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Tracking dryland vegetation phenology under a changing climate is of great concern because dryland ecosystems have broad spatial coverage and are important drivers of global carbon cycles. However, dryland ecosystems often consist of two or more different vegetation types with divergent phenological patterns and are characterized by relatively low...
Satellite vegetation indices (VIs) serve as an important means to monitor and characterize seasonal changes of terrestrial vegetation. It is, therefore, critical to ensure quality of such VI products. One method of assessing VI product quality is cross-comparison with in situ flux tower measurements. Two methods of deriving the normalized differenc...
 The Suomi National Polar-orbiting Partnership (S-NPP) satellite with Visible/Infrared Imager/Radiometer Suite (VIIRS) onboard was launched in October 2011. VIIRS is the primary instrument for a suite of Environmental Data Records (EDR), including Vegetation Index (VI) EDR, for weather forecasting and climate research. The VIIRS VI EDR operation...