Ground‐based measurements of ozone and NO<sub>2</sub>during MANTRA 1998 using a Zenith‐sky spectrometer
Bibliographic record
Abstract
ABSTRACT A portable ground-based instrument has been constructed for the automated measurement of vertical column abundances of a number of gases pertinent to stratospheric ozone chemistry. The instrumentation is described in this paper and results are presented from the first set of field measurements, made during the Middle Atmosphere Nitrogen TRend Assessment (MANTRA) 1998 field campaign at Vanscoy, Saskatchewan, Canada. Zenith-sky spectra in the near ultraviolet and visible wavelength regions were recorded for a period of seven days, prior to and following the launch of the MANTRA balloon on 24 August 1998. The spectra were then analysed using the differential optical absorption spectroscopy (DOAS) technique in conjunction with a radiative transfer model to determine vertical column amounts of ozone and NO2. Ozone measurements compared favourably with concurrent observations by ozonesondes, a Brewer spectrophotometer, and satellite instruments. Vertical NO2 columns were in broad agreement with those determined by the Global Ozone Monitoring Experiment (GOME) satellite instrument. RÉSUMÉ [Traduit par la rédaction] Un instrument terrestre portable a été construit pour mesurer automatiquement l’abondance, dans une colonne verticale, de divers gaz ayant un rôle à jouer dans la chimie de l’ozone stratosphérique. Cet article décrit l’instrumentation et présente les résultats du premier ensemble de mesures faites dans le cadre de l’étude sur le terrain de 1998 pour l’Évaluation des tendances de l&apos;azote dans l&apos;atmosphère moyenne (MANTRA), à Vanscoy, en Saskatchewan, au Canada. Des spectres du ciel au zénith dans les régions de longueurs d’ondes visible et proche-ultraviolet ont été enregistrés sur une période de sept jours, avant et après
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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 | 0.001 |
| 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 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".