GribStream

NOAA National Blend of Models - Guam

Codice GribStream: nbmgu

Altre griglie NBM: nbm, nbmak, nbmhi, nbmpr, nbmoc

Status NBM v5: NBM v5 è già operativo in questo dataset. Nell'archivio GribStream, i run precedenti a 2026-05-05 12:00 UTC contengono la versione operativa precedente di NBM; i run da 2026-05-05 12:00 UTC in poi usano NBM v5.

I campi di accumulo come APCP, ASNOW e FICEAC, quando presenti, continuano nella finestra oraria estesa di NBM v5 e poi proseguono in /timeseries con periodi di accumulo più lunghi, senza lacune o finestre duplicate.

Descrizione

NBM Guam è il prodotto regionale del National Blend of Models per Guam. Porta la post-elaborazione operativa NOAA su una griglia dedicata al dominio, invece di usare la griglia CONUS principale.

NBM combina più fonti di previsione e applica calibrazione statistica per produrre campi più consistenti di quelli di un singolo modello non calibrato. L'obiettivo è offrire una base previsionale più stabile per prodotti operativi e decisioni sensibili al rischio meteo.

Il sistema usa tecniche come Model Output Statistics (MOS), Quantile Mapping e pesatura ensemble. Nei domini regionali, questo blend mantiene un contesto locale utile senza cambiare il modo in cui si interroga l'API.

In GribStream, nbmgu preserva codici variabile, livelli e valori di info del catalogo. Puoi usare gli stessi endpoint e selettori degli altri codici NBM, cambiando solo il codice del modello.

Dettagli

Archive begins: 2020-10-01
Pagina prodotto: https://vlab.noaa.gov/web/mdl/nbm/
Caratteristiche principali:
- Estende la base operativa di NBM v5 al dominio regionale Guam.
- Pubblica cicli orari per prodotti che richiedono aggiornamenti frequenti.
- Combina modelli globali, regionali, deterministici ed ensemble in una previsione calibrata.
- Usa gli stessi schemi di richiesta GribStream del NBM CONUS, con un proprio codice dataset.
Risoluzione: Circa 2.5 km sulla griglia regionale di Guam.
Copertura temporale: Aggiornamenti orari; gli orizzonti di previsione arrivano a 264 h, circa 11 giorni, quando la fonte pubblica quei lead time.
Usi principali: Operazioni a Guam e nel Pacifico occidentale, aviazione, logistica, energia, turismo, gestione emergenze e prodotti locali di pioggia, vento e temperatura.

Dataset correlati

Parametri

Fai clic su un parametro per vedere le varianti in una tabella compatta con selettori JSON pronti da copiare. Codici, livelli e valori dei selettori restano esattamente come li espone l'API.

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":""}`

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