Datasets:
id stringclasses 6
values | time_window stringclasses 6
values | streams_included stringclasses 4
values | coupling_baseline_summary stringclasses 6
values | current_coupling_summary stringclasses 6
values | phase_lag_summary stringclasses 6
values | variance_summary stringclasses 6
values | coherence_loss_index float64 0.1 0.8 | leading_decoupled_systems stringclasses 6
values | phase_lag_shift stringclasses 4
values | variance_spike_flag stringclasses 2
values | transition_proximity_score float64 0.1 0.8 | key_breakpoint_evidence stringclasses 6
values | uncertainty_sources stringclasses 6
values | notes stringclasses 6
values | constraints stringclasses 1
value | gold_checklist stringclasses 1
value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
PTCLD-001 | stable_reference | atm+ocean+cryosphere+biosphere | Strong seasonal coupling; tight correlations | Correlations stable across streams | Small lags; stable timing | Variance low and stationary | 0.1 | none | none | no | 0.1 | No breakpoint detected | sampling gaps | Reference case | Under 280 words. | index+systems+lag+proximity |
PTCLD-002 | regional_fracture_start | atm+ocean+cryosphere | Coupling stable in prior decade | Ocean heat rises while sea-ice response becomes noisy | Lag increases between SST and sea-ice extent | Variance increases in sea-ice and jet metrics | 0.45 | cryosphere+atmosphere | lag_increase | yes | 0.4 | Sea-ice/jet coupling weakens in shoulder seasons | reanalysis dependence | Early fracture pattern | Under 280 words. | index+systems+lag+proximity |
PTCLD-003 | decoupling_growth | atm+ocean+cryosphere+biosphere | Tight coupling between SST, humidity, vegetation stress | Vegetation stress spikes without matching SST shift | Land-atmosphere lag grows | Variance spikes in soil moisture and VPD | 0.55 | biosphere+atmosphere | lag_increase | yes | 0.55 | Soil moisture/VPD divergence emerges | sensor bias; land coverage | Cross-scale strain | Under 280 words. | index+systems+lag+proximity |
PTCLD-004 | ocean_atm_phase_shift | atm+ocean | ENSO-linked coupling stable historically | Teleconnections weaken; patterns shift regionally | Lag pattern changes vs baseline | Variance rises in pressure fields | 0.6 | ocean+atmosphere | lag_pattern_change | yes | 0.6 | Teleconnection map changes vs baseline | internal variability | Phase structure change | Under 280 words. | index+systems+lag+proximity |
PTCLD-005 | cryosphere_threshold_behavior | ocean+cryosphere | Sea-ice tracks SST closely | Sea-ice drops faster than SST implies | Lag collapses then flips sign | Variance spikes at melt season onset | 0.7 | cryosphere | lag_flip | yes | 0.7 | Melt season onset shows abrupt coupling change | short records | Threshold-like signature | Under 280 words. | index+systems+lag+proximity |
PTCLD-006 | compound_decoupling | atm+ocean+cryosphere+biosphere | Multi-stream coupling stable | Multiple streams diverge at once; correlations fall | Lags increase across pairs | Variance spikes across streams | 0.8 | atm+cryosphere+biosphere | lag_increase | yes | 0.8 | Multi-stream correlation drop over 18 months | model spread | Broad coherence loss | Under 280 words. | index+systems+lag+proximity |
What this dataset tests
Detect early coherence loss across Earth subsystems.
Inputs are mixed summaries from
- paleo context
- modern sensors
- model state descriptors
Required outputs
- coherence loss index
- leading decoupled systems
- phase lag shift
- variance spike flag
- transition proximity score
- breakpoint evidence
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