Rapid thermohaline transition in the Pacific western subarctic and Oyashio fresh core eddies
Bibliographic record
Abstract
Seven years of conductivity‐temperature‐depth data enable direct computations of volume transport and a description of the temporal changes of water properties in the western subarctic Pacific. The cooling of the western subarctic surface layer is shown through the observation of the thermohaline transition, which occured in the western subarctic during 1990–1997. Its main consequences were changes of the Oyashio path and restratification of the western subarctic water. The example presented here uses data obtained during the Canada/Russia International North Pacific Ocean Climate Study, as well as the Russian project Subarctic to show that a warming and ventilation of the midlayers of the western subarctic (200–1000 dbar) occurred because of the influx of warm subtropical waters to the Oyashio and Sea of Okhotsk and to the weak coastal Oyashio before the transition. This influx appears to have reversed in the early 1990s; now subarctic intermediate waters displace the remnants of subtropical waters that penetrated to the Sea of Okhotsk through the Soya Strait and create strong stratification in the Oyashio area. This transition appears to have begun during the reinforcement in the coastal Oyashio.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".