aliasfox/srtm30m
SRTM 30m Global Digital Elevation Model NASA Shuttle Radar Topography Mission (SRTM) 30m resolution global DEM, converted to Cloud Optimized GeoTIFF format. Dataset Details Source: NASA SRTM GL1 v3 (Global 1 arc-second, ~30m resolution) Coverage: 80% of land surface between 56°S and 60°N Resolution: ~30 meters (1 arc-second) Format: GeoTIFF with Deflate compression, 16-bit signed integer Files: 14,296 tiles, ~65 GB total Tile naming: N{lat}E{lon}.tif or… See the full description on the dataset page: https://huggingface.co/datasets/aliasfox/srtm30m.
0206
1---2license: other3task_categories:4 - other5tags:6 - elevation7 - srtm8 - geotiff9 - dem10 - terrain11size_categories:12 - extra-extra-large-1M+13---14 15# SRTM 30m Global Digital Elevation Model16 17NASA Shuttle Radar Topography Mission (SRTM) 30m resolution global DEM, converted to Cloud Optimized GeoTIFF format.18 19## Dataset Details20 21- **Source:** NASA SRTM GL1 v3 (Global 1 arc-second, ~30m resolution)22- **Coverage:** 80% of land surface between 56°S and 60°N23- **Resolution:** ~30 meters (1 arc-second)24- **Format:** GeoTIFF with Deflate compression, 16-bit signed integer25- **Files:** 14,296 tiles, ~65 GB total26- **Tile naming:** `N{lat}E{lon}.tif` or `S{lat}W{lon}.tif` (1°×1° tiles)27- **Internal tiling:** 256×256 pixels, 15×15 grid per file (225 internal tiles)28- **NoData value:** -3276829- **Horizontal datum:** WGS 8430 31## Usage32 33### Via OpenZenith API34 35```36GET https://openzenith.pages.dev/api/elevation?lat=28.5&lon=96.537```38 39### Direct download40 41```python42from huggingface_hub import hf_hub_download43path = hf_hub_download("aliasfox/srtm30m", "N28E096.tif", repo_type="dataset")44```45 46### HTTP Range requests47 48Each GeoTIFF file supports HTTP Range requests. The first ~4KB contains the IFD (Image File Directory) with tile offsets. Each 256×256 internal tile can be fetched individually (~3-53 KB compressed).49 50## File Structure51 52Each file covers a 1°×1° area:53- Image size: 3601×3601 pixels54- Pixel values: elevation in meters (Int16)55- Compression: Deflate (zlib)56- Internal tiles: 256×256 (225 tiles per file)57