Resolute Bay VHF radar: A multipurpose tool for studies of tropospheric motions, middle atmosphere dynamics, meteor physics, and ionospheric physics
Bibliographic record
Abstract
A VHF radar has been established at a site near Resolute Bay in Nunavut, Canada (75°N, 95°W), which has the capability to make a variety of measurements relating to the atmospheric and ionospheric environment in the polar regions. The site is very close to the north geomagnetic pole, and therefore the radar is well situated to make some unique measurements. The system is a multipurpose instrument with good remote control capabilities. It can be used as a wind profiler radar to study the lower troposphere, as a mesospheric radar to study polar mesosphere summer echoes (PMSE) in summer, as a meteor radar to determine winds in the altitude region of 80–100 km, and as an ionospheric radar to study 3 m scale irregularities in the E and F regions. The radar has some unique design features, partly dictated by the rough terrain in which it is sited. In this paper, the radar system is described, including description of some unusual approaches to deal with special conditions at the site, and then some key early results are presented. Important findings include error determinations for tropospheric wind measurements, detection of PMSE, correlations between PMSE and atmospheric temperatures at 86 km altitude, measurements of mean winds and tidal characteristics over a full year, and detection of various normal modes of oscillation in the 80–100 km region, especially in nonsummer months. Some of these features will be discussed here, but more detailed discussions will be left to related papers in this issue.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".