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In situ measurement of incoming solar radiation by voluntary ships in the western Pacific |
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| Authors: | Naoto Iwasaka Susumu Kuwashima Hirotaka Otobe Kimio Hanawa Hideki Hagiwara Ruri Suzuki |
| Institution: | (1) Tokyo University of Mercantile Marine, Etchujima, Koto-ku, 135 Tokyo, Japan;(2) Otsuchi Marine Research Center Ocean Research Institute, University of Tokyo, Akahama, 028-11 Otsuchi, Iwate, Japan;(3) Faculty of Science, Tohoku University, Aoba-ku, 980-77 Sendai, Japan |
| Abstract: | We have been performingin situ measurement of downward short wave radiation (solar radiation) in the western Pacific Ocean in cooperation with voluntary ships since autumn 1990 in order to obtain much more precise knowledge of downward short wave radiation at the sea's surface than before. Preliminary result of the observation from autumn 1990 through spring 1992 is shown in this paper. The comparison of observed daily mean downward short wave radiation with that estimated from observed cloudiness by using Reed (1977) formula is also presented to show the necessity ofin situ measurement in the study of the downward short wave radiation at the sea's surface. |
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