Latitudinal gradient of spruce forest understory and tundra phenology in Alaska as observed from satellite and ground-based data

Hideki Kobayashi^*, Ali P. Yunus, Shin Nagai, Konosuke Sugiura, Yongwon Kim, Brie Van Dam, Hirohiko Nagano, Donatella Zona, Yoshinobu Harazono, M. Syndonia Bret-Harte, Kazuhito Ichii, Hiroki Ikawa, Hiroki Iwata, Walter C. Oechel, Masahito Ueyama, Rikie Suzuki