Initial uptake of ozone on Saharan dust at atmospheric relative humidities
Bibliographic record
Abstract
To better evaluate heterogeneous loss mechanisms for ozone in the atmosphere, the initial uptake kinetics of ozone on mineral dust surfaces was studied at room temperature under dry conditions and at elevated relative humidity. Ozone was added to a static absorption cell containing a glass tube coated with a thin film of Saharan dust collected from silt deposits on the Cape Verde Islands. Ozone concentrations were monitored by UV absorption at 254 nm, from which the reactive uptake coefficient in the first 10 s was calculated. An increase in initial ozone concentration from 2 × 1012 to 1 × 1014 cm−3 results in a decrease in the initial reactive uptake coefficient from 6 × 10−6 to 2 × 10−7, respectively, revealing a negative dependence of initial reactive uptake on initial ozone concentration. Simultaneously exposing the Saharan dust to ozone and water vapor at 50% and 75% relative humidity does not significantly change the initial reactive uptake coefficient.
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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 | 0.000 | 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 | 0.000 |
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".