| 北京地区大气消光特征及参数化研究 |
| |
| 引用本文： | 陈一娜,赵普生,何迪,董璠,赵秀娟,张小玲.北京地区大气消光特征及参数化研究[J].环境科学,2015,36(10):3582-3589. |
| |
| 作者姓名： | 陈一娜 赵普生 何迪 董璠 赵秀娟 张小玲 |
| |
| 作者单位： | 中国气象局北京城市气象研究所, 北京 100089;南开大学环境科学与工程学院, 天津 300071;中国气象局北京城市气象研究所, 北京 100089;京津冀环境气象预报预警中心, 北京 100089;中国气象局北京城市气象研究所, 北京 100089;京津冀环境气象预报预警中心, 北京 100089;中国气象局北京城市气象研究所, 北京 100089;京津冀环境气象预报预警中心, 北京 100089;中国气象局北京城市气象研究所, 北京 100089;京津冀环境气象预报预警中心, 北京 100089;中国气象局北京城市气象研究所, 北京 100089;京津冀环境气象预报预警中心, 北京 100089 |
| |
| 基金项目： | 北京市自然科学基金项目(8131003);北京市科技新星计划项目(Z131109000413002,xx2013002);北京市科技计划项目(Z131100006113013);国家自然科学基金项目(41205121) |
| |
| 摘 要： | 为了研究大气消光系数的特征及规律,从2013~2014年在北京地区对大气能见度、气溶胶质量浓度、气溶胶散射系数、黑碳质量浓度、反应性气体以及气象要素开展了系统加强观测,并对已发表的气溶胶光散射吸湿增长因子f(RH)]拟合方案进行了对比,系统分析了大气消光特征和影响大气消光能力的关键因子,最终建立了大气消光系数参数化模型,探讨不同季节、不同污染条件下参数化方案的特征.结果表明,气溶胶散射作用占环境总消光作用的94%以上,在夏秋季,相对湿度可以使气溶胶的散射能力提升70%~80%.包含气溶胶质量浓度和相对湿度两个因子的参数化模型,可以较好地体现出气溶胶和相对湿度对大气消光系数的影响机制,以及消光能力的季节差异.
|
| 关 键 词： | 消光系数 散射系数 气溶胶 参数化 |
| 收稿时间： | 2015/1/26 0:00:00 |
| 修稿时间： | 2015/6/22 0:00:00 |
Characteristics and Parameterization for Atmospheric Extinction Coefficient in Beijing |
| |
| CHEN Yi-n,ZHAO Pu-sheng,HE Di,DONG Fan,ZHAO Xiu-juan and ZHANG Xiao-ling.Characteristics and Parameterization for Atmospheric Extinction Coefficient in Beijing[J].Chinese Journal of Environmental Science,2015,36(10):3582-3589. |
| |
| Authors: | CHEN Yi-n ZHAO Pu-sheng HE Di DONG Fan ZHAO Xiu-juan and ZHANG Xiao-ling |
| |
| Institution: | Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China;College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China;Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China;Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei, China Meteorological Administration, Beijing 100089, China;Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China;Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei, China Meteorological Administration, Beijing 100089, China;Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China;Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei, China Meteorological Administration, Beijing 100089, China;Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China;Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei, China Meteorological Administration, Beijing 100089, China;Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China;Environmental Meteorology Forecast Center of Beijing-Tianjin-Hebei, China Meteorological Administration, Beijing 100089, China |
| |
| Abstract: | In order to study the characteristics of atmospheric extinction coefficient in Beijing, systematic measurements had been carried out for atmospheric visibility, PM2.5 concentration, scattering coefficient, black carbon, reactive gases, and meteorological parameters from 2013 to 2014.Based on these data, we compared some published fitting schemes of aerosol light scattering enhancement factor f(RH)], and discussed the characteristics and the key influence factors for atmospheric extinction coefficient.Then a set of parameterization models of atmospheric extinction coefficient for different seasons and different polluted levels had been established.The results showed that aerosol scattering accounted for more than 94% of total light extinction.In the summer and autumn, the aerosol hygroscopic growth caused by high relative humidity had increased the aerosol scattering coefficient by 70 to 80 percent.The parameterization models could reflect the influencing mechanism of aerosol and relative humidity upon ambient light extinction, and describe the seasonal variations of aerosol light extinction ability. |
| |
| Keywords: | extinction coefficient scattering coefficient aerosol parameterization |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
