A dinoflagellate cyst perspective on the surface circulation in the North Atlantic and Nordic seas during the Last Interglacial (MIS 5e)
Bibliographic record
Abstract
When looking for possible scenarios of future climate development, the last interglacial is a suitable candidate. This warm interval, know as Marine Oxygen Isotope Stage (MIS) 5e in marine sediments, lasted from ~130 000 to ~115 000 years ago, and is assumed to have been characterised by Holocene-like climatic boundary conditions. The northern North Atlantic and Nordic (Greenland, Iceland and Norwegian) seas are key areas in this context: the warm water masses that are advected into the region through the northward flowing Gulf Stream/North Atlantic Drift surface current system interact with the southward flowing polar water masses of the East Greenland/Labrador Current, and they are among the few regions were overturning and deep-water formation occurs. Changes in the sea-surface conditions in this area can therefore steer climate by influencing the Meridional Overturning Circulation, and the feedbacks this has on the atmospheric circulation. The goal of the project is to reconstruct the sea surface conditions in the northern North Atlantic and Nordic seas during MIS 5e in order to trace changes in the interaction between the warm water masses of the Gulf Stream/North Atlantic Drift current system and the cold water masses of the East Greenland/Labrador Current. This will be done by qualitative and quantitative analysis of dinoflagellate cyst assemblages, algal remains with a proven potential for paleoclimate reconstructions, in sediments from key localities across the North Atlantic and Nordic seas.
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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 | 0.001 |
| Open science | 0.000 | 0.000 |
| 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".