5.B.i.h. DTED Poleward of 50o North and South Latitudes
Besides areas noted above, DEMs poleward of 50o North and South latitude were available from NIMA, via NIMA/DTED Level 0 and USGS/GTOPO30. DTED Level 0 was decimated at consistent 1/10 ratio from the original spatial resolution of DTED
Level 1. (See the table in Section 5.A.i.a for specifics.) Data used in GTOPO30 were resampled to a consistent 30" by 30" grid spacing. Thus the latter carry greater resolution poleward of 50o and were
selected for GLOBE Version 1.0.