GribStream

NOAA National Blend of Models Parallel - Oceanic

Código GribStream: nbmparoc

Outras grades NBM Parallel: nbmpar, nbmparak, nbmparhi, nbmparpr, nbmpargu

Status: o NBM v5 já está operacional no GribStream em nbmoc. Em nbmoc, execuções anteriores a 2026-05-05 12:00 UTC contêm a versão operacional anterior do NBM; execuções a partir de 2026-05-05 12:00 UTC usam o NBM v5. Para integrações de produção com NBM v5, use nbmoc; os datasets nbmpar* ficam reservados para futuras iterações experimentais do NBM se a NOAA voltar a publicá-las na linha paralela.

A fonte pública é noaa-nbm-para-pds. O GribStream mantém a linha paralela em códigos dedicados para você compará-la com a família operacional do NBM sem misturá-la ao arquivo usado pelas suas integrações atuais.

Referências técnicas: PNS 25-45, notas de configuração Winter v5.0 e NBM Versions.

Descrição

NBM Parallel Oceanic é a saída pública paralela do National Blend of Models para a grade oceânica. Ela serve para comparação e validação quando a NOAA publica uma linha experimental ao lado da versão operacional.

Para produção com NBM v5, o dataset recomendado é nbmoc. nbmparoc fica como referência de comparação e como espaço para futuras iterações experimentais que a NOAA possa publicar na linha paralela.

O NBM v5 não foi apenas uma atualização de parâmetros. A NOAA ampliou grande parte da base horária de previsão de 36 h para 48 h e revisou a mistura com mais Quantile Mapping, mudanças em vento e rajadas determinísticas, e entradas de maior resolução do ECMWF e do Canadá.

Para o domínio oceânico, as notas do NBM v5 destacam orientação probabilística de vento e rajadas corrigida por Quantile Mapping, produtos atualizados de temperatura, ponto de orvalho e nebulosidade, e uma correção de altura significativa de onda que passa a usar Quantile Mapping com um conjunto muito mais amplo de fontes de entrada.

No GribStream, nbmparoc mantém seletores estáveis: os valores de name, level e info são copiados exatamente do catálogo e não são traduzidos.

Detalhes

Datasets relacionados

Parâmetros

0 parâmetros

Clique em um parâmetro para ver as variantes em uma tabela compacta, com seletores JSON prontos para copiar. Códigos, níveis e valores do seletor ficam exatamente como a API expõe.

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 5 days ago
{"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 5 days ago
{"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 5 days ago
{"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 5 days ago
{"name":"GUST","level":"10 m above ground","info":"50% level"}
PWAT Precipitable Water (kg/m^2)
9 variants

Precipitable water is the total column water vapor from the surface to the top of the atmosphere. It is a key moisture indicator.

  • Units: kg/m^2.
Level Info Horizon Introduced Selector
entire atmosphere (considered as a single layer) 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":""}
entire atmosphere (considered as a single layer) 10% level 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"10% level"}
entire atmosphere (considered as a single layer) 50% level 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"50% level"}
entire atmosphere (considered as a single layer) 90% level 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"90% level"}
entire atmosphere (considered as a single layer) prob >12.7 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"prob >12.7"}
entire atmosphere (considered as a single layer) prob >25.4 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"prob >25.4"}
entire atmosphere (considered as a single layer) prob >38.1 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"prob >38.1"}
entire atmosphere (considered as a single layer) prob >50.8 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"prob >50.8"}
entire atmosphere (considered as a single layer) prob >63.5 1h-264h 5 days ago
{"name":"PWAT","level":"entire atmosphere (considered as a single layer)","info":"prob >63.5"}
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 5 days ago
{"name":"TCDC","level":"surface","info":""}
surface ens std dev 2h-264h 5 days ago
{"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 5 days ago
{"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 5 days ago
{"name":"TMP","level":"2 m above ground","info":"50% level"}
surface 2h-264h 5 days ago
{"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 5 days ago
{"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 5 days ago
{"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 5 days ago
{"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 5 days ago
{"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 5 days ago
{"name":"WDIR","level":"10 m above ground","info":""}
10 m above ground 50% level 5h-264h 5 days ago
{"name":"WDIR","level":"10 m above ground","info":"50% level"}
10 m above ground 75% level 5h-264h 5 days ago
{"name":"WDIR","level":"10 m above ground","info":"75% level"}
10 m above ground 90% level 5h-264h 5 days ago
{"name":"WDIR","level":"10 m above ground","info":"90% level"}
30 m above ground 50% level 5h-264h 5 days ago
{"name":"WDIR","level":"30 m above ground","info":"50% level"}
80 m above ground 50% level 5h-264h 5 days ago
{"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 5 days ago
{"name":"WIND","level":"10 m above ground","info":""}
10 m above ground 10% level 2h-264h 5 days ago
{"name":"WIND","level":"10 m above ground","info":"10% level"}
10 m above ground 25% level 2h-264h 5 days ago
{"name":"WIND","level":"10 m above ground","info":"25% level"}
10 m above ground 50% level 2h-264h 5 days ago
{"name":"WIND","level":"10 m above ground","info":"50% level"}
10 m above ground 75% level 2h-264h 5 days ago
{"name":"WIND","level":"10 m above ground","info":"75% level"}
10 m above ground 90% level 2h-264h 5 days ago
{"name":"WIND","level":"10 m above ground","info":"90% level"}
30 m above ground 50% level 2h-264h 5 days ago
{"name":"WIND","level":"30 m above ground","info":"50% level"}
80 m above ground 50% level 2h-264h 5 days ago
{"name":"WIND","level":"80 m above ground","info":"50% level"}

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