LINKING TEMPERATURE OF THE NORTHWEST ATLANTIC AND ATLANTIC MERIDIONAL OVERTURNING CIRCULATION (AMOC)
Bibliographic record
Abstract
The Northwest Atlantic Shelf and Slope is a region where cold waters transported southward in the Labrador Current can encounter warmer waters of the Gulf Stream. Increasing the proportion of Gulf Stream waters causes warming of the Northwest Atlantic Shelf, as was observed after 2008. This shift toward more Gulf Stream waters was linked to the greater eastward diversion of the Labrador Current near the Tail of the Grand Banks of Newfoundland (TGB) after 2008. Because the Labrador Current carries some of the dense waters of the equatorward branch of the Atlantic Meridional Overturning Circulation (AMOC), we hypothesize that the Labrador Current’s eastward diversion could signify an AMOC slowdown. Using two eddy-resolving ocean models, we explore the connection between Northwest Atlantic Shelf and Slope warming and AMOC decline. The first model uses realistic atmospheric forcing to simulate the years 1978-2017. The second model is a fully ocean-atmosphere coupled climate model run for hundreds of years with preindustrial concentrations of greenhouse gases in the atmosphere. The results show that warming in the Northwest Atlantic Shelf and Slope is correlated with slowing of the AMOC. It also shows that interannual variability in equatorward transport of dense waters at the TGB is highly correlated with the full, cross-basin AMOC.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".