Climatic Division of Kantô District, Japan

Using the data observed at about 400 stations in Kantô District (32, 000km2) and its surrounding area, an attempt on the climatic division was made from the meso-climatological standpoint. Paying attention to (1) the tendency (running direction and position) of certain significant isolines and (2) the density of isolines, which means gradient, the division was tried. The division maps were superimposed in order in a following way:Finally, the maps shown in Eigs. 1-3 were superimposed at the last step into a map as giving a climatic division (Fig. 4). The regions under consideration were divided into five major areas and 29 subareas. Short explanation of climate in the subareas was given in the text.