Utility of leaf-colouring information published on web sites for evaluation of spatial-temporal variability of autumn leaf phenology in Japan

Shin Nagai, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Taku M Saitoh, Gifu University, Gifu, Japan and Rikie Suzuki, JAMSTEC Japan Agency for Marine-Earth Science and Technology, Department of Environmental Geochemical Cycle Research, Kanagawa, Japan