Observational results of the sea breeze with a weak wind region over the northern Osaka urban area

Abstract

An analysis was performed of the observed sea breeze circulation penetrating from Osaka Bay to the inland Kyoto basin. A weak wind region (wind speeds of 2 m s-1 or less) of greater than 1000 m in depth, was found just ahead of the inland moving sea breeze front. The formation of the weak wind region was discussed from the view point of the interaction between the sea breeze and heat island circulations. Similar weak wind regions have also been reported to exist in association with the sea breezes observed over the northern periphery of the Tokyo urban area. ©2001, Meteorological Society of Japan.