Dimethyl sulfide oxidation in the polluted marine boundary layer : a zero dimensional model study
Bibliographic record
Abstract
A comprehensive DMS oxidation reaction mechanism was added to a chemical box model (Model of Chemistry Considering Aerosols - MOCCA) to investigate how atmospheric sulfate levels are affected by pollution in the marine boundary layer. The interaction of a remote air mass with a polluted coastal air mass containing elevated NOx, alkane, and alkene levels was simulated for a mid-latitude region of the Northern Hemisphere. Model runs from different settings were compared with respect to species concentrations, branching ratios, and product yields. Results showed moderate decreases in gas phase DMS, DMSO, DMSO2, and MSA concentrations, and increases of approximately 7% and 100% for SO2 and H2SO4 , respectively. A sensitivity analysis was completed to determine how variations in temperature, DMS emission, NO emission, aerosol characterization, accommodation coefficients, PAN reactions, and a background SO2 emission influence the results.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| 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".