Extended Abstract

The characteristic change and analysis of its cause ofrecent precipitation in DPR of KoreaKIM thaejin, SONG Chol ManCentral meteorological research institute , DPR of Koreashma@co.chesin.com.In this paper, th e statist ical r esearch an d a nalysis on the characteristic ch anges ofprecipitation appeared since the early part of the 21st century in DPRK, and on clarifying itscause was described at various aspects.Available data and methodology are as follows;Observation data of precipitation amount (since 1918yr) at main meteorological stationsand climatological stations,The northern hemisphere 500hPa height (NCEP reanalysis data)The Global and the East Asian regional climate research results presented recently,Correlation analysis methodLinear and multi-regression analysisComposite method of chartsThe inter-decadal an d inter -annual cha nge of precipitation amo unt a nd sp ecially theregional precipitation distribution in July, August was a nalyzed by mea n and v ariationcoefficient and the recent change of summer seasonal Changma was also analyzed.In o rder to clarify the cause of cha nges i n pr ecipitation, the atmosp here circulati onbackground field s and the natural fa ctors (so lar activity, ice and snow c over, v olcanicactivity) and the hum an factors ( chan ge of greenhouse gas Co2 concentration, deforest,desertification) and the factor analysis to climate change were used.The c onclusion o btained in th is p aper is th at the a nnual m ean pr ecipitation am ount,especially su mmer season precipitation h ad the d ecreasing trend sinc e 1 960 ’s and theincreasing trend in Autumn season precipitation after 2000yr and the intensity of rainstormwas strengthen remarkably compared with previous time.The study showed that the strengthening of zonal circulation in East Asia compared withthe mid-20st century and the relative weakening of East Asia monsoon from it and the rapidincrease o f t he co2 concentr ation in the air was cl osely related to t he r ecent cha nge atprecipitation.-412-