GribStream

GraphCast Global Forecast System (GFS GraphCast)

Code GribStream: graphcast

Statut : GribStream expose graphcast comme archive expérimentale historique. La couverture GraphCastGFS dans GribStream va jusqu'au run 2026-05-05 00:00 UTC. Le NOAA EAGLE Registry décrit AIGFS et AIGEFS comme remplaçants opérationnels de la famille EAGLE SOLO/Ensemble ; utilisez donc AIGFS ou AIGEFS pour la prévision globale NOAA actuelle basée sur l'IA.

Description

GraphCast Global Forecast System est une prévision globale expérimentale NOAA/NCEP construite sur le modèle de machine learning GraphCast de Google DeepMind. Dans GribStream, elle reste disponible comme archive historique pour comparaison, recherche et backtesting.

Le modèle central est un réseau neuronal de graphes avec message passing (passage de messages) et une architecture encoder-processor-decoder. Il a été préentraîné avec ERA5 et, dans la version publiée par NOAA, utilise deux états d'analyse GDAS en entrée : le temps courant et l'état 6 h plus tôt.

La configuration disponible se concentre sur une grille à 13 niveaux de pression et inclut température, composantes du vent, hauteur géopotentielle, humidité spécifique, vitesse verticale et variables de surface standard.

La couverture historique de graphcast va jusqu'au run 2026-05-05 00:00 UTC. Pour des cycles globaux actuels basés sur l'IA, utilisez AIGFS ou AIGEFS chez NOAA, ou AIFS chez ECMWF.

GraphCast est lié à GFS par ses conditions initiales GDAS et se compare naturellement à d'autres modèles globaux basés sur l'IA, comme AIGFS et AIFS. Il ne remplace pas la prévision numérique physique ; utilisez-le avec des modèles physiques pour validation historique, backtesting et évaluation du risque.

Détails

Datasets liés

Paramètres

Rechercher des paramètres
0 paramètres

Cliquez sur un paramètre pour voir ses variantes dans une table compacte avec des sélecteurs JSON prêts à copier. Les codes, niveaux et valeurs de sélecteur restent exactement tels que l'API les expose.

HGT –Geopotential Height (gpm)
13 variants

Geopotential Height (gpm).

Level Info Horizon Introduced Selector
100 mb 0h-384h 2024-04-25
{"name":"HGT","level":"100 mb","info":""}
1000 mb 0h-384h 2024-04-25
{"name":"HGT","level":"1000 mb","info":""}
150 mb 0h-384h 2024-04-25
{"name":"HGT","level":"150 mb","info":""}
200 mb 0h-384h 2024-04-25
{"name":"HGT","level":"200 mb","info":""}
250 mb 0h-384h 2024-04-25
{"name":"HGT","level":"250 mb","info":""}
300 mb 0h-384h 2024-04-25
{"name":"HGT","level":"300 mb","info":""}
400 mb 0h-384h 2024-04-25
{"name":"HGT","level":"400 mb","info":""}
50 mb 0h-384h 2024-04-25
{"name":"HGT","level":"50 mb","info":""}
500 mb 0h-384h 2024-04-25
{"name":"HGT","level":"500 mb","info":""}
600 mb 0h-384h 2024-04-25
{"name":"HGT","level":"600 mb","info":""}
700 mb 0h-384h 2024-04-25
{"name":"HGT","level":"700 mb","info":""}
850 mb 0h-384h 2024-04-25
{"name":"HGT","level":"850 mb","info":""}
925 mb 0h-384h 2024-04-25
{"name":"HGT","level":"925 mb","info":""}
PRMSL –Mean Sea-Level Pressure (Pa)
1 variant

Mean Sea-Level Pressure (Pa).

Level Info Horizon Introduced Selector
mean sea level 0h-384h 2024-04-25
{"name":"PRMSL","level":"mean sea level","info":""}
SPFH –Specific Humidity (kg/kg)
13 variants

Specific Humidity (kg/kg).

Level Info Horizon Introduced Selector
100 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"100 mb","info":""}
1000 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"1000 mb","info":""}
150 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"150 mb","info":""}
200 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"200 mb","info":""}
250 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"250 mb","info":""}
300 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"300 mb","info":""}
400 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"400 mb","info":""}
50 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"50 mb","info":""}
500 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"500 mb","info":""}
600 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"600 mb","info":""}
700 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"700 mb","info":""}
850 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"850 mb","info":""}
925 mb 0h-384h 2024-04-25
{"name":"SPFH","level":"925 mb","info":""}
TMP –Temperature (K)
14 variants

Temperature (K).

Level Info Horizon Introduced Selector
100 mb 0h-384h 2024-04-25
{"name":"TMP","level":"100 mb","info":""}
1000 mb 0h-384h 2024-04-25
{"name":"TMP","level":"1000 mb","info":""}
150 mb 0h-384h 2024-04-25
{"name":"TMP","level":"150 mb","info":""}
2 m above ground 0h-384h 2024-04-25
{"name":"TMP","level":"2 m above ground","info":""}
200 mb 0h-384h 2024-04-25
{"name":"TMP","level":"200 mb","info":""}
250 mb 0h-384h 2024-04-25
{"name":"TMP","level":"250 mb","info":""}
300 mb 0h-384h 2024-04-25
{"name":"TMP","level":"300 mb","info":""}
400 mb 0h-384h 2024-04-25
{"name":"TMP","level":"400 mb","info":""}
50 mb 0h-384h 2024-04-25
{"name":"TMP","level":"50 mb","info":""}
500 mb 0h-384h 2024-04-25
{"name":"TMP","level":"500 mb","info":""}
600 mb 0h-384h 2024-04-25
{"name":"TMP","level":"600 mb","info":""}
700 mb 0h-384h 2024-04-25
{"name":"TMP","level":"700 mb","info":""}
850 mb 0h-384h 2024-04-25
{"name":"TMP","level":"850 mb","info":""}
925 mb 0h-384h 2024-04-25
{"name":"TMP","level":"925 mb","info":""}
UGRD –U-Component of Wind (m/s)
14 variants

U-Component of Wind (m/s).

Level Info Horizon Introduced Selector
10 m above ground 0h-384h 2024-04-25
{"name":"UGRD","level":"10 m above ground","info":""}
100 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"100 mb","info":""}
1000 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"1000 mb","info":""}
150 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"150 mb","info":""}
200 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"200 mb","info":""}
250 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"250 mb","info":""}
300 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"300 mb","info":""}
400 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"400 mb","info":""}
50 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"50 mb","info":""}
500 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"500 mb","info":""}
600 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"600 mb","info":""}
700 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"700 mb","info":""}
850 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"850 mb","info":""}
925 mb 0h-384h 2024-04-25
{"name":"UGRD","level":"925 mb","info":""}
VGRD –V-Component of Wind (m/s)
14 variants

V-Component of Wind (m/s).

Level Info Horizon Introduced Selector
10 m above ground 0h-384h 2024-04-25
{"name":"VGRD","level":"10 m above ground","info":""}
100 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"100 mb","info":""}
1000 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"1000 mb","info":""}
150 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"150 mb","info":""}
200 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"200 mb","info":""}
250 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"250 mb","info":""}
300 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"300 mb","info":""}
400 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"400 mb","info":""}
50 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"50 mb","info":""}
500 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"500 mb","info":""}
600 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"600 mb","info":""}
700 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"700 mb","info":""}
850 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"850 mb","info":""}
925 mb 0h-384h 2024-04-25
{"name":"VGRD","level":"925 mb","info":""}
VVEL –Vertical Velocity (Pressure) (Pa/s)
13 variants

Vertical Velocity (Pressure) (Pa/s).

Level Info Horizon Introduced Selector
100 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"100 mb","info":""}
1000 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"1000 mb","info":""}
150 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"150 mb","info":""}
200 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"200 mb","info":""}
250 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"250 mb","info":""}
300 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"300 mb","info":""}
400 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"400 mb","info":""}
50 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"50 mb","info":""}
500 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"500 mb","info":""}
600 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"600 mb","info":""}
700 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"700 mb","info":""}
850 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"850 mb","info":""}
925 mb 0h-384h 2024-04-25
{"name":"VVEL","level":"925 mb","info":""}

Aucun paramètre ne correspond à la recherche.