Does anyone know of sources for downloadable global composite NDVI datasets (2-week to 1 month composites) that include more recent data than 2006? The GLCF (http://glcf.umiacs.umd.edu/data/gimms/) and USGS (http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/NDVI) composite AVHRR data is available through 2006, but in a cruel twist of fate, I need data for 2007. My area of interest is NW Siberia, so I don't necessarily need global coverage if anyone is aware of more geographically specific data. Thanks in advance.
The MODIS sensors aboard Terra and Aqua have vegetation indices data, including NDVI and EVI. The MODIS Products Table shows all the available data. For both Terra and Aqua, they have 16 day data at 250, 500, 1000, and 5600 meters and monthly data at 1000 and 5600 meters.
The easiest way to get MODIS data downloaded and projected into a useful coordinate system (the default is sinusoidal) is through the MRTWeb Tool. Here's a screenshot of it in action:
I've spent a lot of time using MODIS vegetation indices data and using the MRTWeb tool, so feel free to ask any followup questions.