基于多普勒激光雷达的青岛地区大气物质边界层高度反演与分析  

Atmospheric Material Boundary Layer Height Retrieval and Analysis in Qingdao Based on Doppler Lidar

作　　者：王俊博 王筱晔 任超 孙康闻 尹嘉萍 范梦奇 戴光耀[1,4] 吴松华 Wang Junbo;Wang Xiaoye;Ren Chao;Sun Kangwen;Yin Jiaping;Fan Mengqi;Dai Guangyao;Wu Songhua(College of Marine Technology,Faculty of Information Science and Engineering,Ocean University of China,Qingdao 266100,Shandong,China;Beijing Aviation Meteorological Institute,Beijing 100085,China;Qingdao Leice Transient Technology Co.,Ltd.,Qingdao 266100,Shandong,China;Laoshan Laboratory,Qingdao 266237,Shandong,China;Institute for Advanced Ocean Study,Ocean University of China,Qingdao 266100,Shandong,China)

机构地区：[1]中国海洋大学信息科学与工程学部海洋技术学院,山东青岛266100 [2]北京航空气象研究所,北京100085 [3]青岛镭测创芯科技有限公司,山东青岛266100 [4]崂山实验室,山东青岛266237 [5]中国海洋大学海洋高等研究院,山东青岛266100

出　　处：《光学学报》2024年第6期64-78,共15页Acta Optica Sinica

基　　金：崂山实验室科技创新项目(LSKJ202201202)。

摘　　要：为了提升大气物质边界层高度(AMBLH)的识别准确性,基于2020年11月至2021年11月在青岛开展的大气边界层(ABL)观测实验,提出了一种基于相干多普勒激光雷达(CDL)信噪比数据的AMBLH的综合反演方法,并应用此方法反演得到了青岛地区的AMBLH,其与探空仪反演结果的相关度为0.93。分析了青岛一年内的AMBLH发展情况,发现各月份AMBLH均有日变化特征,其中6、7月特征相对较弱,推测这与夏季来自海洋的东南风盛行有关。AMBLH月均值在全年呈起伏波动趋势,在冬末至春初、夏末至秋初的阶段逐步增大。AMBLH月均中位数4月最高、6月最低,AMBLH季度发展程度由高到低的顺序为春季、冬季、秋季、夏季,其中春季和冬季高度相近。AMBLH各季度日变化中抬升趋势出现的时间为夏季早于春季,秋季与春季相近并早于冬季。Objective The atmospheric boundary layer(ABL)is the lowest layer in the troposphere,which is relatively more uniformly mixed under the influence of the ground-air interaction.This layer is directly affected by surface forcing during the interaction between the surface and the atmosphere,and its response time is less than one hour,usually in the range of 100‒3000 m.Meteorological elements in ABLs have obvious diurnal changes,and there are multiple scales of motion,with turbulence as the main form.ABL greatly affects people s production,life,and other activities.ABL height(ABLH)has high research significance in meteorology and other related fields.A high concentration of aerosol and water vapor in ABL contrasts significantly with a free atmosphere that is above the ABL.From the perspective of substance distribution,the atmospheric material boundary layer(AMBL)and atmospheric material boundary layer height(AMBLH)can be determined.AMBL is a part of ABL,and the characteristics of AMBLH are similar to that of ABLH but they have differences.AMBLH mainly reflects the spread of atmospheric substances and pollution in ABLs,but it is not capable of representing all turbulent motion in ABLs.ABL is closely related to air pollution,in which turbulence has a diffusion and mixing effect on air pollutants.ABLH is negatively correlated with the concentration of pollutants near the ground,and heavy pollution is often accompanied by a lower ABLH.Traditional observation techniques include radiosondes,meteorological towers,airplanes,etc.,which can realize direct observation of the profile of meteorological elements and ensure the accuracy and credibility of the inversion.However,limited by cost and observation methods,such means fail to achieve long-term and continuous observation.With the development of remote sensing technology and its application in the field of meteorology,ground-based remote sensing equipment such as lidar,microwave radiometer,ceilometer,and sodar has shown their advantages in ABL observation.As an efficient gr

关 键 词：大气光学 相干多普勒激光雷达 大气物质边界层高度 综合反演方法 

分 类 号：TN958[电子电信—信号与信息处理]