Simultaneous Extraction of Planetary Boundary-Layer Height and Aerosol Optical Properties from Coherent Doppler Wind Lidar

被引：6
|
作者：
Chen, Yehui [1 ,2 ,3 ]
Jin, Xiaomei [1 ,3 ]
Weng, Ningquan [1 ,3 ]
Zhu, Wenyue [1 ,3 ]
Liu, Qing [1 ,3 ]
Chen, Jie [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, HFIPS, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Grad Sch, Sci Isl Branch, Hefei 230026, Peoples R China
[3] Adv Laser Technol Lab Anhui Prov, Hefei 230037, Peoples R China
来源：
SENSORS | 2022年 / 22卷 / 09期
关键词：
planetary boundary layer (PBL); aerosol extinction coefficient (AEC); aerosol optical depth (AOD); wavelet covariance transform (WCT); dilation operation; PARTICULATE MATTER; WUHAN; CHINA; RADIOSONDE; DEPTH;
D O I：
10.3390/s22093412
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Planetary boundary-layer height is an important physical quantity for weather forecasting models and atmosphere environment assessment. A method of simultaneously extracting the surface-layer height (SLH), mixed-layer height (MLH), and aerosol optical properties, which include aerosol extinction coefficient (AEC) and aerosol optical depth (AOD), based on the signal-to-noise ratio (SNR) of the same coherent Doppler wind lidar (CDWL) is proposed. The method employs wavelet covariance transform to locate the SLH and MLH using the local maximum positions and an automatic algorithm of dilation operation. AEC and AOD are determined by the fitting curve using the SNR equation. Furthermore, the method demonstrates the influential mechanism of optical properties on the SLH and MLH. MLH is linearly correlated with AEC and AOD because of solar heating increasing. The results were verified by the data of an ocean island site in China.
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页数：11
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