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Find environmental information by scientific noun. Choose a noun, inspect its returned object and source contract, then follow a real-data lesson. Browse by source, or look up an operation in Documents.
Climate & weather
| Noun | Meaning | Source flavors | Coverage / resolution / time |
|---|---|---|---|
| humidity | Daily maximum or minimum relative humidity. | gridmet | gridmet: Contiguous United States, 4,638.3 m, daily (1979-present) |
| precipitation | Daily precipitation totals. | gridmet, prism | gridmet: Contiguous United States, 4,638.3 m, daily total (1979-present); prism: Contiguous United States, approximately 4 km, daily total (1981-present) |
| radiation | Downward surface shortwave radiation. | gridmet | gridmet: Contiguous United States, 4,638.3 m, daily (1979-present) |
| temperature | Gridded air temperature, with an explicit daily statistic. | gridmet, prism | gridmet: Contiguous United States, 4,638.3 m, daily (1979-present); prism: Contiguous United States, approximately 4 km, daily (1981-present) |
| vpd | Mean daily vapor-pressure deficit. | gridmet | gridmet: Contiguous United States, 4,638.3 m, daily mean (1979-present) |
| wind | Wind velocity at 10 m height. | gridmet | gridmet: Contiguous United States, 4,638.3 m, daily (1979-present) |
Surface observations
| Noun | Meaning | Source flavors | Coverage / resolution / time |
|---|---|---|---|
| surface_reflectance | Multispectral surface-reflectance bands. | sentinel2 | sentinel2: Global land surfaces, 10, 20, or 60 m by band; CubeDynamics default 10 m, scene acquisition; nominal five-day constellation revisit (2015-present) |
Vegetation
| Noun | Meaning | Source flavors | Coverage / resolution / time |
|---|---|---|---|
| vegetation_index | A derived vegetation index; currently NDVI. | sentinel2 | sentinel2: Global land surfaces, 10 m, scene acquisition; nominal five-day constellation revisit (2015-present) |
Terrain
| Noun | Meaning | Source flavors | Coverage / resolution / time |
|---|---|---|---|
| elevation | Surface elevation on a native raster grid. | usgs_3dep | CONUS; one fully covering native tile; 1/3 arc-second; native cells; Static tile version, not a time series |
Networks & infrastructure
| Noun | Meaning | Source flavors | Coverage / resolution / time |
|---|---|---|---|
| roads | Mapped road features with provider-native geometry, identifiers, and classes. | overture, osm | Release-covered areas; bounded small-area queries; Native vector segments; Explicit release, e.g. 2026-08-19.0; Small query areas through Overpass; Native OSM way geometry; Rolling snapshot at retrieval; timestamp retained |
Water & hydrology
| Noun | Meaning | Source flavors | Coverage / resolution / time |
|---|---|---|---|
| streamflow | Observed discharge at an identified streamgage through time. | usgs | One supported USGS station per request; Point station; native observation intervals; Provider-available observations; <=31-day requests |
Use and extend
Learn about source choice · Custom nouns · Source QA
Source-specific imports and tested limits are shown on each noun page. Inclusion in this library is not a claim that all sources share the same certification or serving history.