Twelve‐hour tides in the winter northern polar mesosphere and lower thermosphere
Bibliographic record
Abstract
An investigation of the tidal oscillations near the winter northern polar mesopause has been carried out at Resolute Bay, Canada (74.9°N, 94.9°W). The daily, monthly, and annual variations of the tidal field were studied using the 1995/1996 and 1996/1997 data. Ground‐based measurements were obtained using a Fabry‐Perot interferometer with a circle to line interferometric optical system (FPI/CLIO) and the E Region Wind Interferometer (ERWIN). The FPI/CLIO observed the Doppler winds of the OH emission near 86 km altitude. The ERWIN provided simultaneous OH (near 86 km) and OI (near 97 km) wind measurements. Monthly data were compared to the Global Scale Wave Model (GSWM) and the Forbes/Vial Solar Semidiurnal Tidal Model predictions. Analysis of the 12‐hour oscillation near 86 and 97 km altitudes indicates that it is persistent and characteristic of a semidiurnal propagating tide. The semidiurnal tide was found to be highly variable in amplitude and phase from day to day. The observations presented provide a continuous and extensive data set for the winter season.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 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".