• Climate data of New et al. (2002) were combined with 17 years of monthly 8 km AVHRR NDVI data to produce a set of 500 global ecoregions having similar patterns of phenology, or GLOBAL PHENOREGIONS
• Gray areas do not have a predominant annual NDVI signal, i.e., deserts, rain forests
• Designed a global network for long-term phenological monitoring to detect climate change effects

White, Hoffman, Hargrove, Nemani (2005) A global framework for monitoring phenological responses to climate change. Geophysical Research Letters 32(4):L04705