Maintenance work on the ZORA database servers is scheduled for Thursday 25th July 2019 from 19:00-20:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
White, M A; de Beurs, K M; Didan, K; Inouye, D W; Richardson, A D; Jensen, O P; O'Keefe, J; Zhang, G; Nemani, R R; van Leeuwen, W J D; Brown, J F; de Wit, A; Schaepman, Michael E; Lin, X; Dettinger, M; Bailey, A S; Kimball, J; Schwartz, M D; Baldocchi, D D; Lee, J T; Lauenroth, W K (2009). Intercomparison, interpretation, and assessment of spring phenology in North America estimated from remote sensing for 1982-2006. Global Change Biology, 15(10):2335-2359.