摘要
目前基于卫星遥感估算PM 2.5浓度的方法存在空间分辨率较低、PM 2.5浓度较高时估算效果不理想、城区经常出现数据缺失等尚需改进的地方。为实现城区高分辨率空气质量的精准监测,基于美国陆地卫星计划卫星Landsat 8陆地成像仪(OLI),选择对污染物最敏感的深蓝波段Band 1和最不敏感的短波红外波段Band 7,构建了差值霾指数(DHI)。结果表明:构建的DHI可实现城区高分辨率的空气质量监测(30 m分辨率);DHI不仅适用于PM 2.5浓度的监测,还可应用于空气质量指数(AQI)的监测;DHI具有较高的监测精度,与归一化差值霾指数(NDHI)和差值指数(DI)相比监测精度有较大提升。DHI简单易用,在城区的空气质量监测中具有较高的应用潜力和推广价值。
Drawbacks exist in estimating concentrations of PM 2.5 based on satellite remote sensing including low spatial resolution,low quality of estimation when PM 2.5 concentrations reach a high level and even data missing in urban areas.In order to monitor the urban air accurately with high spatial resolution,a new difference haze index(DHI)was constructed based on Landsat 8 operational land imager(OLI)for the reason that Band 1(deep blue band)was most sensitive to pollutants while Band 7(short wave band)was least sensitive.DHI could monitor the urban air with high spatial resolution(30 m resolution)and be applied to monitoring not only concentrations of PM 2.5 but also index parameters such as AQI.Compared with normalized difference haze index(NDHI)and difference index(DI),DHI was more accurate in monitoring the urban air.Simple and easy to use,DHI has great potential in application,which thus deserved further promotion.
作者
冯海霞
冯海英
杨立才
王琦
孟祥鲁
王艳峰
FENG Haixia;FENG Haiying;YANG Licai;WANG Qi;MENG Xianglu;WANG Yanfeng(School of Control Science and Engineering,Shandong University,Jinan Shandong 250100;School of Transportation and Logistics Engineering,Shandong Jiaotong University,Jinan Shandong 250023;School of Communication and Design,Beijing Technology and Business University,Beijing 102488;Highway Traffic Police Detachment of Jinan Public Security Bureau,Jinan Shandong 250000)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2021年第1期79-83,90,共6页
Environmental Pollution & Control
基金
山东省重点研发计划(公益类专项)项目(No.2019GGX101010)
山东交通学院攀登团队计划资助项目(No.SDCPF201804)
济南市科学技术局资助项目(No.2019GXRC022)
山东省交通运输厅科技计划项目(No.2020B90)。
