Local and regional albedo observations of arctic first‐year sea ice during melt ponding
Bibliographic record
Abstract
The shortwave surface albedo is a critical climatological parameter for sea ice, especially during the spring melt period when the ice contains a mixture of highly reflective (snow) and absorptive (melt ponds) surfaces. Broadband and spectral albedo measurements were made over numerous surface types on first‐year sea ice during the melt period in Wellington Channel, Nunavut during the Collaborative‐Interdisciplinary Cryospheric Experiment 1997. Albedo measurements ranged from 0.75 (moist snow) to 0.21 (dark melt ponds) with many unique intermediate surfaces. Aircraft videography collected throughout Wellington Channel and Lancaster Sound was processed to reveal four main surface cover types (wet snow, mixed type, light ponds, and dark ponds). Surface albedo data were applied to the aircraft observations to upscale surface albedo measurements to regional scales. Aircraft video‐derived regional albedo (mean = 0.55±0.02) were comparable to helicopter and satellite‐derived (Advanced Very High Resolution Radiometer) albedo estimates.
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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 | 0.001 | 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 | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".