Opportunities for CLIVAR/PAGES NAO Studies
Bibliographic record
Abstract
ence of declining summer insolation by the orbital factors.Both the MWP and a two-phased LIA are detectable in the data set, as well as rapid cooling and warming intervals, happening over a decade: Note cold-warm-cold phase in the period 1300-1450 AD according to the time scale of the core.Possible century scale cycles may be identified in the data set, but await improved chronological control.In the figure we have compared this record with the SST record from Bermuda Rise over the same time period recently published (Keigwin, 1996; Keigwin and Pickart, 1999) (Fig. 1A).The lower temporal resolution of the sediment section and possibly a higher degree of bioturbation at this site, has probably worked as a low pass filter on the variability over Bermuda Rise.Hence, only the main multicentennial scale variations may be compared at this stage.SST changes associated with the MWP and LIA at Bermuda Rise were of the same order of magnitude as in the Norwegian Sea.The timing of the warm and cold phases are not identical.This may be due to the bioturbation filtering, time scale problems, or time scale inaccuracies.Hence, improved temporal resolution and chronologies are required to further compare the spatial SST variability in the North Atlantic.An important path to follow by further investigations is the intriguing proposition of Keigwin and Pickart (1999).They suggest that opposite SST anomalies between the Western North Atlantic and the Labrador Sea region were developed during the LIA in a similar way as the anomaly pattern known from the NAO phases (see Sarachik, this issue).This work is now underway.Under the auspices of the PAGES marine program, IMAGES, a large community based coring expedition was conducted in the summer of 1999, using the unique large coring system of the French RV Marion Dufresne.A large number of sites dedicated for ultrahigh resolution studies of this type were cored in the Circum Atlantic and the Nordic Seas.A new era of very high-resolution paleoceanographic reconstructions has been initiated by this cruise, and a wealth of new high quality data can be expected in the next years.This holds good promise for future interaction between the paleoceanogrphy community of PAGES and CLIVAR.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| 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 | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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 teacher head, 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".