中国海洋大学学报（自然科学版）2026，Vol.56Issue(7)：23-34,12.DOI:10.16441/j.cnki.hdxb.20250217
利用毫米波和激光雷达资料对2024年4月黄海西部一次海雾过程的结构特征分析
Analyses of Structural Characteristics of a Sea Fog Event over the Western Yellow Sea in April,2024 by Using the Millimeter-Wave Radar and Lidar Data
摘要
Abstract
Using the millimeter-wave radar and lidar data,conventional meteorological observation da-ta,and ERA5 reanalysis data,the authers conducted observational analyses of a sea fog event that oc-curred over the western Yellow Sea in April,2024.A prolonged sea fog event lasting four days on April 12-15,2024 occurred in Qingdao and its adjacent coastal waters.It influenced by warm and moist air-flows behind the maritime high-pressure system.During the fog development stage,favorable air-sea temperature difference,stable air-sea interface,suitable conditions of inversion layer,weak wind shear within the atmospheric boundary layer,and high static stability collectively facilitated the development and maintenance of the sea fog.The lidar deployed at Huangdao National Basic Meteorological Station successfully captured the variation trend of atmospheric visibility throughout the fog's formation and dissipation processes.It also captured the onshore propagation of sea fog during its formation stage.However,significant detection attenuation was observed during the mature stage of sea fog event.The millimeter-wave radar revealed the vertical structural characteristics of this sea fog event at different de-velopmental stages.During the formation stage,see fog echo signals were detected below 0.5 km.Longwave radiative cooling at the fog top resulted in a significantly lower reflectivity factor at the fog top edge compared to the middle and lower layers,inhibiting the upward expansion of the fog top.Dur-ing the mature stage,fine and irregular bright-dark fluctuations emerged within the non-top and non-bottom regions of the fog layer.This phenomenon might have been closely associated with small-scale turbulent motions inside the fog.In the late stage,the coalescence and growth of fog droplets followed by sinking led to echo signals exhibiting a filamentous structure similar to the convective features of weak precipitation,with the echo height rising above 1.2 km.At this time,the conditions were no lon-ger conducive to the maintenance and development of the sea fog.The combined application of conven-tional and new observational equipment,leveraging their complementary advantages,may contribute to an in-depth understanding of the structural characteristics of sea fog over the Yellow Sea.关键词
毫米波雷达资料/激光雷达资料/黄海海雾/大气能见度Key words
millimeter-wave radar data/lidar data/sea fog over the Yellow Sea/atmospheric visibility分类
海洋科学引用本文复制引用
鄢珅,时晓曚,吴凤远,雷勇,王倩,高荣珍..利用毫米波和激光雷达资料对2024年4月黄海西部一次海雾过程的结构特征分析[J].中国海洋大学学报（自然科学版）,2026,56(7):23-34,12.基金项目
山东省自然科学基金项目(ZR2024LQX004) （ZR2024LQX004）
中国气象局创新发展专项项目(CXFZ2025Q001) （CXFZ2025Q001）
环渤海区域海洋气象科技协同创新项目(QYXM202412)项目 （QYXM202412）
青岛市气象局科研项目(2025qdqxq04,2026qdqxzl-04)资助 Supported by Shandong Provincial Natural Science Foundation(ZR2024LQX004) （2025qdqxq04,2026qdqxzl-04）
China Meteorological Administration Innovation and Development Special Project(CXFZ2025Q001) （CXFZ2025Q001）
Bohai Sea Rim Collaborative Innovation Project of Marine Meteorological Tech-nology(QYXM202412) （QYXM202412）
Qingdao Meteorological Bureau Research Project(2025qdqxq04,2026qdqxzl-04) （2025qdqxq04,2026qdqxzl-04）
