Investigating summer thermal stratification in Lake Ontario
Why this work is in the frame
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Bibliographic record
Abstract
Summer thermal stratification in Lake Ontario is simulated using the 3D \nhydrodynamic model Environmental Fluid Dynamics Code (EFDC). Summer temperature \ndifferences establish strong vertical density gradients (thermocline) between the epilimnion \nand hypolimnion. Capturing the stratification and thermocline formation has been a \nchallenge in modeling Great Lakes. Deviating from EFDC's original Mellor-Yamada (1982) \nvertical mixing scheme, we have implemented an unidimensional vertical model that uses \ndifferent eddy diffusivity formulations above and below the thermocline (Vincon-Leite, \n1991; Vincon-Leite et al., 2014). The model is forced with the hourly meteorological data \nfrom weather stations around the lake, flow data for Niagara and St. Lawrence rivers; and \nlake bathymetry is interpolated on a 2-km grid. The model has 20 vertical layers following \nsigma vertical coordinates. Sensitivity of the model to vertical layers' spacing is thoroughly \ninvestigated. The model has been calibrated for appropriate solar radiation coefficients and \nhorizontal mixing coefficients. Overall the new implemented diffusivity algorithm shows \nsome successes in capturing the thermal stratification with RMSE values between 2-3°C. \nCalibration of vertical mixing coefficients is under investigation to capture the improved \nthermal stratification.
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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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 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 it