Case Studies of Spring and Summer Sea Stratus at Kunsan Air Base, Korea.

摘要

Spring and summer sea stratus is a major forecasting problem at Kunsan AB. Stratus moves in rapidly from the sea quite often without warning and causes below VFR conditions at Kunsan lasting from a few hours to several days, at times bringing ceilings as low as 100 feet. Case studies of 1964 spring and summer stratus occurrences were made and from these, ideal synoptic situations for occurrences were determined. Formation of sea stratus seems to be well correlated with frontal passages. However, approaches and passages of fronts merely trigger sea stratus formation. Principal causes are the existence of strong cold or war air advection near the frontal boundaries. This can result in ceiling and visibility as low as WOX 1/16 due to advection of sea stratus or fog from offshore inlands over the station with the mixing of cold and warm air occurring over the Yellow Sea. (Author)