MUF variability in the Arctic region: A statistical comparison with the ITU‐R variability factors
Why this work is in the frame
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Bibliographic record
Abstract
Abstract The maximum usable frequency (MUF(3000) F 2) decile factors obtained from observations at five stations located in the Arctic region: Resolute (74.75°N, 265.10°E), Dikson (73.50°N, 80.40°E), Norilsk (69.40°N, 88.10°E), Loparskaya (68.00°N, 33.00°E), and Sodankyla (67.40°N, 26.60°E) have been compared with the International Telecommunication Union (ITU‐R) estimates over three solar cycles (1961–2013). The summer MUF(3000) F 2 variability has been found to lie in the range of ±0.2, whereas limits for equinox and winter seasons are ±0.3 and ±0.5, respectively. This observation seems to directly translate into high differences between the measurement‐derived and ITU‐R decile values in winter and the smaller values for summer. These results illustrate that the high latitude ionosphere, and thus the MUF, is highly variable in winter, followed by the equinox, and experiences a low variability in summer.
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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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it