GribStream

NOAA AI Global Forecast System Pressure Levels (AIGFS Pressure)

Code GribStream: aigfspres

Statut opérationnel : NOAA a mis en production AIGFS v1.0 et AIGEFS v1.0 le 17 décembre 2025, avec HGEFS. Dans GribStream, ces datasets sont la ligne opérationnelle NOAA actuelle pour la prévision globale basée sur l'IA ; graphcast reste une archive expérimentale historique.

Références techniques : NOAA EAGLE AWS Open Data Registry, produits NCEP AIGFS, distribution NOMADS, NWS SCN 25-89 et NOAA/NCEP Office Note 521.

Description

AIGFS Pressure est le produit sur niveaux de pression de l'Artificial Intelligence Global Forecast System opérationnel de la NOAA/NCEP. La NOAA a mis AIGFS v1.0 en production le 17 décembre 2025 ; cette page couvre la partie en altitude qui complète AIGFS Surface.

Le dataset garde la logique AIGFS basée sur GraphCast, initialisée depuis l'analyse globale opérationnelle NOAA. Cela permet de comparer une prévision déterministe basée sur l'IA à des modèles physiques globaux sans changer le modèle de requête GribStream.

aigfspres est l'option adaptée quand vous avez besoin de la structure de l'atmosphère au-dessus de la surface : steering flow, profils thermiques, couches d'humidité, ondes des niveaux moyens et hauts, et mouvement vertical.

Le dataset inclut vent U/V, température, hauteur géopotentielle, humidité spécifique et vitesse verticale sur 13 niveaux de pression standard : 50, 100, 150, 200, 250, 300, 400, 500, 600, 700, 850, 925 et 1000 mb. Il tourne sur grille globale de 0.25 degré, avec runs 00/06/12/18 UTC et pas de 6 h jusqu'à 384 h.

Pour les clients GribStream, AIGFS Pressure est utile pour analyse synoptique, première évaluation de trajectoires, tableaux de bord moyen terme, comparaison entre IA et modèles physiques, et produits utilisant des variables sur niveaux de pression.

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
NOAA GRIB2 Table 4.2-0-3

Geopotential height is the altitude of a pressure surface in the atmosphere. It is the primary field for identifying ridges, troughs, and large‑scale flow patterns.

  • Units: gpm.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2026-04-16
{"name":"HGT","level":"100 mb","info":""}
1000 mb 0h-384h 2026-04-16
{"name":"HGT","level":"1000 mb","info":""}
150 mb 0h-384h 2026-04-16
{"name":"HGT","level":"150 mb","info":""}
200 mb 0h-384h 2026-04-16
{"name":"HGT","level":"200 mb","info":""}
250 mb 0h-384h 2026-04-16
{"name":"HGT","level":"250 mb","info":""}
300 mb 0h-384h 2026-04-16
{"name":"HGT","level":"300 mb","info":""}
400 mb 0h-384h 2026-04-16
{"name":"HGT","level":"400 mb","info":""}
50 mb 0h-384h 2026-04-16
{"name":"HGT","level":"50 mb","info":""}
500 mb 0h-384h 2026-04-16
{"name":"HGT","level":"500 mb","info":""}
600 mb 0h-384h 2026-04-16
{"name":"HGT","level":"600 mb","info":""}
700 mb 0h-384h 2026-04-16
{"name":"HGT","level":"700 mb","info":""}
850 mb 0h-384h 2026-04-16
{"name":"HGT","level":"850 mb","info":""}
925 mb 0h-384h 2026-04-16
{"name":"HGT","level":"925 mb","info":""}
SPFH –Specific Humidity (kg/kg)
13 variants
NOAA GRIB2 Table 4.2-0-1

Specific humidity is the mass of water vapor per mass of air at the specified level. It is central to moisture transport.

  • Units: kg/kg.
  • Higher values indicate more atmospheric moisture and greater cloud or precip potential.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"100 mb","info":""}
1000 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"1000 mb","info":""}
150 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"150 mb","info":""}
200 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"200 mb","info":""}
250 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"250 mb","info":""}
300 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"300 mb","info":""}
400 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"400 mb","info":""}
50 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"50 mb","info":""}
500 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"500 mb","info":""}
600 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"600 mb","info":""}
700 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"700 mb","info":""}
850 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"850 mb","info":""}
925 mb 0h-384h 2026-04-16
{"name":"SPFH","level":"925 mb","info":""}
TMP –Temperature (K)
13 variants
NOAA GRIB2 Table 4.2-0-0

Air temperature is the thermal state of the atmosphere at the specified level. It influences density, stability, and energy exchange.

  • Units: K.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2026-04-16
{"name":"TMP","level":"100 mb","info":""}
1000 mb 0h-384h 2026-04-16
{"name":"TMP","level":"1000 mb","info":""}
150 mb 0h-384h 2026-04-16
{"name":"TMP","level":"150 mb","info":""}
200 mb 0h-384h 2026-04-16
{"name":"TMP","level":"200 mb","info":""}
250 mb 0h-384h 2026-04-16
{"name":"TMP","level":"250 mb","info":""}
300 mb 0h-384h 2026-04-16
{"name":"TMP","level":"300 mb","info":""}
400 mb 0h-384h 2026-04-16
{"name":"TMP","level":"400 mb","info":""}
50 mb 0h-384h 2026-04-16
{"name":"TMP","level":"50 mb","info":""}
500 mb 0h-384h 2026-04-16
{"name":"TMP","level":"500 mb","info":""}
600 mb 0h-384h 2026-04-16
{"name":"TMP","level":"600 mb","info":""}
700 mb 0h-384h 2026-04-16
{"name":"TMP","level":"700 mb","info":""}
850 mb 0h-384h 2026-04-16
{"name":"TMP","level":"850 mb","info":""}
925 mb 0h-384h 2026-04-16
{"name":"TMP","level":"925 mb","info":""}
UGRD –U-Component of Wind (m/s)
13 variants
NOAA GRIB2 Table 4.2-0-2

U‑component of wind is the east‑west component of the horizontal wind. Combine with v for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"100 mb","info":""}
1000 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"1000 mb","info":""}
150 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"150 mb","info":""}
200 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"200 mb","info":""}
250 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"250 mb","info":""}
300 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"300 mb","info":""}
400 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"400 mb","info":""}
50 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"50 mb","info":""}
500 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"500 mb","info":""}
600 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"600 mb","info":""}
700 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"700 mb","info":""}
850 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"850 mb","info":""}
925 mb 0h-384h 2026-04-16
{"name":"UGRD","level":"925 mb","info":""}
VGRD –V-Component of Wind (m/s)
13 variants
NOAA GRIB2 Table 4.2-0-2

V‑component of wind is the north‑south component of the horizontal wind. Combine with u for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"100 mb","info":""}
1000 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"1000 mb","info":""}
150 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"150 mb","info":""}
200 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"200 mb","info":""}
250 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"250 mb","info":""}
300 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"300 mb","info":""}
400 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"400 mb","info":""}
50 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"50 mb","info":""}
500 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"500 mb","info":""}
600 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"600 mb","info":""}
700 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"700 mb","info":""}
850 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"850 mb","info":""}
925 mb 0h-384h 2026-04-16
{"name":"VGRD","level":"925 mb","info":""}
VVEL –Vertical Velocity (Pressure) (Pa/s)
13 variants
NOAA GRIB2 Table 4.2-0-2

Vertical velocity in pressure coordinates (omega). Negative values indicate upward motion (rising air); positive values indicate subsidence.

  • Units: Pa/s.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"100 mb","info":""}
1000 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"1000 mb","info":""}
150 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"150 mb","info":""}
200 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"200 mb","info":""}
250 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"250 mb","info":""}
300 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"300 mb","info":""}
400 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"400 mb","info":""}
50 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"50 mb","info":""}
500 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"500 mb","info":""}
600 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"600 mb","info":""}
700 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"700 mb","info":""}
850 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"850 mb","info":""}
925 mb 0h-384h 2026-04-16
{"name":"VVEL","level":"925 mb","info":""}

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