_:genid1 . _:genid1 "NSIDC-0223" . _:genid2 . _:genid2 . _:genid2 "72"^^ . _:genid2 "61"^^ . _:genid2 "-30"^^ . _:genid2 "-52"^^ . _:genid3 . _:genid3 . _:genid3 "1978-01-01T00:00:00"^^ . _:genid3 "1988-12-31T00:00:00"^^ . "nasa-nsidcdaac-0223" . "Elevation Change of the Southern Greenland Ice Sheet from 1978-88"^^ . "10.5067/10JHXYLCEFVX" . _:genid1 . . "Southern Greenland ice sheet elevation change estimates are derived from SEASAT and GEOSAT radar altimetry data from 1978 to 1988. Data are confined to 61-72 deg N, 30-50 deg W, above 1700 m elevation. The addition of GEOSAT Geodetic Mission (GM) data results in twice as many crossover points and 50% greater coverage than previous studies. Coverage above 2000 m elevation is improved to 90%, and about 75% of the area between 1700 m and 2000 m is now covered. Data are in ASCII text format, available via FTP, and consist of elevation change rate (dH/dt, cm/year) and corresponding error estimates in 50 km grid cells."^^ . "2001-01-01T00:00:00"^^ . _:genid2 . _:genid3 . . _:genid4 . _:genid4 . _:genid4 . _:genid4 . "oai:nsidc/NSIDC-0223" . "http://nsidc.org/api/dataset/2/oai?verb=GetRecord&metadataPrefix=dif&identifier=oai:nsidc/NSIDC-0223" . .