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Record W2092436331 · doi:10.1029/2001ja000241

Auroral records from Canada 1769–1821

2002· article· en· W2092436331 on OpenAlexaboutno aff
Peter Broughton

Bibliographic record

VenueJournal of Geophysical Research Atmospheres · 2002
Typearticle
Languageen
FieldPhysics and Astronomy
TopicSolar and Space Plasma Dynamics
Canadian institutionsnot available
Fundersnot available
KeywordsLatitudeSolar minimumSunspotGeomagnetic latitudeSolar maximumEarth's magnetic fieldSunspot numberHigh latitudeAtmospheric sciencesEnvironmental scienceMeteorologySolar cycleClimatologyGeographyGeologyPhysicsGeodesySolar windPlasma

Abstract

fetched live from OpenAlex

Over 1000 previously unused Canadian auroral observations from manuscript sources between 1771 and 1819 are examined. They are especially reliable because they are part of meteorological registers which simultaneously contain information on cloudiness and are significant because they add substantially to the scarce database of historical records, especially from high geomagnetic latitudes (57° < Φ 1800 < 70°). The statistics derived from these data show an interval of low auroral activity from about 1785 to 1815, a decade earlier than the Dalton solar activity minimum, superimposed on a fairly regular periodicity of about 11 years and seasonal variations. The relationship between the auroral occurrence frequency and solar activity from 1795 to 1815 is similar to what is normally seen at lower latitudes suggesting that the auroral oval contracted more than usual during the Dalton minimum. The data support the type of relationship found by Ohl, which directly relates the frequency of auroral occurrence at high latitudes during the declining portion of one solar cycle to the sunspot number at the following maximum and the rapidity with which the solar activity returns to a maximum.

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 categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.501
Threshold uncertainty score0.997

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 integrity0.0000.001
Insufficient payload (model declined to judge)0.0030.000

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 head0.027
GPT teacher head0.286
Teacher spread0.260 · 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 designObservational
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

Citations14
Published2002
Admission routes1
Has abstractyes

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