F10.7 vs. QEUV: What is the Most Germane Solar EUV Proxy for Thermospheric and Space Weather Investigations?
Bibliographic record
Abstract
F10.7 is the current, standard index of variability in solar Extreme UltraViolet (EUV) irradiance. An alternative index of solar variability is QEUV, which has been retrieved using observations of Earth’€™s Far UltraViolet (FUV) airglow as well as EUV spectra modeled from solar EUV observations. Daily QEUV derived from FUV airglow is available from the recent TIMED-GUVI and GOLD missions, as is QEUV from solar EUV observations. Differences between temporal variations in F10.7 and those in QEUV are identified. Comparisons show that QEUV more accurately captures variability on day-to-day and solar rotation time scales, and during solar minimum periods than F10.7.
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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 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".