Analysis of Heat Island in Tokyo Metropolitan Area by Using METROS Data

Abstract

In this paper, we observed wind-dependent movement of heat island in summer in Tokyo metropolitan area, by analyzing METROS, wind direction and velocity data of AMeDAS. The result showed that the heat island around the center of the Tokyo and east of Saitama were led into the leeward direction. At the daytime of a southern wind day, Sagami plain becomes cool island, and area from Tokyo to Kumagaya becomes strong heat island. On the other hand, in north wind day, heat island can be seen at the coastal area. These heat island movements quickly responded to the rapid change of wind direction.