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Record W1825708147 · doi:10.1029/2002gb001976

Numerical modeling: A complementary tool for studying CO<sub>2</sub> emissions from hydroelectric reservoirs

2002· article· en· W1825708147 on OpenAlexaffabout
Nathalie Barrette, René Laprise

Bibliographic record

VenueGlobal Biogeochemical Cycles · 2002
Typearticle
Languageen
FieldEnvironmental Science
TopicAtmospheric and Environmental Gas Dynamics
Canadian institutionsUniversité du Québec à MontréalUniversité Laval
Fundersnot available
KeywordsHydroelectricityEnvironmental scienceSampling (signal processing)Surface waterHydrology (agriculture)GeologyEnvironmental engineeringEcologyGeotechnical engineering

Abstract

fetched live from OpenAlex

In 1993, a vast study began on the production and emission of CO 2 from hydroelectric reservoirs in central northern Québec. During the sampling field trips, information was collected about water temperature profiles, CO 2 surface atmospheric concentrations, dissolved CO 2 concentration profiles through the depth of the reservoirs, and CO 2 fluxes at the surface and the bottom of the reservoirs, as well as many surface meteorological parameters. One of the goals of the project was to develop a mathematical model capable of simulating the physical processes responsible for the vertical transport of dissolved CO 2 in hydroelectric reservoirs. This combined approach of measurements and numerical modeling confirmed certain hypotheses concerning the missing source of CO 2 , the existence of a spring peak of CO 2 emission and an intense fall peak of CO 2 emission for deep reservoirs. Moreover, a relation between differences in patterns of CO 2 emission and reservoir depth was highlighted. It is shown that the numerical model developed in this research can be used to develop sampling strategies based on the characteristics of temporal and spatial distributions associated with each reservoir.

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 distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.855
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.021
GPT teacher head0.239
Teacher spread0.218 · 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 teacher head, not a consensus.

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

Citations2
Published2002
Admission routes2
Has abstractyes

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