南京大学学报（自然科学版）2025，Vol.61Issue(3)：441-453,13.DOI:10.13232/j.cnki.jnju.2025.03.008
阵风锋与海风碰撞形成的大气波涌及其在对流触发中的作用
An atmospheric bore formed from the collision between gust front and sea breeze and its role in the convection initiation
摘要
Abstract
This study examines an atmospheric bore formed from the collision between a gust front(GF)and a sea breeze(SB)over the Bohai sea coast of China during the night of June 12-13,2018,and discusses the role of atmospheric bore on upstream convection initiation(CI).Based on radar data,ground-based observations,and high-resolution numerical simulations,the findings indicate that the SB establishes a stable boundary layer(SBL)offshore,while the GF associated with the eastward-moving mesoscale convective system(MCS)undergoes a transformation due to their interaction.Initially characterized as a density current,the GF gradually evolves into a non-undular bore exhibiting gravity wave properties and eventually to an undular one.The undular bore then propagates within favorable trapping layers associated with the SB,lifting air parcels with high convective available potential energy(CAPE)within the SBL.This process initiates convection upstream and further sustains the MCS.Due to the widespread occurrence of GFs and SBs over the eastern coastal regions of China during the warm season,their interactions provide the possibility for bore formation under various boundary layer conditions,thereby playing a crucial role in the occurrence and development of intense convection both at night and during the daytime.关键词
大气波涌/密度流碰撞/中尺度对流系统/对流触发/雷达资料应用/数值模拟Key words
atmospheric bore/density currents collision/mesoscale convective systems/convection initiation/radar data applications/numerical simulations分类
天文与地球科学引用本文复制引用
黄龙,张树时,徐昕,黄泓,徐芬..阵风锋与海风碰撞形成的大气波涌及其在对流触发中的作用[J].南京大学学报（自然科学版）,2025,61(3):441-453,13.基金项目
国家重点研发计划(2023YFC3007502),中国气象局高影响天气重点开放实验室开放课题,国家自然科学基金(42105007,42005009,42475009),中国气象科学研究院基础研究基金(2021Y016,2021Z003) （2023YFC3007502）
