What are the different version numbers of MODIS data?
A version number represents a collection of data with processing refinements for algorithm, instrument and calibration stabilization. This ensures a continuous time series of data with consistent science quality. When a new version becomes available, a small portion of the previous version (see Question 10) remains available to users. To learn about the different versions of MODIS snow and sea ice products available from NSIDC, refer to our MODIS Product Versions page, or see the MODIS Land Science Team’s Validation Status site.