文献类型：期刊文献

英文题名：Evaluation of unmanned aerial system in measuring lower tropospheric ozone and fine aerosol particles using portable monitors

作者：Li, Xiao-Bing[1,2];Peng, Zhong-Ren[1,3,4];Lu, Qing-Chang[5];Wang, Dongfang[6];Hu, Xiao-Ming[7];Wang, Dongsheng[1];Li, Bai[1];Fu, Qingyan[6];Xiu, Guangli[8];He, Hongdi[1]

机构：[1]Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, State Key Lab Ocean Engn, Ctr Intelligent Transportat Syst & Unmanned Aeria, Shanghai 200240, Peoples R China;[2]Jinan Univ, Inst Environm & Climate Res, Guangzhou 510632, Peoples R China;[3]Univ Florida, Dept Urban & Reg Planning, POB 115706, Gainesville, FL 32611 USA;[4]Shanghai Jiao Tong Univ, China Inst Urban Governance, Shanghai 200240, Peoples R China;[5]Changan Univ, Sch Elect & Control Engn, Xian 710064, Shaanxi, Peoples R China;[6]Shanghai Environm Monitoring Ctr, Shanghai 200030, Peoples R China;[7]Univ Oklahoma, Sch Meteorol, Ctr Anal & Predict Storms, Norman, OK 73072 USA;[8]East China Univ Sci & Technol, Res Ctr Risk Assessment & Control Hazardous Chem, Shanghai 200237, Peoples R China

年份：2020

卷号：222

外文期刊名：ATMOSPHERIC ENVIRONMENT

收录：;EI(收录号：20194907787099);WOS:【SCI-EXPANDED(收录号:WOS:000510946800055)】；

基金：This study is supported by the National Key R&D Program of China (grant numbers: 2016YFCO200500), the Shanghai Municipal Bureau of Ecology and Environment (grant numbers: 2014-8), the National Planning Office of Philosophy and Social Science (grant numbers: 16ZDA048), and National Natural Science Foundation of China (grant numbers: 11672176). We express our sincere appreciation to the Second Surveying and Mapping Institute of Zhejiang Province for their help in flying the UAS. We are also very grateful for the help from No. 38 institute of China Electronics Technology Group Company in operating the tethered airship platform. The authors would like to thank the personnel who participated in the field experiments. We also appreciate two anonymous reviewers' insightful suggestions which helped greatly to improve our work.

语种：英文

外文关键词：Vertical profiling; Low cost sensors; Air pollution monitoring; Platform evaluation; Drone application

摘要：Portable air pollutant monitors onboard unmanned aerial systems (UAS) are increasingly being used to make vertical observations within the lower part of the troposphere. An overall evaluation of the UAS platform is critical before its wide application. To our knowledge, these evaluations have rarely been reported. This study is aimed at evaluating the performance of a fixed-wing UAS platform that is deployed with portable ozone (O-3) and fine particulate matter (PM2.5) monitors. A tethered airship platform deployed with conventional O-3 and PM2.5 monitors was used as a reference method to evaluate the UAS platform. To obtain custom calibration factors, the portable monitors were evaluated primarily with respect to corresponding conventional monitors at the ground level in three atmospheric environments. Then, the UAS assessment experiment was conducted over a coastal area in Shanghai, China. Seven statistical metrics were used to assess the performance of the portable monitors on the UAS platform. The results revealed that the portable monitors were capable of accurately capturing temporal variations in air pollutant concentrations after custom calibrations. The UAS platform could also accurately capture the vertical variations in O-3 and PM2.5 concentrations within the lower troposphere. However, significant discrepancies between the UAS and airship platforms were observed for both O-3 and PM2.5 measurements within the planetary boundary layer (PBL). The relative humidity (RH) values measured in this layer demonstrated significantly larger vertical variations and were substantially larger than those above the PBL. The discrepancies between the two platforms were associated mainly with horizontal variations in the UAS measurements over the experimental area, as well as large vertical variations in ambient temperature and RH within the lower troposphere.