CryoHealth-geo Pipeline: Scene to Hazard Score

CryoHealth-geo Pipeline: Scene to Hazard Score A data-flow diagram generated by Archify. 01 / Acquire 02 / Measure 03 / Store 04 / Score 05 / Report Sentinel-2 L2A · newest per AOI · 01 / Acquire · STAC Sentinel-2 L2A newest per AOI STAC Cloud gate · SCL-masked · 02 / Measure · ≤ 50% Cloud gate SCL-masked ≤ 50% NDWI area · water px × 100 m² · 02 / Measure · 10 m NDWI area water px × 100 m² 10 m lakes · static fields · 04 / Score · seeded lakes static fields seeded observations · area · cloud · 03 / Store · run_id observations area · cloud run_id GLO-30 DEM · terrain slope · 04 / Score · cached GLO-30 DEM terrain slope cached WorldPop · 5 km pop. · 03 / Store · cached WorldPop 5 km pop. cached Hazard index · v1.0 · 6 inputs · 04 / Score · pure Hazard index v1.0 · 6 inputs pure CryoHealth-api · tier + alert policy · 05 / Report · x-api-key CryoHealth-api tier + alert policy x-api-key B03·B08·SCL usable px upsert 548 days dam · glacier slope exposure score · tier Legend primary data prioritisation only data store data flow

Measure

  • • Scenes over 50% cloud at the AOI are skipped; the next candidate is tried
  • • Snow/ice (SCL 11) stays unmasked so lake edges are not clipped
  • • A lake with no observation in 60 days is flagged stale

Score

  • • Weights: growth 0.30 · dam 0.20 · GLOF history 0.15 · seasonal 0.15 · slope 0.10 · glacier 0.10
  • • Tiers: critical ≥ 0.65 · high ≥ 0.45 · watch ≥ 0.25
  • • Missing signals score zero risk, never re-weighted

Report

  • • Population exposure is stored for prioritisation and never changes the tier
  • • The API, not this service, decides whether a tier change raises an alert