Data and credits
Every figure on this site traces to one of these sources. Full details, access dates and caveats are in SOURCES.md.
Sources
| Used for | Source | Licence |
|---|---|---|
| Area boundary and roads | OpenStreetMap, via the Overpass API | ODbL 1.0 |
| Surface temperature | Landsat 8/9 Collection 2 Level-2, via Microsoft Planetary Computer | US public domain (USGS) |
| Population and age counts | Meta High Resolution Population Density (Data for Good), via HDX | CC BY 4.0 |
| Population cross-check | WorldPop constrained 100 m, Pakistan | CC BY 4.0 |
| Green cover and built surface | ESA WorldCover 10 m | CC BY 4.0 |
| Health facilities | OpenStreetMap | ODbL 1.0 |
| Census comparison | Pakistan Bureau of Statistics, 2023 census | Official statistics |
| Survival water figure | The Sphere Handbook 2018, p. 107 and Appendix 3 | Cited, not redistributed |
| Place names for the field briefs | OpenStreetMap place points | ODbL 1.0 |
| Basemap | Esri World Light Gray Canvas | Free, no key required |
| Map library | Leaflet 1.9.4 | BSD-2-Clause |
Attribution
Basemap tiles © Esri — Esri, HERE, Garmin, © OpenStreetMap contributors, and the GIS user community. Boundary, road and facility data © OpenStreetMap contributors, available under the Open Database License.
Licences for this project
- Code: MIT.
- This text and the documentation: CC BY 4.0.
- The processed data: ODbL 1.0 — it contains values derived from OpenStreetMap, so the share-alike terms apply.
Reproducing this
Everything is open. The repository is samrajukrani0-tech/karachi-heat-map; every raw download is checksummed, and the pipeline rebuilds the whole model from the cache.