The full data set can be downloaded from the links above. For more information about the GDEM, see the Validation Report:īelow are browse images derived from ASTER GDEM globe map data sets. This ASTER product is available at no charge for any user pursuant to an agreement between METI and NASA.
how to prepare DEM data downloaded from the USGS Web site using a free utility. The GDEM and ASTWBD are available for download from NASA Earthdata and Japan Space Systems. This project uses a DEM file downloaded from a source that provides. Each GDEM tile has a corresponding Water Body tile. This raster product identifies all water bodies as either ocean, river, or lake.
Additionally, 30 meter DEMs can be downloaded from the. Generate Boundary, Grid Elevation, Grid Annotation, Contours, Contour Annotation in a single step. Lightweight contours thereby reducing the drawing file size. The elevation values can be obtained by advanced spaceborn techniques such as the use of remote sensing from satellites. Non-restricted access to this data in SDTS format (free) and other formats is available at . Benefits: No additional steps of creating terrain for contour generation. The terrain properties of a study area are of great importance due to the vast information they provide for water and land management. The data are provided "as is,"Īnd neither NASA nor METI/Japan Space Systems (J-spacesystems) will be responsible for any damages resulting from use of the data.Īn additional global product is now available: the ASTER Water Body Dataset (ASTWBD). Downloading a Digital Elevation Model (DEM) from NASA EarthData Tutorial. However, users are advised that the data contains anomalies and artifacts that will impede effectiveness for use in certain applications. Version 3 shows significant improvements over the previous release. The ASTER GDEM V3 maintains the GeoTIFF format and the same gridding and tile structure as V1 and V2, with 30-meter postings and 1 x 1 degree tiles. The refined production algorithm provides improved spatial resolution, increased horizontal and vertical accuracy. The improved GDEM V3 adds additional stereo-pairs, improving coverage and reducing the occurrence of artifacts. ASTER GDEM coverage spans from 83 degrees north latitude to 83 degrees south, encompassing 99 The first version of the ASTER GDEM, released in June 2009, was generated using stereo-pair images collected by the ASTER instrument onboard Terra.
Global Digital Elevation Model Version 3 (GDEM 003), and the ASTER Water Body Dataset (ASTWBD) on August 5, 2019. The Ministry of Economy, Trade, and Industry (METI) of Japan and the United States National Aeronautics and Space Administration (NASA) jointly announced the release of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Data were converted to feet for deliverables to match the rest of the data products.ASTER Global Digital Elevation Map Announcement Horizontal: State Plane, International Feet, HARN, Datum NAD83Ĭounties flown in 2008 were acquired with vertical units in meters.LiDAR-derived elevation products are provided in the following coordinate system: Some elevation products unavailable.Ĭlick a county name to expand the table to show available LiDAR-derived elevation products are available for each flight. Not acquired within regular SCDNR procedures. Parts of county flown over two projects in 20.