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Record W4297002490 · doi:10.5194/iahs2022-291

Toward a unified stochastic framework for projection and prediction of streamflow under changing conditions 

2022· preprint· en· W4297002490 on OpenAlexaff
Ali Nazemi, Masoud Zaerpour

Bibliographic record

Venuenot available
Typepreprint
Languageen
FieldEnvironmental Science
TopicHydrology and Watershed Management Studies
Canadian institutionsConcordia University
Fundersnot available
KeywordsStreamflowEnvironmental scienceFutures contractRange (aeronautics)Climate changeClimatologySeries (stratigraphy)Computer scienceEconometricsMathematicsDrainage basinGeographyEconomicsGeology

Abstract

fetched live from OpenAlex

Stochastic methods for synthetic streamflow simulations have traditionally supported operational management and planning of surface water systems in both short- and long-term futures. Here we focus on a particular strain of stochastic streamflow generators that use copulas, a generic statistical framework for formulating interdependencies, to resample streamflow series at single and multiple sites. Such stochastic simulators are based on a series of conditional probabilities that are inferred from joint probabilities between streamflow series in time and space. We discuss the core algorithm behind such stochastic samplers and provide a set of practical guidelines across a range of timescales, flow regimes and catchment characteristics on when and how these schemes should and can be developed. We then provide a generalized framework for altering the parameters of these samplers so that streamflow series can be generated under changing conditions, whether such changes are initiated by climate or human interventions. By informing these samplers with weather and climate indices, we show how the quality of streamflow projections can be significantly improved across a range of temporal scales and highlight the potential of such climatic-informed streamflow samplers for short-term predictions, particularly during high flow seasons.

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)0.005
metaresearch head score (Gemma)0.008
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 score0.015
Threshold uncertainty score0.030

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0050.008
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.002
Bibliometrics0.0010.001
Science and technology studies0.0010.002
Scholarly communication0.0020.002
Open science0.0020.002
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0020.000

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 head0.048
GPT teacher head0.282
Teacher spread0.234 · 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
Published2022
Admission routes1
Has abstractyes

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