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monitoring NOVEL hydrosphere id: ocean-atmosphere-coupling-velocity

Ocean-atmosphere coupling timescale is shortening

Lag between atmospheric forcing (CO₂ trend) and ocean response (SST anomaly, sea ice extent) is compressing from historical multi-year to sub-annual.

IF TRUE, THEN

Climate sensitivity (transient climate response) effectively higher than IPCC AR6 best estimate of 1.8°C / 2× CO₂.

Test this hypothesis with the council ✨

Threshold proximity

live · falsifies ◀ current ▶ supports
falsifying
Lag stable or lengthening
forming
data accumulating
supporting
Lag < 18 months sustained over 5-year window
monitoring

Metric: Cross-correlation lag (months) between 24-mo CO₂ growth and global SST anomaly

Live Earth signals · 4 endpoints feeding this

streaming…
/api/co2 loading
—
/api/temp loading
—
/api/seaice loading
—
/api/ocean loading
—

Why this is a cross-correlation hypothesis

Captain reads 4 Earth API endpoints together (/api/co2 + /api/temp + /api/seaice + /api/ocean). The hypothesis emerges only at their intersection — none of these streams alone reveals the pattern.

Experiment design

how Captain tests this

Maximum cross-correlation function between detrended 24-mo CO₂ Δ and global SST anomaly. Compute lag-of-max-correlation in rolling 10-yr windows. Decreasing trend confirms.

SUPPORTS IF → Lag < 18 months sustained over 5-year window
FALSIFIES IF → Lag stable or lengthening

Council voices on this hypothesis

FULL ROSTER →

Researcher

designs the formal experiment.

Science Writer

frames the claim for a non-specialist audience.

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/co2? 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 ("Lag < 18 months sustained over 5-year window") 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 "Lag stable or lengthening" — 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 Mar 19, 2026 · last revised May 16, 2026
  1. forming
    Mar 19, 2026 · first observed
  2. monitoring
    May 19, 2026 · data stream established

Downstream implications if supported

finance · policy · disclosure · litigation
  • TCR estimates need upward revision
  • Carbon-budget calculations under-protective

Originality

novel

This is an original cross-correlation hypothesis. The pattern emerges only when 4 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
ocean-atmosphere-coupling-velocity
Module
hydrosphere
Endpoints
/api/co2, /api/temp, /api/seaice, /api/ocean
Council
3 voices
Proposed
Mar 19, 2026
Last revision
May 16, 2026
Current status
monitoring
Originality
NOVEL
Cite
Captain Landseed (2026). "Ocean-atmosphere coupling timescale is shortening" hypothesis ID ocean-atmosphere-coupling-velocity. captainlandseed.landseed.earth/h/ocean-atmosphere-coupling-velocity/

Run this hypothesis through the live council

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

Test "Ocean-atmosphere coupling timescale is shortening" ✨