Mechanisms of temporary improvement and rapid changes in visibility in fogs

摘要: Environmental situations associated with temporary improvement or rapid changes in visibility the presence of fog were analyzed to understand mechanisms these at Rokkasho Village, Aomori Prefecture, northeast Japan. This region is frequently affected by sea fogs. The profiles liquid water content and drop size distribution fogs obtained a direct photographic method using tethered hot-air balloon. On basis results, on July 10, 2006 was attributed convection-driven downward transport air parcels lower total than near ground surface. same location 24 seemed be related mixing Kelvin-Helmholtz waves. Mixing an upper layer containing less initially caused but subsequently, it led formation dense just above surface area upward flow. Settlement drops from degraded this area.