Uptake and sequestration of atmospheric CO<sub>2</sub> in the Labrador Sea deep convection region
Bibliographic record
Abstract
The Labrador Sea is an important area of deep water formation and is hypothesized to be a significant sink for atmospheric CO 2 to the deep ocean. Here we examine the dynamics of the CO 2 system in the Labrador Sea using time‐series data obtained from instrumentation deployed on a mooring near the former Ocean Weather Station Bravo. A 1‐D model is used to determine the air‐sea CO 2 uptake and penetration of the CO 2 into intermediate waters. The results support that mixed‐layer p CO 2 remained undersaturated throughout most of the year, ranging from 220 μ atm in mid‐summer to 375 μ atm in the late spring. Net community production in the summer offset the increase in p CO 2 expected from heating and air‐sea uptake. In the fall and winter, cooling counterbalanced a predicted increase in p CO 2 from vertical convection and air‐sea uptake. The predicted annual mean air to sea flux was 4.6 mol m −2 yr −1 resulting in an annual uptake of 0.011 ± 0.005 Pg C from the atmosphere within the convection region. In 2001, approximately half of the atmospheric CO 2 penetrated below 500 m due to deep convection.
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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 | 0.001 | 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) | 0.000 | 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".