{"slug": "aster-gdem-v3", "name": "ASTER GDEM v3", "tagline": "30 m global elevation from ASTER stereo imagery", "source": "NASA / METI", "category": {"slug": "dem", "name": "DEM", "icon": "mountain", "tone": "slate"}, "meta": ["30 m", "2000–2013", "Global"], "thumb": "/static/catalog/thumbs/aster-gdem-v3.ddc828c25a1a.jpg", "bbox": [-180.0, -83.0, 180.0, 83.0], "global": true, "access": "login", "url": "/datasets/aster-gdem-v3/", "subtitle": "ASTER Global Digital Elevation Model Version 3", "summary": "Built from more than 1.8 million ASTER stereo scenes, the GDEM reaches further north and south than SRTM (83° against 60°N and 56°S), which makes it the usual 30 m choice for high-latitude basins. Each tile comes with a NUM file giving the number of scenes behind every cell, useful for masking poorly constrained areas. The companion ASTER Water Bodies Database is listed under Observations.", "categories": [{"slug": "dem", "name": "DEM", "icon": "mountain", "tone": "slate"}], "sources": [{"slug": "meti", "name": "Ministry of Economy, Trade and Industry (Japan)", "label": "METI", "url": "https://www.meti.go.jp/english/", "page": "/sources/meti/"}, {"slug": "nasa", "name": "National Aeronautics and Space Administration", "label": "NASA", "url": "https://www.earthdata.nasa.gov/", "page": "/sources/nasa/"}], "facts": [["Source", "NASA / METI"], ["Resolution", "30 m (1 arc-second)"], ["Time span", "2000–2013"], ["Temporal", "Static (stereo pairs from 2000 to 2013)"], ["Access type", "Download with free login"], ["Formats", "GeoTIFF"], ["Coverage", "83°S – 83°N"]], "access_note": "Free NASA Earthdata login", "coverage": "83°S – 83°N", "license": {"name": "Free, no restrictions on reuse or redistribution", "url": "https://lpdaac.usgs.gov/data/data-citation-and-policies/"}, "citation": "NASA/METI/AIST/Japan Spacesystems and U.S./Japan ASTER Science Team (2019). ASTER Global Digital Elevation Model V003. NASA EOSDIS Land Processes DAAC. https://doi.org/10.5067/ASTER/ASTGTM.003", "doi": "10.5067/ASTER/ASTGTM.003", "landing_url": "https://lpdaac.usgs.gov/products/astgtmv003/", "provider_url": "https://search.earthdata.nasa.gov/search?q=ASTGTM", "methods": [{"type": "cmr", "label": "ASTGTM v003 tiles (elevation and scene count) from NASA Earthdata"}, {"type": "link", "label": "Area subsets through AppEEARS"}], "preview": {"type": "gibs", "layer": "ASTER_GDEM_Color_Shaded_Relief", "label": "ASTER GDEM colour shaded relief (NASA GIBS)"}, "thumb_credit": "ASTER GDEM colour shaded relief (NASA GIBS)", "selection": [-75.0, -20.0, -50.0, 5.0], "selection_text": "-75,-20,-50,5", "snippets": {"curl": "# Earthdata login in ~/.netrc:\n# machine urs.earthdata.nasa.gov login USER password PASS\ncurl -fsSL \"https://hydrological.org/api/v1/datasets/aster-gdem-v3/links.txt?bbox=-75,-20,-50,5\" \\\n  | xargs -n 1 curl -fLO --netrc -b ~/.urs_cookies -c ~/.urs_cookies", "python": "import earthaccess  # pip install earthaccess\n\nearthaccess.login()\nresults = earthaccess.search_data(short_name=\"ASTGTM\", version=\"003\",\n                                  bounding_box=(-75, -20, -50, 5))\nearthaccess.download(results, \"data\")", "javascript": "const res = await fetch(\"https://hydrological.org/api/v1/datasets/aster-gdem-v3/links?bbox=-75,-20,-50,5\");\nconst { groups } = await res.json();\nfor (const g of groups) g.links.forEach(l => console.log(l.url));"}, "api": {"links": "/api/v1/datasets/aster-gdem-v3/links?bbox=-75,-20,-50,5", "manifest": "/api/v1/datasets/aster-gdem-v3/manifest?bbox=-75,-20,-50,5"}}