{type:"paragraph",text:"PolyWeather's multi-model layer uses the Open-Meteo model API to integrate open NWP and AI forecasts. It does not download raw GRIB directly; instead, available models are normalized into the daily-high model stack used by spread, probabilities, and DEB."},
{type:"bullets",items:["ECMWF IFS: global traditional NWP.","ECMWF AIFS: ECMWF AI forecast, kept as a separate AI path.","DWD ICON: global ICON baseline.","DWD ICON-EU: European regional high-resolution layer.","DWD ICON-D2: European short-range high-resolution layer.","ECCC GEM / GDPS: Canadian global model family.","ECCC RDPS / HRDPS: North American regional and short-range high-resolution layers.","GFS / JMA: retained as global reference models."]},
{type:"paragraph",text:"PolyWeather's multi-model layer uses the Open-Meteo model API to integrate open NWP and AIFS model forecasts. It does not download raw GRIB directly; instead, available models are normalized into the daily-high model stack used by spread, probabilities, and DEB."},
{type:"bullets",items:["ECMWF IFS: global traditional NWP.","ECMWF AIFS: ECMWF AIFS model, kept as a separate AIFS path.","DWD ICON: global ICON baseline.","DWD ICON-EU: European regional high-resolution layer.","DWD ICON-D2: European short-range high-resolution layer.","ECCC GEM / GDPS: Canadian global model family.","ECCC RDPS / HRDPS: North American regional and short-range high-resolution layers.","GFS / JMA: retained as global reference models."]},
{type:"paragraph",text:"DEB does not treat every new model as one independent vote. Otherwise ICON / ICON-EU / ICON-D2 would over-amplify the DWD family, and GEM / GDPS / RDPS / HRDPS would over-amplify the Canadian family."},
{type:"bullets",items:["ICON / ICON-EU / ICON-D2 are collapsed into one DWD ICON family, with priority ICON-D2 > ICON-EU > ICON.","GEM / GDPS / RDPS / HRDPS are collapsed into one ECCC GEM family, with priority HRDPS > RDPS > GDPS > GEM.","ECMWF IFS and ECMWF AIFS are kept separate because one is traditional NWP and the other is an AI forecast.","GFS, JMA, MGM, NWS, LGBM, and Open-Meteo remain independent paths.","When the DEB weight string includes “family deduplication” or “家族去重”, the system has collapsed same-family models before applying historical inverse-MAE weighting."]},
{type:"bullets",items:["ICON / ICON-EU / ICON-D2 are collapsed into one DWD ICON family, with priority ICON-D2 > ICON-EU > ICON.","GEM / GDPS / RDPS / HRDPS are collapsed into one ECCC GEM family, with priority HRDPS > RDPS > GDPS > GEM.","ECMWF IFS and ECMWF AIFS are kept separate because one is traditional NWP and the other is the AIFS model.","GFS, JMA, MGM, NWS, LGBM, and Open-Meteo remain independent paths.","When the DEB weight string includes “family deduplication” or “家族去重”, the system has collapsed same-family models before applying historical inverse-MAE weighting."]},
{type:"callout",tone:"info",title:"Product meaning",text:"The new models improve regional representativeness and explanation quality. They do not let a region gain extra weight simply because more related model variants exist there."},
{type:"paragraph",text:"The Model Range & Spread panel groups the model stack into Global Baseline, AI Forecast, Europe High-resolution, and North America High-resolution. It shows available model count, spread, source, model name, resolution, and forecast horizon. Regional models outside their domain are simply not shown."},
{type:"paragraph",text:"The Model Range & Spread panel groups the model stack into Global Baseline, AIFS Model, Europe High-resolution, and North America High-resolution. It shows available model count, spread, source, model name, resolution, and forecast horizon. Regional models outside their domain are simply not shown."},
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