| 上海霾与非霾期间大气颗粒物光学特性垂直分布特征和质量浓度对比研究 |
| |
| 引用本文： | 徐婷婷,陈勇航,赵兵科,张华,成天涛,孙冉,丁明月,顾非凡.上海霾与非霾期间大气颗粒物光学特性垂直分布特征和质量浓度对比研究[J].环境科学学报,2016,36(5):1558-1565. |
| |
| 作者姓名： | 徐婷婷 陈勇航 赵兵科 张华 成天涛 孙冉 丁明月 顾非凡 |
| |
| 作者单位： | 1. 东华大学环境科学与工程学院, 上海 201620;2. 上海市大气颗粒物污染防治重点实验室, 上海 200433,东华大学环境科学与工程学院, 上海 201620,中国气象局上海台风研究所, 上海200030,中国气象局国家气候中心, 北京 100081,上海市大气颗粒物污染防治重点实验室, 上海 200433,东华大学环境科学与工程学院, 上海 201620,东华大学环境科学与工程学院, 上海 201620,东华大学环境科学与工程学院, 上海 201620 |
| |
| 基金项目： | 国家自然科学基金(No.41575002);上海市气象与健康重点实验室开放基金;上海市大气颗粒物污染防治重点实验室开放课题;2013绿苗计划(No.77) |
| |
| 摘 要： | 采用美国国家航空航天局的云-气溶胶激光雷达红外开拓者卫星搭载的正交极化云-气溶胶激光雷达数据产品,包括消光系数、光学厚度、总后向散射系数、体积退偏比和色比,结合地面监测的颗粒物质量浓度,分析上海大气相对湿度小于80%霾发生期间气溶胶光学属性的垂直分布特征和颗粒物质量浓度变化,并与非霾期间进行比较.结果表明:霾期间532 nm和1064 nm消光系数在垂直高度上(海拔:0~10 km)均大于非霾期间,且大多数霾期间颗粒物在整层大气的光学厚度大于非霾期间.在近地面,霾期间大气颗粒物散射能力大于非霾期间.各垂直高度层,霾与非霾期间小粒径和规则气溶胶占主导地位.霾期间近地面大粒径颗粒物在霾期间所占比例大于非霾期间;2.0~4.0 km高度层,霾和非霾期间细颗粒所占比例接近;4.0~10.0 km高度层,霾期间细颗粒气溶胶所占比例大于非霾期间.PM1、PM2.5和PM10质量浓度在霾期间均大于非霾期间,且霾期间细颗粒物所占比例明显增加.颗粒物质量浓度和比值PM1/PM2.5和PM2.5/PM10分别随霾污染程度的加重而升高.冬季颗粒物质量浓度最高,主要来自细颗粒物的贡献;而春季PM10质量浓度高于其它季节.
|
| 关 键 词： | 霾 消光系数 532 nm后向散射系数 体积退偏比 色比 |
| 收稿时间： | 2015/6/26 0:00:00 |
| 修稿时间： | 2015/11/4 0:00:00 |
Comparison of vertical distribution of optical properties and mass concentration of ambient particles between haze and non-haze periods in Shanghai |
| |
| XU Tingting,CHEN Yonghang,ZHAO Bingke,ZHANG Hu,CHENG Tiantao,SUN Ran,DING Mingyue and GU Feifan.Comparison of vertical distribution of optical properties and mass concentration of ambient particles between haze and non-haze periods in Shanghai[J].Acta Scientiae Circumstantiae,2016,36(5):1558-1565. |
| |
| Authors: | XU Tingting CHEN Yonghang ZHAO Bingke ZHANG Hu CHENG Tiantao SUN Ran DING Mingyue and GU Feifan |
| |
| Institution: | 1. College of Environmental Science and Engineering, Donghua University, Shanghai 201620;2. Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3), Shanghai 200433,College of Environmental Science and Engineering, Donghua University, Shanghai 201620,Shanghai Typhoon Institute of China Meteorological Administration, Shanghai 200030,National Climate Center of China Meteorological Administration, Beijing 100081,Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention(LAP3), Shanghai 200433,College of Environmental Science and Engineering, Donghua University, Shanghai 201620,College of Environmental Science and Engineering, Donghua University, Shanghai 201620 and College of Environmental Science and Engineering, Donghua University, Shanghai 201620 |
| |
| Abstract: | Using Level 1 and Level 2 data obtained from Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) satellite of National Aeronautics and Space Administration (NASA), the vertical profile of ambient aerosols during haze and non-haze periods with relative humidity less than 80% in Shanghai were analyzed. The correlation between optical properties and mass concentration were presented by analysis of extinction efficient, optical thickness, total attenuated backscatter coefficient, volume depolarization ratio, total attenuated color ratio and particle mass concentration during haze periods, and then compared with those during non-haze periods. The result showed that during haze periods the extinction efficient of 532 nm and 1064 nm and aerosol optical thickness were larger than that during non-haze periods within altitude of 0~10 km. During the altitude of 0~10 km, the fine and regular particles were dominant during haze and non-haze periods. Aerosols were mainly accumulated near the ground within 0~2 km. During haze periods, the proportion of fine particles was less within 0~2 km and similar as in non-haze periods in attitude range of 2~4 km. The concentrations of PM1, PM2.5 and PM10 and the percentage of fine particles were higher. PM concentrations and the values of PM1/PM2.5 and PM2.5/PM10 increased along with increasing in haze intensity. The mean concentrations of PM1 and PM2.5 were the highest and percentage of fine particle increased significantly in winter while PM10 concentration was the highest in spring. |
| |
| Keywords: | haze extinction coefficient 532 nm total attenuated backscatter coefficient volume depolarization ratio total attenuated color ratio |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学学报》浏览原始摘要信息 |
| 点击此处可从《环境科学学报》下载免费的PDF全文 |
|
