海洋气象学报2026，Vol.46Issue(4)：79-90,12.DOI:10.19513/j.cnki.hyqxxb.20250306001
2024年春季黄渤海一次持续性海雾不同阶段成因分析
Analysis on formation mechanisms of a persistent sea fog event at different phases over the Yellow and Bohai Seas in spring 2024
摘要
Abstract
This study investigates the formation mechanisms of a persistent sea fog event at different phases over the Yellow and Bohai Seas from 12 to 15 April 2024,utilizing ERA5 data and multi-source observations,alongside the HYSPLIT model.The results are as follows.(1)The sea fog event can be divided into two distinct phases with significant differences in formation mechanisms and physical parameters:the advection fog phase behind high pressure(the early morning on 12-the daytime of 14 April)and the frontal fog phase behind cyclone(the nighttime of 14-the daytime of 15 April).(2)During the advection fog phase,the persistent warm and moist southerly flow reaches saturation through combined cooling and moistening effects over the cold sea surface,and together with a strong temperature inversion,the widespread and long-lasting sea fog is produced.Over the Yellow sea,the dense fog with visibility below 200 m persists for 38 h,with a minimum visibility of 85 m,while the fog over parts of the Bohai Sea exhibits pronounced diurnal variations with visibility above 200 m.(3)During the frontal fog phase,the warm and moist air provides high-humidity background,and as the cyclone moves eastward,the cold air mass at the lower level penetrates and moves southward.This cooling effect causes the saturation of near-surface air,and under a stable double inversion layer,the sea fog forms over the Bohai Sea and the northern Yellow Sea behind the cyclone.During this phase,the dense fog lasts only 7 h,with a minimum visibility of 71 m.(4)Throughout the entire process,the air-sea temperature difference maintains at 0-3℃,and the areas with 1 000-hPa relative humidity greater than 95％correspond well with the fog areas,which can serve as an important reference for sea fog forecasting.关键词
海雾/逆温/气旋后部/气海温差Key words
sea fog/temperature inversion/behind cyclone/air-sea temperature difference分类
海洋科学引用本文复制引用
纪旭鹏,丛春华,史茜,张可..2024年春季黄渤海一次持续性海雾不同阶段成因分析[J].海洋气象学报,2026,46(4):79-90,12.基金项目
中国气象局复盘总结专项(FPZJ2025-071) （FPZJ2025-071）
山东省气象局重点项目(2025sdqxz11) （2025sdqxz11）
山东省气象局创新团队专项(2024sdcxtd02) （2024sdcxtd02）
