a second one, PM2.5 emitted by biomass burning in Laos and Vietnam was transported to Yunnan and Guangxi and further up to Guizhou. Although it contributed~10 μg/m3 to monthly mean PM2.5 in Nanning, it reached 20-40 μg/m3 in transported episodes. Compared with the impact of biomass burning on China, regional transport of anthropogenic emissions in China to Southeast Asia was less (below 10%), which was in cities along the South China Sea in Vietnam. The impact of anthropogenic emissions in Southeast Asia on Southern China was below 2 μg/m3.
Key words:  biomass burning  Southeast Asia  NAQPMS  long-range transport  PM2.5