cff-version: 1.2.0
title: "Petrel Ignition Density Layer v0.3 Global ML"
message: "If you use this dataset, please cite it as below."
type: dataset
authors:
  - name: "Petrel"
    website: "https://petreldata.io"
date-released: "2026-07-10"
version: "v0.3-global-ml"
license: "CC-BY-NC-4.0"
url: "https://petreldata.io/layers/ignition/v0.3"
keywords:
  - "wildfire"
  - "ignition"
  - "fire occurrence"
  - "lightning"
  - "anthropogenic fire"
  - "wildland-urban interface"
  - "Cell2Fire"
  - "global"
abstract: >
  Global ignition-propensity dataset at native ~5 km (0.05°) resolution,
  in three layers: anthropic ignition susceptibility P(fire | human
  context) from a gradient-boosted classifier on GHSL settlement, HYDE
  land-use, and Köppen-Geiger covariates trained on NASA FIRMS
  fire-presence labels; lightning ignition relative index (0–1) from
  the NASA LIS/OTD flash climatology scaled by a per-Köppen empirical
  p(ignition|flash); and a combined total ignition propensity in [0,1]
  (a relative field, not an absolute rate) that drives the ignition
  sampler of the Petrel Wildfire Hazard. Coast-clipped to the GSHHG
  full-resolution shoreline; Antarctica excluded. v0.3 is qualitatively
  checked against GFED fire geography; quantitative validation is
  scheduled for v0.3.