_:genid1 . _:genid1 "BLATM1B" . _:genid2 . _:genid2 . _:genid2 "90"^^ . _:genid2 "60"^^ . _:genid2 "180"^^ . _:genid2 "-180"^^ . _:genid3 . _:genid3 . _:genid3 "1993-06-23T00:00:00"^^ . _:genid3 "2008-10-30T00:00:00"^^ . "nasa-nsidcdaac-blatm1b" . "Pre-IceBridge ATM L1B Qfit Elevation and Return Strength"^^ . "10.5067/8Q93SAT2LG3Q" . _:genid1 . . "The NASA Pre-IceBridge ATM Level-1B Qfit Elevation and Return Strength (BLATM1B) data set contains spot elevation measurements of Arctic, Greenland, and Antarctic sea ice and ice surface acquired using the NASA Airborne Topographic Mapper (ATM) instrumentation. The data are stored in qfit binary format and are available via FTP for periodic campaigns from 23 June 1993 to 30 October 2008."^^ . "2012-09-27T00:00:00"^^ . _:genid2 . _:genid3 . . _:genid4 . _:genid4 . _:genid4 . _:genid4 . "oai:nsidc/BLATM1B" . "http://nsidc.org/api/dataset/2/oai?verb=GetRecord&metadataPrefix=dif&identifier=oai:nsidc/BLATM1B" . .