GribStream

NOAA National Blend of Models - Oceanic

Código GribStream: nbmoc

NBM 2 meter temperature across its complete oceanic product grid with black boundaries — NBM 2 m temperature across the complete populated footprint at the 10 km spacing used by the oceanic product family, with black boundaries. This coverage reference was generated from nbm for the nbmoc page; available variables may differ.

Otras grillas NBM: nbm, nbmak, nbmhi, nbmpr, nbmgu

Estado de NBM v5: NBM v5 ya está operativo en este dataset. En el archivo de GribStream, las ejecuciones anteriores a 2026-05-05 12:00 UTC contienen la versión operativa anterior de NBM; las ejecuciones desde 2026-05-05 12:00 UTC en adelante usan NBM v5.

Los campos de acumulación como APCP, ASNOW y FICEAC, cuando están presentes, continúan a través del rango horario ampliado de NBM v5 y luego siguen con períodos de acumulación más largos en /timeseries, sin huecos ni ventanas duplicadas.

Descripción

NBM Oceanic es la salida regional del National Blend of Models para la zona oceánica. Lleva el postprocesamiento operativo de NOAA a una grilla enfocada en esa zona, en vez de usar la grilla CONUS principal.

NBM combina múltiples fuentes de pronóstico y aplica calibración estadística para producir campos más consistentes que los de un modelo individual sin calibración. El objetivo es entregar una guía más estable para productos operativos y decisiones donde el pronóstico condiciona el riesgo.

El sistema usa técnicas como Model Output Statistics (MOS), mapeo de cuantiles y ponderación de ensemble. En los dominios regionales, esa mezcla permite mantener una guía local útil sin cambiar cómo consultas la API.

En GribStream, nbmoc conserva los códigos de variable, niveles y valores de info del catálogo. Puedes usar los mismos endpoints y selectores que en otros códigos NBM, cambiando solo el código del modelo.

Detalle

Archivo desde: 2020-10-01
Página del producto: https://vlab.noaa.gov/web/mdl/nbm/
Características principales:
- Extiende la guía operativa de NBM v5 al dominio de la zona oceánica.
- Publica ciclos horarios para productos que necesitan actualizaciones frecuentes.
- Combina modelos globales, regionales, determinísticos y de ensemble en una salida calibrada.
- Mantiene los mismos patrones de consulta de GribStream que NBM CONUS, usando su propio código de modelo.
Resolución: Aproximadamente 10 km en la grilla oceánica.
Cobertura temporal: Actualizaciones horarias; los horizontes de pronóstico llegan hasta 264 h, alrededor de 11 días, cuando la fuente publica esos plazos.
Usos principales: Planificación marítima, gestión costera, operaciones costa afuera, rutas de navegación, seguros marítimos, energía, turismo y productos que necesitan guía NBM sobre océano.

Datasets relacionados

Parámetros

Haz clic en un parámetro para ver sus variantes en una tabla compacta con selectores JSON listos para copiar. Los códigos, niveles y valores de selector se mantienen exactamente como los expone la API.

APTMP –Apparent Temperature (K)

1 variant

Apparent temperature combines air temperature, humidity, and wind to estimate how hot or cold it feels to humans. It is useful for heat and cold stress assessments.

Units: K.

Level	Info	Horizon	Introduced	Selector
`2 m above ground`		2h-264h	2026-05-05	`{"name":"APTMP","level":"2 m above ground","info":""}`

DPT –Dew Point Temperature (K)

1 variant

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`	`50% level`	2h-264h	2026-05-05	`{"name":"DPT","level":"2 m above ground","info":"50% level"}`

FRZSPR –Freezing Spray Indicator (boolean)

1 variant

Freezing spray indicator flags marine conditions favorable for ice accretion on vessels. It depends on wind, air temperature, and wave conditions.

Units: boolean.

Level	Info	Horizon	Introduced	Selector
`surface`		2h-264h	2024-04-15	`{"name":"FRZSPR","level":"surface","info":""}`

GUST –Wind Speed (Gust) (m/s)

1 variant

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`	`50% level`	2h-264h	2020-10-01	`{"name":"GUST","level":"10 m above ground","info":"50% level"}`

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`		2h-240h	2020-10-01	`{"name":"HTSGW","level":"surface","info":""}`
`surface`	`10% level`	2h-240h	2023-01-16	`{"name":"HTSGW","level":"surface","info":"10% level"}`
`surface`	`50% level`	2h-240h	2023-01-16	`{"name":"HTSGW","level":"surface","info":"50% level"}`
`surface`	`90% level`	2h-240h	2023-01-16	`{"name":"HTSGW","level":"surface","info":"90% level"}`
`surface`	`ens std dev`	2h-240h	2020-10-01	`{"name":"HTSGW","level":"surface","info":"ens std dev"}`

TCDC –Total Cloud Cover (percent)

2 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`		2h-264h	2026-05-05	`{"name":"TCDC","level":"surface","info":""}`
`surface`	`ens std dev`	2h-264h	2026-05-05	`{"name":"TCDC","level":"surface","info":"ens std dev"}`

THUNC –Thunderstorm Probability (percent)

1 variant

Thunderstorm probability gives the chance of thunderstorms during the valid period. It is used for convective hazard guidance.

Units: percent.

Level	Info	Horizon	Introduced	Selector
`entire atmosphere`		1h-36h	2023-01-16	`{"name":"THUNC","level":"entire atmosphere","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`	`50% level`	2h-264h	2020-10-01	`{"name":"TMP","level":"2 m above ground","info":"50% level"}`
`surface`		2h-264h	2020-10-01	`{"name":"TMP","level":"surface","info":""}`

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`		2h-167h	2024-05-14	`{"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`		2h-167h	2024-05-14	`{"name":"TPWSPD","level":"10 m above ground","info":""}`

TSTM –Thunderstorm Indicator (boolean)

1 variant

Thunderstorm indicator flags the presence of thunderstorm conditions in the grid cell. It is used as a categorical hazard field.

Units: boolean.

Level	Info	Horizon	Introduced	Selector
`surface`	`probability forecast`	1h-192h	2020-10-01	`{"name":"TSTM","level":"surface","info":"probability forecast"}`

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`	`50% level`	2h-264h	2020-10-01	`{"name":"VIS","level":"surface","info":"50% level"}`

WDIR –Wind Direction (degrees)

6 variants

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

Units: degrees.

Level	Info	Horizon	Introduced	Selector
`10 m above ground`		5h-264h	2020-10-01	`{"name":"WDIR","level":"10 m above ground","info":""}`
`10 m above ground`	`50% level`	5h-264h	2020-10-01	`{"name":"WDIR","level":"10 m above ground","info":"50% level"}`
`10 m above ground`	`75% level`	5h-264h	2020-10-01	`{"name":"WDIR","level":"10 m above ground","info":"75% level"}`
`10 m above ground`	`90% level`	5h-264h	2020-10-01	`{"name":"WDIR","level":"10 m above ground","info":"90% level"}`
`30 m above ground`	`50% level`	5h-264h	2020-10-01	`{"name":"WDIR","level":"30 m above ground","info":"50% level"}`
`80 m above ground`	`50% level`	5h-264h	2020-10-01	`{"name":"WDIR","level":"80 m above ground","info":"50% level"}`

WIND –Wind Speed (m/s)

8 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`		5h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":""}`
`10 m above ground`	`10% level`	2h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":"10% level"}`
`10 m above ground`	`25% level`	2h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":"25% level"}`
`10 m above ground`	`50% level`	2h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":"50% level"}`
`10 m above ground`	`75% level`	2h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":"75% level"}`
`10 m above ground`	`90% level`	2h-264h	2020-10-01	`{"name":"WIND","level":"10 m above ground","info":"90% level"}`
`30 m above ground`	`50% level`	2h-264h	2020-10-01	`{"name":"WIND","level":"30 m above ground","info":"50% level"}`
`80 m above ground`	`50% level`	2h-264h	2020-10-01	`{"name":"WIND","level":"80 m above ground","info":"50% level"}`

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