An improved method for automatic determination of the planetary boundary layer height based on lidar data

An improved method for automatic determination of the planetary boundary layer height based on lidar data
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基于激光雷达数据自动确定行星边界层高度的改进方法

DOI:
10.1016/j.jqsrt.2020.107382
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发表时间:
2020-12
影响因子:
2.3
通讯作者:
Chen Sicheng
Chen Sicheng
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Li Hongxu;Chang Jianhua;Liu Zhenxing;Zhang Luyao;Dai Tengfei;Chen Sicheng

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行星边界层高度(PBLH)是表征边界层的主要参数,其准确估计是至关重要的。小波协方差变换方法是一种常用的PBLH反演算法,但存在伸缩选择困难和云、气溶胶等干扰等问题,提出了一种结合鲸鱼优化算法(WOA)和上限(TL)的改进方法,克服了这些困难,实现了PBLH的自动确定。特别地,与常用的经验整数相比,通过WOA获得的膨胀可以更精确到小数点后几位。在不同的模拟和真实的情况下对所提出的方法进行了测试,并与无线电探空测量结果进行了比较。结果表明,改进的方法是准确的,有效的和稳定的自动反演PBLH仅基于简单的微脉冲激光雷达(MPL),而无需其他测量的帮助。(C)2020爱思唯尔有限公司保留所有权利。
The planetary boundary layer height (PBLH) is a primary parameter characterizing the boundary layer and its accurate estimation is critical. The wavelet covariance transform method is a common inversion algorithm of the PBLH estimation, but is subject to the problems of dilation selection and interference from clouds, aerosols, etc. An improved method combining the whale optimization algorithm (WOA) and the top limit (TL) is proposed to overcome these difficulties and realize the automatic determination of PBLH. In particular, the dilation obtained by WOA can be more accurate, to several decimal places, compared to the frequently-used empirical integers. The proposed method is tested on different simulation and real cases, and compared with radiosonde measurements. The results show that the improved method is accurate, effective and stable for automatic retrieval of PBLH based only on simple micropulse lidar (MPL), without the aid of other measurements. (C) 2020 Elsevier Ltd. All rights reserved.
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