- In the tradition of the Landsat GeoCover data products, a new mid-decadal global land survey is being created via partnership with USGS and NASA. The global data set, which will be made available via FTP in Fall 2008, will use 9500 Landsat 5 and 7 scenes collected between 2004 and 2007 as well as ASTER and EO-1 data where needed.