@prefix this: <https://w3id.org/sciencelive/np/RAK2ynlqgA3L_YVbEo-cVoXZ7T63q4eCFZqf9CPWWNc40> .
@prefix sub: <https://w3id.org/sciencelive/np/RAK2ynlqgA3L_YVbEo-cVoXZ7T63q4eCFZqf9CPWWNc40/> .
@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#> .

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sub:assertion {
  sub:delouis-2022-sst-replication-outcome a <https://w3id.org/sciencelive/o/terms/FORRT-Replication-Outcome>;
    <http://schema.org/endDate> "2026-04-22"^^xsd:date;
    <http://www.w3.org/2000/01/rdf-schema#label> "Scattering-transform gap-filling of Copernicus L3S SST achieves 0.989 K RMSE against the L4 reference";
    <https://w3id.org/sciencelive/o/terms/hasConclusionDescription> "The replication supports Delouis et al. 2022's generalisation claim across domain boundaries. Using the authors' own FOSCAT software (specifically following Jean-Marc Delouis's IGARSS 2024 Pangeo tutorial workflow), scattering-transform synthesis fills cloud gaps in Copernicus Marine sea surface temperature observations to within 1 K of an operational gap-free analysis product, and outperforms a  standard spherical-harmonic interpolation baseline by approximately an order of magnitude. The framework's applicability to oceanographic  Earth observation is therefore concretely demonstrated, not only argued.";
    <https://w3id.org/sciencelive/o/terms/hasConfidenceLevel> <https://w3id.org/sciencelive/o/terms/HighConfidence>;
    <https://w3id.org/sciencelive/o/terms/hasEvidenceDescription> "Single-day experiment on Copernicus Marine SST for 2026-04-01. Inputs: L3S PMW (cmems_obs-sst_glo_phy_l3s_pmw_P1D-m) with cloud gaps, L4 analysis (cmems_obs-sst_glo_phy-temp_nrt_P1D-m) as gap-free reference, both at 0.25° native resolution and downgraded to HEALPix nside=32 (12,288 cells). FOSCAT scattering synthesis: NORIENT=4, KERNELSZ=3, 300 L-BFGS iterations, ~139 seconds on CPU (Apple M1 Pro). Validation against L4 in cloudy regions only:\\n\\n- Spherical-harmonic baseline RMSE: 11.46 K\\n- FOSCAT RMSE: 0.989 K\\n- Improvement: 91.4%\\n\\nFull results JSON archived at Zenodo 10.5281/zenodo.19686691.";
    <https://w3id.org/sciencelive/o/terms/hasLimitationsDescription> "Three caveats limit the strength of the conclusion: (1) Single-date evaluation. Only one day (2026-04-01) of L3S/L4 SST was tested; cloud distribution, ocean regimes, and the gap pattern vary across days and seasons, so a multi-day study would strengthen the result. (2) Lower-than-paper resolution. nside=32 (~6° angular resolution) was used for CPU runtime; the original paper operates at nside=256, and the WGS84 follow-up study (fiesta-scattering-sst-healpix-geo) shows the framework's behaviour can change at higher resolution. (3) L4 as  ground truth. The 0.989 K RMSE is computed against the L4 operational analysis product, not against in-situ measurements; L4 itself is an interpolation of observations and may have systematic biases that propagate into the apparent 'truth'.";
    <https://w3id.org/sciencelive/o/terms/hasOutcomeRepository> <https://doi.org/10.5281/zenodo.19707888>;
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}

sub:provenance {
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sub:pubinfo {
  <https://orcid.org/0000-0002-1784-2920> <http://xmlns.com/foaf/0.1/name> "Anne Fouilloux" .
  
  this: dc:created "2026-04-26T17:49:33.886Z"^^xsd:dateTime;
    dc:creator <https://orcid.org/0000-0002-1784-2920>;
    dc:license <https://creativecommons.org/licenses/by/4.0/>;
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