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Record W4362475765 · doi:10.24908/iqurcp16254

Parameterization of Turbulent Diffusivity using Gradient Descent

2023· article· en· W4362475765 on OpenAlexaffvenue
Thomas Pendergast

Bibliographic record

VenueInquiry Queen s Undergraduate Research Conference Proceedings · 2023
Typearticle
Languageen
FieldEnvironmental Science
TopicClimate variability and models
Canadian institutionsQueen's University
Fundersnot available
KeywordsMixing (physics)TurbulenceTurbulent diffusionDiffusionParameterized complexityThermal diffusivityMechanicsDouble diffusionStatistical physicsComputer scienceDiffusion processProcess (computing)Scale (ratio)Function (biology)PhysicsAlgorithmThermodynamics

Abstract

fetched live from OpenAlex

Fluid mixing and turbulent processes such as double diffusion are chaotic by nature and can be very difficult to parameterize. Experts have called for further investigation into parameterizing double diffusion and other vertical mixing processes for the implication that it may have on large-scale ocean and climate models. Interference from lateral flows and lateral mixing can often make field-data-driven parameterizations difficult and isolated experiments may have much more accurate results. By conducting isolated experiments which target a specific process, we can better quantify the effect that the individual process has. Using a variational method, the turbulent diffusivity associated with double diffusion can be parameterized by minimizing a cost function comparing a basic diffusion model to laboratory data.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.005
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.013
Threshold uncertainty score0.026

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.005
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.000
Science and technology studies0.0000.001
Scholarly communication0.0010.001
Open science0.0010.001
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0020.001

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.

Opus teacher head0.178
GPT teacher head0.374
Teacher spread0.196 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2023
Admission routes2
Has abstractyes

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