宇治川気象観測塔で観測された冬期の冷えこみと霧について

Abstract

Special meteorological observations including the measurements of momentum flux, sensibleheat flux and water vapour flux were carried out, during calm cloudless night, for the study ofthermodynamic behavior of the boundary layer in the case of nocturnal temperature lowing atUjigawa meteorological tower (40 m height) from March 3 to March 4, 1979. Meteorologicalsituations in the lower layer when the temperature cooling occurred in the sorthen part of KyotoBasin were analyzed. Observations were carried out when the radiation fog occurred in thewinter. Themodynamical processes on the formation of radiation fog including the boundaryconditions for the heat flux at the earth surface and the top of fog, and the boundary conditions forthe water vapour flux at the earth surface were discussed on the basis of the observational results.