Yasunori Tohjima, NIES National Institute of Environmental Studies, Ibaraki, Japan, Hitoshi Mukai, National Institute of Environmental Studies, Tsukuba, Ibaraki, Japan, Toshinobu Machida, Natl Inst Environal Studies, Tsukuba, Japan, Shin-ichiro Nakaoka, CGER/NIES, Tsukuba, Japan, Ishizawa Misa, Misa.Ishizawa@Canada.Ca, QC, Canada and Tomoko Shirai, NIES, Tsukuba, Japan