Locations of the main frontal zones in the Würm Glacial Age are reconstructed as in Fig. 1. Abbreviations in the figure are as follows: A; Arctic or Antarctic Front, P; Polar Front, NI; Northern Intertropical Convergence Zone, SI; Southern Intertropical Convergence Zone, s; northern summer location and w; northern winter location. An English version of this article with a slight difference in explanation has already appeared in the Bulletin of the Department of Geography University of Tokyo No. 3, 1971, under the title of “Climatic Zones of the Würm Glacial Age.”
