Distribution of allochthonous humic-like fluorescent dissolved organic matter in the western North Pacific Ocean

Youhei Yamashita, Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan, Jun Nishioka, Hokkaido University, Institute of low temperature science, Sapporo, Japan, Hajime Obata, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan and Hiroshi Ogawa, The University of Tokyo, Atmosphere and Ocean Research Institute, Kashihwa, Chiba, Japan