A Study on the Analysis of Global Dimming Appearances Using the Solar Radiation Measurement in Korean Major Cities (Focused on Atmospheric Clearness Analysis)

태양광에너지 측정을 통한 우리나라 주요 도시의 Global Dimming 현상 분석에 관한 연구 (대기의 청명도 분석을 중심으로)

Since the atmospheric clearness index is main factor for evaluating global-dimming of atmosphere environment, it is necessary to estimate its characteristics all over the major cities in Korea. We have begun collecting clearness index data since 1982 at 16 different cities and considerable effort has been made for constructing a standard value from measured data at each city. The new clearness data for global-dimming analysis will be extensively used by evaluating atmospheric environment as well as by solar PV application system designer or users. From the results, we can conclude that 1) Yearly mean 61.9% of the atmospheric clearness index was evaluated for clear day all over 2) A significant difference of atmospheric clearness index is observed between 1982-1989 and 1990-1997, 1998-2005 through 16 different cities in Korea.