Observation Analysis of Two Sea Fog Processes Based on Millimeter Wave Radar
Wang Zhicheng
Zhang Xuefen
Hu Shuzhen
Ma Shangchang
Lei Yong
Jiao Zhimin
Abstract：The characteristics of two sea fog processes in Pingtan,Fujian Province,are analyzed based on the observation data of Ka-band millimeter-wave radar and automatic weather stations.The re-sults show that the millimeter-wave radar can observe the horizontal distribution and vertical structure characteristics of sea fog,and realize the effective monitoring of the whole life of sea fog's generation,development and dissipation.In terms of the two fog processes,in the stage of sea fog generation,PPI scanning echoes were uniform and the reflectivity factor was minimum in whole process,while in the stage of sea fog development,RHI scanning echoes showed up a wisp-like structure from high altitude to sea surface and the reflectivity factor reached the maximum in whole process.During the two fog processes,the average fog top height varied in the range of 200-300 m,and the maximum fog top height appeared at the boundary between sea and land which was near the radar installation point.The fog-top height gradu-ally descended as fog extended toward the ocean.
Keywords：millimeter-wave radarvisibilitysea fogfog top height
Publication Date：2025-03-30
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 10-17 )