A Detailed Analysis of the Land and Sea Breeze in the Sagami Bay Area in Summer

[摘要] The structure of the land and sea breeze and its diurnal variation were studied by using the data of special field observation performed in the Sagami Bay area in summer of 1980 and 1981. A dynamical analysis was made in order to examine the balances of heat and momentum and the effect of the land slope on the land and sea breeze. It is found that the sea breeze is driven mainly by the land-sea surface temperature difference and has many features of a typical sea breeze. The sea breeze in the developing stage forms a small-scale vertical circulation centered over the coast line, while that in the mature stage forms a part of the "regional-scale sea breeze" which covers the whole Kanto plain. On the other hand, the land breeze is largely affected by the land slope, because the reduced vertical heat transport in the nocturnal atmosphere suppresses the land-sea breeze effect.

[学科分类] 大气科学