Tropical cyclones intensify faster than 20th-century models predict
Per °C increase in ocean heat content, peak cyclone wind speed increases >7%, exceeding the Emanuel scaling (~5%/°C) used in most models.
Catastrophe model wind-speed distributions need uplift. Insurance pricing for coastal exposure recalibrates upward 15-25% within 5 years.
Threshold proximity
live · falsifies ◀ current ▶ supportsMetric: Regression slope: ln(max cyclone wind) vs ocean heat content (10⁸ J/m²)
Live Earth signals · 3 endpoints feeding this
streaming…/api/cyclones
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/api/ocean
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/api/marine
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Why this is a cross-correlation hypothesis
Captain reads 3 Earth API endpoints together (/api/cyclones + /api/ocean + /api/marine). The hypothesis emerges only at their intersection — none of these streams alone reveals the pattern.
Experiment design
how Captain tests thisOLS regression of annual peak cyclone wind speed against ocean heat content per basin (Atlantic, Pacific, Indian). Compare slopes against historical Emanuel-scaled prediction. Test for departure.
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-
Skeptic challenge #01 raisedCould the pattern be driven by data-collection bias on /api/cyclones? If upstream measurement coverage has expanded over the test window, the signal may be detection-density artefact rather than real change.
resolvedBacktest restricted to stations / cells with continuous coverage across the full window. If signal survives the coverage-stable subset, the artefact concern is rejected.
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Fact-Checker challenge #02 raisedIs the SUPPORTS threshold ("Observed slope > 1.07 per °C") tighter than upstream measurement uncertainty? A threshold inside the instrument noise floor cannot be defensibly crossed.
resolvedThreshold 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.
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Researcher challenge #03 raisedConfounder: Synoptic variability and multi-year teleconnections must be filtered before the climate-scale signal emerges.
resolvedMultivariate regression / mediation analysis with the named confounder explicitly entered; the cross-correlation signal must retain significance after controlling.
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Compliance-Guard challenge #04 raisedImplications touch enforceable disclosure or pricing regimes. Premature publication risks creating reliance interest before the FALSIFIES threshold ("Observed slope ≤ 1.05 per °C") is shown to be reachable in practice.
resolvedPublic spec carries explicit FORMING/MONITORING status and a "do not underwrite on the basis of this hypothesis" footer until SUPPORTED. Updates to the catalogue are timestamped and archived.
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Skeptic challenge #05 raisedWhat does it take to falsify? The current FALSIFIES line is "Observed slope ≤ 1.05 per °C" — confirm this is genuinely reachable given the underlying data variance, not just the inverse-sign mirror of SUPPORTS.
resolvedFalsification 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 Mar 10, 2026 · last revised Mar 3, 2026-
formingMar 10, 2026 · first observed
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monitoringMay 10, 2026 · data stream established
Downstream implications if supported
finance · policy · disclosure · litigation- Cat-bond pricing on coastal exposure needs major recalibration
- Building codes for cyclone-exposed zones need urgency upgrade
- Mortgage-loan duration on coastal property re-priced
Originality
novelThis 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.
Related hypotheses
shares module or endpointsProvenance
- Hypothesis ID
- cyclone-ocean-heat-intensification
- Module
- weather
- Endpoints
- /api/cyclones, /api/ocean, /api/marine
- Council
- 3 voices
- Proposed
- Mar 10, 2026
- Last revision
- Mar 3, 2026
- Current status
- monitoring
- Originality
- NOVEL
- Cite
- Captain Landseed (2026). "Tropical cyclones intensify faster than 20th-century models predict" hypothesis ID cyclone-ocean-heat-intensification. captainlandseed.landseed.earth/h/cyclone-ocean-heat-intensification/
Run this hypothesis through the live council
15 personas deliberate. ~$0.033 fast mode. Three free runs, then BYOK Anthropic / OpenAI / Gemini.
Test "Tropical cyclones intensify faster than 20th-century models predict" ✨