Abstract：The article uses a millimeterwave cloud radar to conduct continuous observations and analysis of a typical cloudfog event in a mountainous area.Combined with surface meteorological elements and sounding data,it depicts the complete evolution of the cloudfog system from formation to dissipation.Observations show that the event lasted 18 h,with the cloudbase height rising from the surface to 450 m,while radar reflectivity fluctuated between -25 dBZ and 10 dBZ.The vertical structure exhibited clear stratification,and echo intensity showed a significant positive correlation with liquid water content.The coupled effects of thermodynamic and dynamic conditions were the key drivers of the evolution:nearsurface radiative cooling favored fog formation,whereas terraininduced lifting and boundarylayer mixing dominated cloud development.
2026, Vol. 43 
