| 基于改进高斯模型的哈尔滨市PM_(2.5)扩散问题实证分析 |
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| 引用本文： | 魏薇,傅丽芳.基于改进高斯模型的哈尔滨市PM_(2.5)扩散问题实证分析[J].数学的实践与认识,2014(22). |
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| 作者姓名： | 魏薇 傅丽芳 |
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| 作者单位： | 东北农业大学经济管理学院;东北农业大学理学院; |
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| 基金项目： | 国家自然科学基金(71171044);黑龙江省教育厅科研课题(11551037);东北农业大学博士科研基金 |
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| 摘 要： | 2013年初以来,国内发生大范围持续雾霾天气,我国城市PM_(2.5)的污染问题引起了社会各界的关注和重视.根据风场和气象变化对高斯扩散模型进行适当改进,并提出基于高斯模型的PM_(2.5)扩散预测模型.以哈尔滨市PM_(2.5)近期实测数据为基础进行实证分析,对市区内10个地区的PM_(2.5)扩散和浓度变化做出合理的预测.
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| 关 键 词： | PM_(2.5) 高斯扩散模型 点源 风向变化条件 坐标转换 |
An Empirical Study on the Problem of Diffusion Based on the Improved Gauss Model in Harbin City |
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| Abstract: | Since early 2013,China encountered severe fog and haze which covered all the northeast areas and lasted for several days.The problems of PM2.5 pollution and its harm to human beings had attracted more and more attention.In this paper,the conventional Gauss diffusing Model had been improved by introducing the means of coordinate transformation according to the wind direction and weather conditions.Then the empirical analysis was conducted based on measured data of PM_(2.5) in the city of Harbin,which results illustrated the validity of the Gauss diffusing Model. |
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| Keywords: | PM_(2 5) Gauss diffusing model source point wind direction and weather conditions coordinate transformation |
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