气候变化领域集成服务门户(CCPortal): A new algorithm for planetary boundary layer height calculation based on multilayer recognition

CCPortal

DOI	10.1016/j.atmosenv.2021.118919
	A new algorithm for planetary boundary layer height calculation based on multilayer recognition
	Pan Y.; Wang Q.; Ma P.; Jia X.; Liao Z.; Dou Y.; Cheng Z.; Zhang Z.; Li L.; Xin J.; Wang Y.; Quan J.
发表日期	2022
ISSN	1352-2310
卷号	271
英文摘要	Aerosol lidar is widely used in the planetary boundary layer (PBL) height calculation due to its high spatiotemporal resolution. Most of the PBL height (PBLH) algorithms for aerosol lidar are valid for single aerosol layer structure, but overestimate the PBLH under multilayer aerosol/cloud structures. To fill the gap, a new algorithm of PBLH calculation based on multilayer recognition and idealized-profile (MR-IP) is developed. In this algorithm, residual layer and/or suspended aerosol/cloud layer are first recognized based on the signal to noise ratio (SNR) of lidar, the range squared correction signal (RCS) and its gradient (∇RCS). In residual and/or suspended aerosol/cloud layer, positive and negative ∇RCS exist simultaneously, while inside the PBL only a single negative ∇RCS exists. These characteristics are used to discern residual layer and/or suspended aerosol/cloud layers. Aerosol and cloud layers are further distinguished by the ratio of RCS in the objective layer (RCS(rS)) to the mean RCS in the background layer. After multilayer recognition, the PBLH is calculated based on idealized-profile (IP) method. A yearlong (642 samples) comparison of the PBLH calculated by lidar and radiosonde verified the new algorithm in PBLH calculation under complicated structures (R = 0.81). The mean PBLH calculated by the MR-IP method is 635.4 m, consistent with the PBLH defined by radiosonde (665.3 m). Furthermore, the residual layer, suspended aerosol layer and cloud layer can also be discerned by the new algorithm. © 2021
关键词	Algorithm MR-IP Multilayer recognition PBLH
语种	英语
scopus关键词	Aerosols; Boundary layer flow; Boundary layers; Optical radar; Radiosondes; Signal to noise ratio; Aerosol clouds; Aerosol layers; Aerosol lidars; Boundary layer heights; Cloud layers; Multilayer recognition; Multilayer recognition and idealized-profile; PBL height; Planetary boundary layers; Residual layers; Multilayers; aerosol; algorithm; boundary layer; cloud; lidar; radiosonde; signal-to-noise ratio; aerosol; algorithm; article; boundary layer; calculation; major clinical study; signal noise ratio
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248084
作者单位	Institute of Urban Meteorology, CMA, Beijing, China; Beijing Meteorological Observation Centre, Beijing, China; Institude of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Pan Y.,Wang Q.,Ma P.,et al. A new algorithm for planetary boundary layer height calculation based on multilayer recognition[J],2022,271.
APA	Pan Y..,Wang Q..,Ma P..,Jia X..,Liao Z..,...&Quan J..(2022).A new algorithm for planetary boundary layer height calculation based on multilayer recognition.ATMOSPHERIC ENVIRONMENT,271.
MLA	Pan Y.,et al."A new algorithm for planetary boundary layer height calculation based on multilayer recognition".ATMOSPHERIC ENVIRONMENT 271(2022).