基于激光雷达组网的沙尘过程研究（封面文章）

doi:10.3969/j.issn.1673-6141.2025.06.006

大气与环境光学学报 ›› 2025, Vol. 20 ›› Issue (6): 752-765.doi: 10.3969/j.issn.1673-6141.2025.06.006

基于激光雷达组网的沙尘过程研究（封面文章）

杨丽丽 1,2, 周天 1, 杨晓军 3, 黄忠伟 1, 王莉娜 2*, 李晓云 4, 杨燕萍 2, 陶会杰 2

1 兰州大学大气科学学院, 半干旱气候变化教育部重点实验室, 甘肃兰州 730000; 2 甘肃省环境监测中心站, 甘肃兰州 730020; 3 兰州中心气象台, 甘肃兰州 730020; 4 无锡中科光电技术有限公司, 江苏无锡 214135

收稿日期:2023-07-10 修回日期:2023-09-11 出版日期:2025-11-28 发布日期:2025-11-24
通讯作者: E-mail: dq954@126.com E-mail:dq954@126.com
作者简介:杨丽丽 (1987- ), 女, 甘肃临洮人, 博士, 高级工程师, 主要从事环境空气质量方面的研究。E-mail: 949153307@QQ.com
基金资助:
国家自然科学基金 (42075126), 第三批陇原青年英才项目, 甘肃省科技计划项目 (23JRRA1032), 甘肃省自然科学基金项目 (22JR5RA744, 23JRRA1325, 21JR7RA501)

Study on a sand and dust process based on lidar network

YANG Lili 1, 2, ZHOU Tian 1, YANG Xiaojun 3, HUANG Zhongwei 1, WANG Lina 2*, LI Xiaoyun 4, YANG Yanping 2, TAO Huijie 2

1 College of Atmospheric Sciences, Lanzhou University, Key Laboratory of Semi-Arid Climate Change of the Ministry of Education, Lanzhou 730000, China; 2 Gansu Province Environmental Monitoring Center, Lanzhou 730020, China; 3 Center of Lanzhou Meteorological Observatory, Lanzhou 730020, China; 4 Wuxi CAS Photonics Co., Ltd, Wuxi 214135, China

Received:2023-07-10 Revised:2023-09-11 Online:2025-11-28 Published:2025-11-24

摘要/Abstract

摘要： 目前沙尘垂直结构的监测主要源于地面监测站点。本文基于甘肃省的6 台激光雷达组网数据，针对2021 年5 月30―31 日的一次沙尘过程，探究了该次沙尘过程中高空沙尘的分布特征，揭示了该次沙尘过程的沙尘来源、传输和发展趋势。首先对沙尘粒子进行了定性分析，阐述了沙尘传输过程中颗粒物的时空演变特征，并结合HYSPLIT (Hybrid single-particle Lagrangian integrated trajectory) 后向轨迹模型探讨了沙尘来源；其次，通过消光系数定量估算了高空的颗粒物浓度。得到以下结论： (1) 定性分析发现金昌和武威在强沙尘时段沙尘发展高度接近2.5 km，消光系数超过1 km-1，退偏振比升至0.26，沙尘粒子不规则程度较高，且具有明显的外来传输特征；随着沙尘向东传输时，沙尘影响高度不断降低，沙尘强度减弱，但沙尘粒子不规则度并未呈现明显的减弱趋势。(2) HYSPLIT 后向轨迹分析表明，此次沙尘主要来源于巴丹吉林沙漠和腾格里沙漠，并沿西北向东南方向传输。(3) 通过定量分析发现200 m高度处的 532 nm消光系数与地面观测的PM10质量浓度具有较高的线性相关性， R2达到0. 814，对比发现各雷达站点近地面PM10 质量浓度的拟合值接近于观测值。

关键词: 激光雷达组网, 沙尘, 消光系数, 颗粒物质量浓度, 拟合

Abstract: At present, the monitoring of the vertical structure of sand and dust mainly comes from ground monitoring stations. Based on the data from a lidar network consisting of 6 stations in Gansu Province, China, this paper explored the distribution characteristics of high-altitude sand and dust during a sand and dust process on May 30–31, 2021, and revealed the sources, transmission, and development trends of sand and dust for the process. Firstly, a qualitative analysis was conducted on the sand and dust particles, revealing the temporal and spatial evolution characteristics of particulate matter during the transportation, and the sources of sand and dust were explored using hybrid single-particle Lagrangian integrated trajectory (HYSPLIT) model. Secondly, the concentration of high-altitude particulate matter was estimated quantitatively based on extinction coefficient. The following conclusions were drawn: (1) Qualitative analysis found that during the period of strong dust in Jinchang and Wuwei, the development height of dust was close to 2.5 km, the extinction coefficient exceeded 1 km-1, the depolarization ratio increased to 0.26, and at the same time, the irregularity of dust particles was high and the particles had obvious external transmission characteristics. While the sand and dust transported eastward, the impact height of the sand and dust continuously decreased, and the intensity of the sand and dust weakened. However, the irregularity of the sand and dust particles did not show a significant weakening trend. (2) HYSPLIT backward trajectory showed that the dust mainly came from Badain Jaran Desert and Tengger Desert, and was transported from northwest to southeast. (3) Quantitative analysis found that the 532 nm extinction coefficient at the height of 200 m had a high linear correlation with the observed PM10 mass concentration on the ground, with an R2 of 0.814, and the fitting values of PM10 mass concentration near the ground at each lidar station were close to the corresponding observed values.

Key words: lidar network, sand dust, extinction coefficient, particulate mass concentration, fitting

中图分类号:

X513

杨丽丽, 周天, 杨晓军, 黄忠伟, 王莉娜, 李晓云, 杨燕萍, 陶会杰 . 基于激光雷达组网的沙尘过程研究（封面文章）[J]. 大气与环境光学学报, 2025, 20(6): 752-765.

YANG Lili , , ZHOU Tian , YANG Xiaojun , HUANG Zhongwei , WANG Lina , LI Xiaoyun , YANG Yanping , TAO Huijie . Study on a sand and dust process based on lidar network[J]. Journal of Atmospheric and Environmental Optics, 2025, 20(6): 752-765.

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基于激光雷达组网的沙尘过程研究（封面文章）

Study on a sand and dust process based on lidar network

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