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OCHA Centre for Humanitarian Data

CEMS-UNOSAT

The two public flood-label corpora — Copernicus Emergency Management Service rapid mapping and UNOSAT — harvested, archived and catalogued as training and evaluation data: what exists, what was archived, and what each label actually mapped.

Flood labels

Flood labels — CEMS + UNOSAT viewer

Both flood-label corpora on one globe: 2,715 CEMS label sets from 283 activations (2012–) and 867 UNOSAT label sets from 180 flood and cyclone events (2014–), each with its acquisition interval. Water at acquisition and flood extent drawn separately; filter by source, region, country and period; step through an event acquisition by acquisition.

/cems-unosat/flood-labels/

CEMS flood archive — harvest ledger

Every Copernicus EMS Rapid Mapping flood activation since 2012, archived to blob with a transparency ledger: what exists, what we archived, what upstream lost, and what is inside every zip. Regenerated from the ledger after each harvest run.

/cems-unosat/cems-flood-archive/

CEMS flood labels — viewer (superseded)

The CEMS-only predecessor of the combined viewer: 2,715 observed flood extents from 283 activations with per-image acquisition times. Kept until retired.

/cems-unosat/cems-flood-labels/