AGL
June 30th 09, 03:09 PM
Japan’s Ministry of Economy, Trade and industry (METI) and NASA
announced the release of the ASTER Global Digital Elevation Model
(GDEM) on June 29, 2009. The GDEM was created by stereo-correlating
the 1.3 million scene ASTER VNIR archive, covering the Earth’s land
surface between 83N and 83S latitudes. The GDEM is produced with 30
meter postings, and is formatted in 1 x 1 degree tiles as GeoTIFF
files. Each GDEM file is accompanied by a Quality Assessment file,
either giving the number of ASTER scenes used to calculate a pixel’s
value, or indicating the source of external DEM data used to fill the
ASTER voids.
Might be the next step in terrain maps for soaring.
Martin
announced the release of the ASTER Global Digital Elevation Model
(GDEM) on June 29, 2009. The GDEM was created by stereo-correlating
the 1.3 million scene ASTER VNIR archive, covering the Earth’s land
surface between 83N and 83S latitudes. The GDEM is produced with 30
meter postings, and is formatted in 1 x 1 degree tiles as GeoTIFF
files. Each GDEM file is accompanied by a Quality Assessment file,
either giving the number of ASTER scenes used to calculate a pixel’s
value, or indicating the source of external DEM data used to fill the
ASTER voids.
Might be the next step in terrain maps for soaring.
Martin