Estimation of Probable Effects of Grobal Warming on Water Resources in Japan Based on Long-term Meteorological Data Analysis

Abstract

To estimate probable effects of grobal warming on water resources in Japan, long-term monthly data of temperature, precipitation and depth of snow cover are collected and analysed. Characteristics of precipitation in the period from May to September in defferent regions are compared over the cold decate and the warm decade. The relation between tempreture and yearly maximum depth of snow cover in the snowy regions is also investigated. The results show that drought in summer might become severe and snowmelt water might decrease with grobal warming.