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都市地域의 濕度變化 特性 : 서울과 광주를 중심으로 in Seoul and Kwangju
柳贊洙,崔盟淑 조선대학교 기초과학연구소 1996 自然科學硏究 Vol.19 No.1
This paper is a study on the characteristics of RH variation in the urban area (in Seoul and Kwnagju). air temperature, RH and precipitation are meteorological elements observed from January 1, 1991 through December 31, 1991. The research contents of this study are distribution of variance, regression equation, annual variation, seasonal variation, diurnal variation and Dry Index. The results are as follows : Correlation coefficient of air temperature and RH is -0.91, and regression equation is RH=115-0.31T. Variation of RH has one annual cycle, which shows low RH period (spring and autumn) two times a year. It is shown that RH of urban area is lower on an annual average mean 2∼5.5% than that of surrounding area. Distribution of seasonal RH is in the order of winter>summer>spring>autumn. The order of seasonal RH difference between urban and surrounding area is autumn>spring>summer>winter. The paper shows that during one day RH at night is higher than that in daytime, and the order of RH difference between day and night is spring>autumn>summer (winter)>winter(summer). It is observed that during one day the highest RH occurs at sunrise time and the lowest, at 3 p.m. The distribution of Dry Index and RH are nearly similar.