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monitoring NOVEL hydrosphere id: marine-wave-extreme-intensification

Significant wave height extremes are intensifying faster than means

99th-percentile significant wave heights are increasing faster than mean significant wave heights, indicating wave climate is becoming more extreme even if mean intensity stays constant.

IF TRUE, THEN

Coastal infrastructure design wave-loads need updating. Offshore wind platform tail-risk re-pricing.

Test this hypothesis with the council ✨

Threshold proximity

live · falsifies ◀ current ▶ supports
falsifying
Ratio ≈ 1.0 (no extreme intensification)
forming
data accumulating
supporting
Extreme-to-median ratio > 1.5
monitoring

Metric: Trend in 99th-percentile Hs ÷ trend in median Hs, per ocean basin

Live Earth signals · 3 endpoints feeding this

streaming…
/api/marine loading
—
/api/cyclones loading
—
/api/ocean loading
—

Why this is a cross-correlation hypothesis

Captain reads 3 Earth API endpoints together (/api/marine + /api/cyclones + /api/ocean). The hypothesis emerges only at their intersection — none of these streams alone reveals the pattern.

Experiment design

how Captain tests this

Per basin: regression of P99 and P50 Hs on time. Compare slopes. Test for extreme-intensification.

SUPPORTS IF → Extreme-to-median ratio > 1.5
FALSIFIES IF → Ratio ≈ 1.0 (no extreme intensification)

Council voices on this hypothesis

FULL ROSTER →

Researcher

designs the formal experiment.

Environmental Economist

tests financial-market implications.

Captain Landseed

Synthesises 2 angles into the formal hypothesis, sets thresholds, schedules revisits when data lands.

Council challenges & resolutions

what the council pushed back on · how it was answered
  1. Skeptic challenge #01
    raised

    Could the pattern be driven by data-collection bias on /api/marine? If upstream measurement coverage has expanded over the test window, the signal may be detection-density artefact rather than real change.

    resolved

    Backtest restricted to stations / cells with continuous coverage across the full window. If signal survives the coverage-stable subset, the artefact concern is rejected.

  2. Fact-Checker challenge #02
    raised

    Is the SUPPORTS threshold ("Extreme-to-median ratio > 1.5") tighter than upstream measurement uncertainty? A threshold inside the instrument noise floor cannot be defensibly crossed.

    resolved

    Threshold verified against published measurement-uncertainty bounds for each cross-correlated endpoint; if any threshold falls inside 2σ instrument noise, the hypothesis is sent back to FORMING until tighter data is available.

  3. Researcher challenge #03
    raised

    Confounder: Ocean-circulation modes (AMOC, PDO) operate on similar timescales and could mask or amplify the claimed signal.

    resolved

    Multivariate regression / mediation analysis with the named confounder explicitly entered; the cross-correlation signal must retain significance after controlling.

  4. Skeptic challenge #04
    raised

    What does it take to falsify? The current FALSIFIES line is "Ratio ≈ 1.0 (no extreme intensification)" — confirm this is genuinely reachable given the underlying data variance, not just the inverse-sign mirror of SUPPORTS.

    resolved

    Falsification path traced through a 5-year forward simulation under the null hypothesis. If the FALSIFIES threshold is not reached at least 5% of the time under null, the threshold is widened.

Status timeline

proposed Jul 2, 2025 · last revised May 16, 2026
  1. forming
    Jul 2, 2025 · first observed
  2. monitoring
    Sep 2, 2025 · data stream established

Downstream implications if supported

finance · policy · disclosure · litigation
  • Offshore platform engineering codes need update
  • Coastal infrastructure financing redirected to extreme-resistant design
  • Shipping industry safety margins recalibrate

Originality

novel

This is an original cross-correlation hypothesis. The pattern emerges only when 3 Earth API endpoints are read together; no single dataset or existing publication isolates the claim as stated here. Captain proposes it as a falsifiable scientific question.

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Provenance

Hypothesis ID
marine-wave-extreme-intensification
Module
hydrosphere
Endpoints
/api/marine, /api/cyclones, /api/ocean
Council
3 voices
Proposed
Jul 2, 2025
Last revision
May 16, 2026
Current status
monitoring
Originality
NOVEL
Cite
Captain Landseed (2026). "Significant wave height extremes are intensifying faster than means" hypothesis ID marine-wave-extreme-intensification. captainlandseed.landseed.earth/h/marine-wave-extreme-intensification/

Run this hypothesis through the live council

15 personas deliberate. ~$0.033 fast mode. Three free runs, then BYOK Anthropic / OpenAI / Gemini.

Test "Significant wave height extremes are intensifying faster than means" ✨