GribStream

NOAA National Blend of Models - Oceanic

GribStreamコード: 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.

他のNBM主要格子: nbm, nbmak, nbmhi, nbmpr, nbmgu

NBM v5ステータス: このデータセットではNBM v5が運用版になっています。GribStreamアーカイブでは、2026-05-05 12:00 UTCより前のモデル実行は以前の運用NBM版を含み、2026-05-05 12:00 UTC以降のモデル実行はNBM v5を使います。

APCP、ASNOW、FICEACのような積算フィールドは、ソースに存在する場合、NBM v5で拡張された1時間ごとの予報範囲を通り、その後は/timeseriesでより長い積算期間に進みます。欠落や重複する期間を作らないように扱います。

概要

NBM Oceanicは、National Blend of ModelsのOceanic領域向け出力です。米国本土の主要格子ではなく、その対象領域に合わせた格子へNOAAの運用後処理を適用します。

NBMは複数の予報ソースを組み合わせ、統計的に較正することで、単一の未較正モデルより一貫したフィールドを作ります。目的は、天候リスクが意思決定に関わる運用プロダクトへ、より安定した予報基盤を提供することです。

システムはMOS（Model Output Statistics）、Quantile Mapping、アンサンブル重み付けなどの手法を使います。地域別のNBMでもAPIワークフローは同じで、対象地域のNBMデータセットを選び、他のNBMコードと同じカタログセレクタを使います。

GribStreamでは、nbmocがカタログの変数コード、level、info値をそのまま保持します。同じエンドポイントとセレクタの形を使い、モデルコードだけを切り替えられます。

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パラメータをクリックすると、コピーしやすいJSONセレクタ付きのコンパクトな表で候補を確認できます。コード、level、selector値はAPIが公開する値をそのまま保持します。

APTMP –Apparent Temperature (K)
1 variant
NOAA GRIB2 Table 4.2-0-0

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
NOAA GRIB2 Table 4.2-0-0

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
NOAA GRIB2

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
NOAA GRIB2 Table 4.2-0-2

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
NOAA GRIB2 Table 4.2-0-3

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
NOAA GRIB2 Table 4.2-0-6

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
NOAA GRIB2 Table 4.2-0-7

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
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
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
NOAA GRIB2 Table 4.2-0-1

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
NOAA GRIB2 Table 4.2-0-1

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
NOAA GRIB2

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
NOAA GRIB2 Table 4.2-0-7

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
NOAA GRIB2 Table 4.2-0-2

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
NOAA GRIB2 Table 4.2-0-2

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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