@prefix this: <https://w3id.org/sciencelive/np/RAMCIV3OiYyQl2edJEQxH6x7_b8-1JB-d8meP6o9pJU5s> .
@prefix sub: <https://w3id.org/sciencelive/np/RAMCIV3OiYyQl2edJEQxH6x7_b8-1JB-d8meP6o9pJU5s/> .
@prefix np: <http://www.nanopub.org/nschema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix npx: <http://purl.org/nanopub/x/> .
@prefix dc: <http://purl.org/dc/terms/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

sub:Head {
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    np:hasProvenance sub:provenance;
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sub:assertion {
  sub:cellprofiler-ar-tracking-study a <https://w3id.org/sciencelive/o/terms/FORRT-Replication-Study>,
      <https://w3id.org/sciencelive/o/terms/Replication-Study>;
    <http://www.w3.org/2000/01/rdf-schema#label> "Cross-discipline application of the CellProfiler tracking pipeline to atmospheric-river tracking via Galaxy";
    <http://www.w3.org/2004/02/skos/core#related> <http://www.wikidata.org/entity/Q190120>,
      <http://www.wikidata.org/entity/Q4420972>, <http://www.wikidata.org/entity/Q4817119>;
    <https://w3id.org/sciencelive/o/terms/hasDeviationDescription> "Relative to the original Galaxy microscopy tutorial, only the input domain changed: fluorescence time-lapse frames of dividing nuclei were replaced by ERA5 IVT fields of atmospheric rivers. The CellProfiler module chain and the TrackObjects Overlap method are unchanged. Domain-appropriate object criteria (the Guan & Waliser AR thresholds: IVT, length, length/width ratio, poleward flux) replace the nucleus size/intensity thresholds, since \"what counts as an object\" is necessarily domain-specific. No retraining or algorithm change was performed.";
    <https://w3id.org/sciencelive/o/terms/hasDiscipline> <http://www.wikidata.org/entity/Q757520>;
    <https://w3id.org/sciencelive/o/terms/hasMethodologyDescription> "RA5 vertically-integrated water-vapour transport (IVT) components were downloaded from ARCO-ERA5 (the analysis-ready ERA5 mirror on Google Cloud, anonymous) over the North Pacific for an early-February 2017 window at 6-hourly cadence, and the IVT magnitude was computed as the root-sum-square of the eastward and northward components. Each timestep was rendered as a single-channel frame (bright river on dark background). The frames were run through the unchanged Galaxy CellProfiler object-tracking workflow (main_workflow.ga) on usegalaxy.eu via BioBlend: IdentifyPrimaryObjects, MeasureObjectSizeShape, MeasureObjectIntensity, then TrackObjects with the Overlap method to link objects across consecutive frames. Atmospheric rivers were identified with the established Guan & Waliser (2015) / ARTMIP criteria: IVT above 250 kg m^-1 s^-1, object length above 2000 km, length/width ratio above 2, and a poleward IVT component above 50 kg m^-1 s^-1. A same-algorithm local path (scikit-image connected-component detection with the identical geometry and poleward criteria, then one-to-one maximum-overlap linking) reproduces the result without a Galaxy account for hermetic CI.";
    <https://w3id.org/sciencelive/o/terms/hasScopeDescription> "Whether the object-tracking behaviour of the CellProfiler IdentifyPrimaryObjects + TrackObjects pipeline — assigning each object a persistent identity across frames and recovering its trajectory, including objects that intensify, merge and split — holds when the input is a time-series of ERA5 IVT fields containing atmospheric rivers rather than a fluorescence time-lapse of dividing nuclei. In scope: recovery of coherent atmospheric-river objects (identity, trajectory, length, IVT intensity, poleward flux) and their tracking over consecutive 6-hourly steps for a North Pacific event. Out of scope: detection accuracy against a reference AR catalog (e.g. tARget/ARTMIP), landfall impacts, and precipitation attribution.";
    <https://w3id.org/sciencelive/o/terms/targetsClaim> <https://w3id.org/sciencelive/np/RAf0RJnRYzvA9zKc7keUMD1OA5T03-TGNDXJqKoajhAik/cellprofiler-ar-tracking-transfer> .
}

sub:provenance {
  sub:assertion prov:wasAttributedTo <https://orcid.org/0000-0002-1784-2920> .
}

sub:pubinfo {
  <https://orcid.org/0000-0002-1784-2920> <http://xmlns.com/foaf/0.1/name> "Anne Fouilloux" .
  
  this: dc:created "2026-06-23T10:16:57.217Z"^^xsd:dateTime;
    dc:creator <https://orcid.org/0000-0002-1784-2920>;
    dc:license <https://creativecommons.org/licenses/by/4.0/>;
    npx:introduces sub:cellprofiler-ar-tracking-study;
    npx:wasCreatedAt <https://platform.sciencelive4all.org>;
    <http://www.w3.org/2000/01/rdf-schema#label> "Cross-discipline application of the CellProfiler tracking pipeline to atmospheric-river tracking via Galaxy";
    <https://w3id.org/np/o/ntemplate/wasCreatedFromTemplate> <https://w3id.org/np/RAuLEjPp-4dTvPwMkfHggTto1CgjIftiGRAgHlyeEonjQ> .
  
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