Properties of Solar Radiation Components Reflected by the Sea Surface: - A Case of Jeju Island, South Korea -
 Title & Authors
Properties of Solar Radiation Components Reflected by the Sea Surface: - A Case of Jeju Island, South Korea -
Fumichika, Uno; Hayashi, Yousay; Hwang, Soo-Jin; Kim, Hae-Dong;
 
 Abstract
Solar radiation components reflected by the sea surface () are additional energy sources comprising the solar radiation regime. Previous studies, based on observational approaches, indicated that is an available climatological resource. However, an estimation process for has not been established. In this case study over Jeju Island in South Korea, we applied a new estimation process to solar radiation modeling and discussed the spatial distribution of and its seasonal variation. Our results showed that the illuminated area and the intensity of became greatest at the winter solstice and least at the summer solstice. We estimated the illuminated area of as it expanded over the southern slope of Jeju Island. At the winter solstice, on a daily basis, the area and intensity of illumination by were and , respectively. Comparing the daily accumulative and instantaneous values of intensity, the difference was about 20 times greater in daily cases than in instantaneous cases. On the other hand, for instantaneous values, the intensity accounted for up to 33% of the three components, i.e., direct, diffuse and reflected radiation in winter solstice. In addition, it was estimated that the sea surface reflectance depended on the wind speed. Therefore, in a practical use of this revised model, wind conditions should be considered as a critical factor in estimating .
 Keywords
Solar radiation;Reflection by the sea;Topographic shading;Jeju Island;
 Language
English
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