Abstract
In Higashimatsuura Peninsula basin, abrupt temperature rise often affects the occurrence time of the lowest temperature in the night. In this study, the local meteorological observations were conducted in the peninsula basin to find the process of the temperature rise at night. In the observations, vertical temperature profiles were measured by using tetherd meteorological balloons, temperature distributions along the south slope by fixed small thermometers at the meteorological stations, and thermo images by an infrared thermgraphy. The observed results showed that nocurnal temperature rise was casused by advective heat transfer due to warm air flow affected by sea climate. When wind with velocity of less than 1 m s-1 temporarily blew in the upland and atmosphere was calm in the basin, the temperature only around the height of more than 30 m from the sea level was raised. However, while the continuously blowing wind of more than lm s-1 wasmaintained in the upland, we also observed that warm wind from southwest blows down over the south slope of the basin and causes the temperatrue rise in the basin in both vertical and horizontal directions. In addition, the thermographic image analysis clearly demonstrated that warm wind topographically invaded to the basin.
