We extended the MODIS TERRA and MODIS AQUA Normalized Differential Vegetation Index (NDVI) data sets. These are now available with monthly temporal and 0.05 degree grid resolution for February 2000 through April 2019 (TERRA) and for July 2002 through April 2019 (AQUA):
http://icdc.cen.uni-hamburg.de/daten/land/modis-vegetationindex.html