OCHA Centre for Humanitarian Data

Flood monitoring

Satellite flood extents for humanitarian response: how Copernicus Global Flood Monitoring is read and turned into affected-population estimates, and whether combining it with FloodScan, GFDS and VIIRS gives a better daily flood map than any one of them.

Analyses

Flood fusion: analysis and results

One daily probability of flooding on a 1 km grid from four satellite products, tested against 170 expert flood maps in Africa, Asia, South America and Oceania. What is classified and how, what fusion adds, where it falls short of a simple rule, and the open decisions. A checkpoint of the working analysis.

/fusion/Quarto book, checkpoint 2026-10-21

Global Flood Monitoring: exploration

Querying GFM, temporal compositing, population exposure, the production pipeline, alternative flood sources and a downscaling proof of concept, with worked examples for Cameroon.

/gfm-exploration/Moved here from /

Global Flood Monitoring book

The earlier narrative book on GFM, hosted on Netlify.

ds-global-flood-monitoring.netlify.appexternal

Access. Everything listed here is public — no sign-in, no passphrase.

Adding a page? Add a card above and publish it under its own path with scripts/publish_pages.sh; never quarto publish gh-pages, which wipes the branch. See the README's "Pages site" section.