GribStream

NOAA National Blend of Models - Guam

Code GribStream: nbmgu

Autres grilles NBM: nbm, nbmak, nbmhi, nbmpr, nbmoc

Statut NBM v5 : NBM v5 est maintenant opérationnel dans ce dataset. Dans l'archive GribStream, les runs antérieurs à 2026-05-05 12:00 UTC contiennent la version opérationnelle précédente de NBM ; les runs à partir de 2026-05-05 12:00 UTC utilisent NBM v5.

Les champs d'accumulation comme APCP, ASNOW et FICEAC, lorsqu'ils sont présents, parcourent la plage horaire étendue de NBM v5 puis continuent dans /timeseries avec des périodes d'accumulation plus longues, sans trous ni fenêtres dupliquées.

Description

NBM Guam est la sortie régionale du National Blend of Models pour Guam. Elle applique le post-traitement opérationnel de la NOAA à une grille adaptée à ce domaine, au lieu d'utiliser la grille CONUS principale.

NBM combine plusieurs sources de prévision et les calibre statistiquement pour produire des champs plus cohérents qu'un modèle individuel non calibré. L'objectif est une base de prévision plus stable pour les produits opérationnels et les décisions où le risque météorologique compte.

Le système utilise des techniques comme Model Output Statistics (MOS), Quantile Mapping et pondération d'ensemble. Dans les domaines régionaux, le schéma API reste identique : choisissez le dataset NBM régional et utilisez les sélecteurs du catalogue comme pour les autres codes NBM.

Dans GribStream, nbmgu conserve les codes de variables, les niveaux et les valeurs info du catalogue. Vous pouvez utiliser les mêmes endpoints et schémas de sélecteur, en changeant seulement le code du modèle.

Détails

Archive begins: 2020-10-01
Page produit: https://vlab.noaa.gov/web/mdl/nbm/
Caractéristiques principales:
- Étend la base opérationnelle NBM v5 à un domaine régional hors de la grille CONUS principale.
- Publie des cycles horaires pour les produits qui ont besoin de mises à jour fréquentes.
- Combine modèles globaux, régionaux, déterministes et modèles d'ensemble dans une sortie calibrée.
- Utilise les mêmes schémas de requête GribStream que NBM CONUS, avec son propre code de dataset.
Résolution: Environ 2.5 km sur la grille régionale de Guam.
Couverture temporelle: Mises à jour horaires ; les horizons de prévision vont jusqu'à 264 h, environ 11 jours, lorsque la source publie ces Lead Times.
Usages principaux: Opérations à Guam et dans le Pacifique occidental, aviation, logistique, énergie, tourisme, gestion d'urgence et produits locaux liés à la pluie, au vent et à la température.

Datasets liés

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.

APCP –Accumulated Precipitation (kg/m^2)

2 variants

Accumulated precipitation represents the total water-equivalent amount of rain and snow during the output period. It is a primary field for hydrologic impacts and event totals.

Units: kg/m^2.
Use with the model time interval to interpret totals and compare to gauges.

Level	Info	Horizon	Introduced	Selector
`surface`		1h-264h	2020-10-01	`{"name":"APCP","level":"surface","info":""}`
`surface`	`prob >0.254`	1h-264h	2020-10-01	`{"name":"APCP","level":"surface","info":"prob >0.254"}`

CAPE –Convective Available Potential Energy (J/kg)

2 variants

Convective Available Potential Energy (CAPE) quantifies buoyant energy available to rising air parcels. Larger values generally imply stronger potential updrafts and greater convective intensity.

Units: J/kg.
Often used with CIN and lifting mechanisms to assess thunderstorm potential.

Level	Info	Horizon	Introduced	Selector
`surface`		1h-264h	2020-10-01	`{"name":"CAPE","level":"surface","info":""}`
`surface`	`ens std dev`	1h-264h	2020-10-01	`{"name":"CAPE","level":"surface","info":"ens std dev"}`

CEIL –Ceiling Height (m)

2 variants

Ceiling height is the altitude of the lowest cloud base that covers a significant portion of the sky. It is a key aviation and surface-visibility metric.

Units: m.

Level	Info	Horizon	Introduced	Selector
`cloud base`		1h-84h	2020-10-01	`{"name":"CEIL","level":"cloud base","info":""}`
`cloud ceiling`		1h-48h	2020-10-01	`{"name":"CEIL","level":"cloud ceiling","info":""}`

DPT –Dew Point Temperature (K)

2 variants

Dew point temperature is the temperature at which the air becomes saturated. It is a direct measure of moisture content.

Units: K.
When dew point is close to air temperature, fog or low cloud potential increases.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		1h-264h	2020-10-01	`{"name":"DPT","level":"2 m above ground","info":""}`
`2 m above ground`	`ens std dev`	1h-264h	2020-10-01	`{"name":"DPT","level":"2 m above ground","info":"ens std dev"}`

GUST –Wind Speed (Gust) (m/s)

2 variants

Wind gust is the peak short-duration wind speed. It captures brief, hazardous bursts that can exceed sustained winds.

Units: m/s.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		1h-264h	2020-10-01	`{"name":"GUST","level":"10 m above ground","info":""}`
`10 m above ground`	`ens std dev`	1h-264h	2020-10-01	`{"name":"GUST","level":"10 m above ground","info":"ens std dev"}`

HTSGW –Significant Wave Height (m)

5 variants

Significant wave height represents the average height of the highest third of waves. It is the standard metric for sea state and marine hazards.

Units: m.

Level	Info	Horizon	Introduced	Selector
`surface`		1h-240h	2020-10-01	`{"name":"HTSGW","level":"surface","info":""}`
`surface`	`10% level`	1h-240h	2023-01-16	`{"name":"HTSGW","level":"surface","info":"10% level"}`
`surface`	`50% level`	1h-240h	2023-01-16	`{"name":"HTSGW","level":"surface","info":"50% level"}`
`surface`	`90% level`	1h-240h	2023-01-16	`{"name":"HTSGW","level":"surface","info":"90% level"}`
`surface`	`ens std dev`	1h-240h	2020-10-01	`{"name":"HTSGW","level":"surface","info":"ens std dev"}`

MAXREF –Hourly Maximum of Simulated Reflectivity at 1 km AGL (dBZ)

1 variant

Hourly maximum simulated reflectivity at 1 km AGL captures the strongest modeled reflectivity near the surface. It is used to identify peak convective intensity and heavy precipitation cores.

Units: dBZ.

Level	Info	Horizon	Introduced	Selector
`1000 m above ground`		1h-48h	2020-10-01	`{"name":"MAXREF","level":"1000 m above ground","info":""}`

MAXRH –Maximum Relative Humidity (percent)

1 variant

Maximum relative humidity is the highest RH reached during the period. It can indicate peak cloud or fog potential.

Units: percent.
Higher values indicate more atmospheric moisture and greater cloud or precip potential.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		18h-264h	2020-10-01	`{"name":"MAXRH","level":"2 m above ground","info":""}`

MINRH –Minimum Relative Humidity (percent)

1 variant

Minimum relative humidity is the lowest RH reached during the period. It is used in fire‑weather and drying assessments.

Units: percent.
Higher values indicate more atmospheric moisture and greater cloud or precip potential.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		18h-264h	2020-10-01	`{"name":"MINRH","level":"2 m above ground","info":""}`

RETOP –Radar Echo Top Height (m)

1 variant

Echo top height is the altitude of the highest reflectivity in the column. It is a proxy for storm depth and convective vigor.

Units: m.

Level	Info	Horizon	Introduced	Selector
`cloud top`		1h-48h	2020-10-01	`{"name":"RETOP","level":"cloud top","info":""}`

RH –Relative Humidity (percent)

1 variant

Relative humidity describes how close the air is to saturation at the specified level. High values favor cloud formation.

Units: percent.
Higher values indicate more atmospheric moisture and greater cloud or precip potential.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		1h-264h	2020-10-01	`{"name":"RH","level":"2 m above ground","info":""}`

TCDC –Total Cloud Cover (percent)

3 variants

Total cloud cover is the fraction of the grid cell covered by clouds at any level. It influences radiation, temperature, and visibility.

Units: percent.
Cloud fraction influences surface radiation and temperature.

Level	Info	Horizon	Introduced	Selector
`surface`		1h-264h	2020-10-01	`{"name":"TCDC","level":"surface","info":""}`
`surface`	`ens std dev`	1h-48h	2020-10-01	`{"name":"TCDC","level":"surface","info":"ens std dev"}`
`surface`	`unknown derived fcst`	37h-264h	2020-10-01	`{"name":"TCDC","level":"surface","info":"unknown derived fcst"}`

TMAX –Maximum Temperature (K)

1 variant

Maximum temperature is the highest temperature reached during the output period. It is commonly used for heat stress and daily extremes.

Units: K.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		18h-264h	2020-10-01	`{"name":"TMAX","level":"2 m above ground","info":""}`

TMIN –Minimum Temperature (K)

1 variant

Minimum temperature is the lowest temperature reached during the output period. It is commonly used for frost and cold-stress assessment.

Units: K.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		18h-264h	2020-10-01	`{"name":"TMIN","level":"2 m above ground","info":""}`

TMP –Temperature (K)

2 variants

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
`2 m above ground`		1h-264h	2020-10-01	`{"name":"TMP","level":"2 m above ground","info":""}`
`2 m above ground`	`ens std dev`	1h-264h	2020-10-01	`{"name":"TMP","level":"2 m above ground","info":"ens std dev"}`

TPWDIR –Total Precipitable Water Transport Direction (degrees)

1 variant

Total precipitable water transport direction is the direction of column‑integrated moisture flux. It indicates moisture transport pathways.

Units: degrees.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		1h-167h	2024-04-16	`{"name":"TPWDIR","level":"10 m above ground","info":""}`

TPWSPD –Total Precipitable Water Transport Speed (m/s)

1 variant

Total precipitable water transport speed is the magnitude of column‑integrated moisture transport. It highlights atmospheric river strength.

Units: m/s.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		1h-167h	2024-04-16	`{"name":"TPWSPD","level":"10 m above ground","info":""}`

VIL –Vertically-Integrated Liquid Water (kg/m^2)

1 variant

Vertically‑integrated liquid water is the total column liquid water content. It is used as a proxy for precipitation intensity and hail potential.

Units: kg/m^2.

Level	Info	Horizon	Introduced	Selector
`entire atmosphere`		1h-48h	2020-10-01	`{"name":"VIL","level":"entire atmosphere","info":""}`

VIS –Visibility (m)

1 variant

Horizontal visibility at the surface. Lower values indicate reduced visibility due to fog, precipitation, or aerosols.

Units: m.

Level	Info	Horizon	Introduced	Selector
`surface`		1h-84h	2020-10-01	`{"name":"VIS","level":"surface","info":""}`

WDIR –Wind Direction (degrees)

3 variants

Wind direction indicates the direction from which the wind is blowing at the specified level.

Units: degrees.

Level	Horizon	Introduced	Selector
`10 m above ground`	1h-264h	2020-10-01	`{"name":"WDIR","level":"10 m above ground","info":""}`
`30 m above ground`	1h-264h	2020-10-01	`{"name":"WDIR","level":"30 m above ground","info":""}`
`80 m above ground`	1h-264h	2020-10-01	`{"name":"WDIR","level":"80 m above ground","info":""}`

WIND –Wind Speed (m/s)

4 variants

Wind speed is the magnitude of the horizontal wind at the specified level. It is used for transport, mixing, and hazards.

Units: m/s.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		1h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":""}`
`10 m above ground`	`ens std dev`	1h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":"ens std dev"}`
`30 m above ground`		1h-264h	2020-10-01	`{"name":"WIND","level":"30 m above ground","info":""}`
`80 m above ground`		1h-264h	2020-10-01	`{"name":"WIND","level":"80 m above ground","info":""}`

Aucun paramètre ne correspond à la recherche.