The Developmental Morphospace of Wildfire

Fire VASE changes the response being explained. Instead of reducing a wildfire to final area, duration, or peak growth, it treats the ordered accumulation of burned area as an observed developmental history that can be compared across events.

Read the manuscript PDF Read the supplementary draft Inspect the corrected v2 evidence

The argument

The pathway matters, not only the endpoint

Two fires can reach similar final areas over similar durations through very different sequences: an early run followed by little change, persistent steady growth, a late surge, or repeated growth and quiescence. Fire VASE preserves those distinctions in a common geometry.

Relative developmental time runs upward through a VASE. Each observed slice adds a ring, and normalized cumulative burned area controls its width. The result is not a geographic perimeter or a fire-spread direction. It is a standardized record of when observed growth accumulated.

Developmental histories form a continuum

The manuscript describes gradients in the timing, concentration, persistence, and recurrence of observed growth. Named neighborhoods such as late surge, front-loaded plateau, or multi-pulse complex are interpretive landmarks, not discovered natural fire types. Intermediate and mixed pathways are part of the result.

Weather is an explanatory layer, not the definition

The developmental representation is constructed before weather is added. Weather is the first demonstration of a broader explanatory architecture in which fuels, terrain, active-edge conditions, ignition context, suppression, and the spatial geometry of progression can all be tested against the same developmental response.

The current evidence supports a restrained interpretation: weather associations are distributional and response-dependent. They do not uniquely specify an individual history, establish a universal growth response, or identify a causal mechanism.

State and mismatch generate better questions

Recent fire state explains substantially more subsequent observed growth than weather alone. Qualified weather-state interactions indicate that an exposure can have a different fitted association in different developmental contexts; they remain retrospective associations rather than operational or causal estimates.

Likewise, fires that are close in weather space but distant in developmental space—and the reverse—are useful candidate comparisons. They show where the present representation is insufficient and where fuels, terrain, suppression, active-edge exposure, or observation error should be tested. They do not, by themselves, establish excess mismatch or its ecological prevalence.

Evidence boundary

The manuscript PDF articulates the project-level scientific argument across the full FIRED population and a first final-centroid gridMET projection. The corrected v2 analysis is the repository authority for quantitative claims. It uses consecutively observed histories, a shape-only coordinate system, exact calendar-day transitions, day-specific exposure, and explicit null and stability tests. Its results narrow—but preserve—the central contribution: broad developmental gradients are useful and reproducible, while weather effects are weak, heterogeneous, and non-causal.

Supplementary document status

supplementary-2.pdf is a working supplementary draft. It contains explicit insertion markers and unfilled figure/table fields. Its completed methods architecture helps define the intended robustness tests, but unresolved values and result statements should not be cited as findings. Validated results live in analysis/scientific_validation/ and are summarized on the corrected v2 page.

Immediate research focus

The next step is not another endpoint model. It is to test the same developmental response against more process-specific, independently validated layers—especially active-edge fuel continuity and terrain aligned to dated observed growth—while improving observation-depth and burn-date uncertainty.