Climatic effect on DMS producers in the NE sub-Arctic Pacific: ENSO on the upper ocean
Why this work is in the frame
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Bibliographic record
Abstract
We examined dimethylsulphide (DMS) data of two locations (P26 and P20) 1996–2001 in sub-Arctic NE Pacific with emphasis on 2 yr of DMS production measured in June and September of 1999 and 2000. At Station P26, integrated DMS to mixed layer depth (MLD) in June during 1999–2001 La Ni˜na period averaged 102 ± 25 μmol m-2 or only 42% of the average of 242 ± 27 μ mol m-2 measured during 1997–1998 El Ni˜no period. The summer integrated DMS to MLD of 246 μmol m-2 in the year 2000 was 61% of summer average in the period 1996–1998 of 402 ± 115 μmol m-2. At Station P20 where the mean DMS level of the MLD in June during the La Ni˜na years of 1999–2001 was 77 ± 7 μmol m-2, about 35% of 232 ± 22 μmol m-2 during the 1997–1998 El Ni˜no. Phytoplankton species rich in DMSP (an algal precursor to DMS) were also more abundant in 1998 than in the years 1999–2001 with low DMS. The ENSO event was characterized by warmer, more stratified waters with MLD shallowing to about 19 m from 1996 to early 1998, compared to the following years. These results provide a first example of how climate fluctuations, through altering the physical and chemical properties of the upper ocean, may influence the structure of the phytoplankton assemblage and hence DMS concentrations in the open ocean.
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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 | 0.001 | 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) | 0.001 | 0.001 |
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 it