Satellite perimeters

Timestamped fire-perimeter polygons estimated from hotspot clusters.

deepfire:satellite-perimeters — fire perimeter polygons estimated from clusters of satellite hotspots, current and historical (snapshots since June 2026). Geometry: MultiPolygon (EPSG). Feature IDs: satellite-perimeters.<uuid>.

Each row is a timestamped snapshot: a cluster gets a new row whenever its perimeter geometry materially changes, and older snapshots are kept.

Attributes

Property	Type	Notes
`id`	uuid	Feature key (surfaced as `satellite-perimeters.<uuid>`), per snapshot
`cluster_id`	uuid	Owning cluster — joins to `deepfire:clusters`
`computed_at`	timestamp (ISO 8601)	When the snapshot was computed
`observed_watermark`	timestamp, nullable	Satellite acquisition time of the latest hotspot fed in
`n_hotspots`	number	Detections used to build the polygon
`area_m2`	number, nullable	Enclosed area (m²)
`perimeter_m`	number, nullable	Perimeter length (m)
`algo_version`	string	Algorithm version (e.g. `circle-union-v2`)
`active`	boolean	Whether the owning cluster is currently active

Examples

Active perimeter snapshots in a bounding box (California):

curl -sG -H "Authorization: Bearer $TOKEN" \
  "https://api.deepfire.co/ogc/features/v1/collections/deepfire:satellite-perimeters/items" \
  --data-urlencode "bbox=-125,32,-114,42" \
  --data-urlencode "filter-lang=cql2-text" \
  --data-urlencode "filter=active = true" \
  --data-urlencode "f=application/geo+json"

All snapshots for one fire (sort client-side by computed_at for the growth history):

curl -sG -H "Authorization: Bearer $TOKEN" \
  "https://api.deepfire.co/ogc/features/v1/collections/deepfire:satellite-perimeters/items" \
  --data-urlencode "filter-lang=cql2-text" \
  --data-urlencode "filter=cluster_id = 'aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee'" \
  --data-urlencode "f=application/geo+json"

Full parameter reference: Get satellite perimeters.