Research

Research

PTEM maintains a public research surface to support external review of observable structural measurement behavior under reproducible conditions.

Public artifacts provide a bounded evidence layer without disclosing governed internal mechanics.

Public artifacts document a consistent relationship between persistent multi-scale structural regimes and elevated rapid intensification likelihood under forward-only replay conditions.

Validation methodology and governance framework are described in the Validation section.

A reproducible evaluation interface is available for independent verification of structural conditioning behavior.

From Public Signal to Governed Conditioning

PTEM maintains a deliberate separation between its public audit surface and its governed instrument architecture.

Public layer — Tier 1

Early PTEM research established a minimal, reproducible diagnostic based on persistent multi-scale temporal coherence derived from best-track data. This diagnostic demonstrates a consistent statistical relationship with elevated rapid intensification likelihood under forward-only replay conditions.

This layer is fully reproducible, audit-safe, and intentionally limited in scope. It serves as a public proxy for observable structural behavior, not as the full PTEM system.

Instrument layer — governed architecture

The operational PTEM system is built on a frozen structural spine and governed structural invariants that extend beyond the public diagnostic.

From this system, Phase Atlas constructs a basin-scale structural climatology surface describing when extreme-loss-producing regimes are structurally possible. PAC applies that climatology as a deterministic conditioning layer to external event sets. Capital Impact translates conditioned outputs into capital-relevant tail metrics under identical inputs.

These layers are forward-only, deterministic, manifest-backed, governed, and reproducible, but they are not derived from the public persistence diagnostic.

Correct mental model

• Persistence diagnostic = public, minimal, reproducible proxy
• Structural Spine → Phase Atlas → PAC → Capital Impact = governed instrument pipeline

PTEM constructs a governed structural climatology from a frozen structural spine, applies it deterministically to external event sets, and reports how tail-risk metrics change under that constraint — without modifying catastrophe models.

Multimodal structural observations (limited public surface)

PTEM has conducted additional research using independent observational modalities, including microwave-derived inner-core structure, to evaluate structural organization under forward-only constraints.

These observations indicate that structural signals across modalities are not redundant and become aligned only within coherent structural regimes. Multimodal inputs act as conditional refinement layers and are not required for baseline structural measurement.

Public-facing materials may include limited observational comparisons. These do not represent the operational PTEM instrument or its full multimodal construction.

Additional multimodal work will be released as it clears validation and publication controls.

Public research artifacts

Tier 1 public artifacts are published for reproducibility, audit posture, and institutional evaluation.

Additional work is currently under peer review and will be added as it clears publication and release controls.

Tier-1 Persistence Capacity Surface

A public, audit-safe climatology layer for structural availability.

Across the full Atlantic record (1851–2024), PTEM maintains a Tier-1 persistence-derived climatology surface describing the fraction of basin time spent in sustained multi-day organization states.

This layer shows that sustained organization is sparse, time-varying, and occasionally absent. Some seasons contain storms but no extreme persistence-regime occupancy.

The surface is derived from best-track data under forward-only constraints and serves as a minimal, reproducible baseline for structural availability. It does not represent the full PTEM structural system, Phase Atlas, PAC, or a forecast model.

• Full Atlantic coverage: 1851–2024
• 1,991 storms aligned to the frozen Atlantic v1.2 spine
• Forward-only construction
• Annual regime-occupancy surface
• Extreme organization capacity is sparse and variable
• Storm count alone does not determine structural availability

Extreme hurricane behavior depends on whether the basin is in a state capable of sustaining organization, not simply on how many storms occur.

Exposure boundary

The public layer supports reproducible review of observable results and measurement posture. Governed instrument logic, calibration procedures, and structural construction remain outside the public surface.