GribStream

NOAA AI Global Ensemble Forecast System Pressure Levels (AIGEFS Pressure)

GribStreamコード: aigefspres

運用ステータス: NOAAは2025-12-17にAIGFS v1.0とAIGEFS v1.0をHGEFSとあわせて運用開始しました。GribStreamでは、これらのデータセットがNOAAの現在のAIベース全球予報ラインです。graphcastは比較や過去検証向けの履歴アーカイブとして残しています。

技術リファレンス: NOAA EAGLE AWS Open Data registry、NCEP AIGEFS products、NOMADS distribution、NWS SCN 25-89、NOAA/NCEP Office Note 521を参照してください。

概要

AIGEFS PressureはNOAA/NCEPのAI Global Ensemble Forecast Systemの気圧面プロダクトです。31メンバーそれぞれの鉛直大気構造を提供します。

NOAAはAI-GFSファミリーをGraphCastベースの予報値として説明しています。AIGEFSではこれをアンサンブルとして実行し、メンバーごとにGEFS、ECMWFアンサンブル、AIベースの決定論的全球予報と比較できます。

主な価値は、上空の不確実性を測れることです。シナリオがどれだけ離れるか、どこで一致するか、あるリードタイム（モデル実行からの予報時間）でどの範囲が現実的かを評価できます。

aigefspresはメンバー0から30について、50, 100, 150, 200, 250, 300, 400, 500, 600, 700, 850, 925, 1000 mbの標準気圧面で、U/V風、気温、ジオポテンシャル高度、比湿、鉛直速度を含みます。

詳細

関連データセット

気象パラメータ

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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。

HGT –Geopotential Height (gpm)
13 variants
NOAA GRIB2 Table 4.2-0-3

Geopotential height is the altitude of a pressure surface in the atmosphere. It is the primary field for identifying ridges, troughs, and large‑scale flow patterns.

  • Units: gpm.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2025-06-01
{"name":"HGT","level":"100 mb","info":""}
1000 mb 0h-384h 2025-06-01
{"name":"HGT","level":"1000 mb","info":""}
150 mb 0h-384h 2025-06-01
{"name":"HGT","level":"150 mb","info":""}
200 mb 0h-384h 2025-06-01
{"name":"HGT","level":"200 mb","info":""}
250 mb 0h-384h 2025-06-01
{"name":"HGT","level":"250 mb","info":""}
300 mb 0h-384h 2025-06-01
{"name":"HGT","level":"300 mb","info":""}
400 mb 0h-384h 2025-06-01
{"name":"HGT","level":"400 mb","info":""}
50 mb 0h-384h 2025-06-01
{"name":"HGT","level":"50 mb","info":""}
500 mb 0h-384h 2025-06-01
{"name":"HGT","level":"500 mb","info":""}
600 mb 0h-384h 2025-06-01
{"name":"HGT","level":"600 mb","info":""}
700 mb 0h-384h 2025-06-01
{"name":"HGT","level":"700 mb","info":""}
850 mb 0h-384h 2025-06-01
{"name":"HGT","level":"850 mb","info":""}
925 mb 0h-384h 2025-06-01
{"name":"HGT","level":"925 mb","info":""}
SPFH –Specific Humidity (kg/kg)
13 variants
NOAA GRIB2 Table 4.2-0-1

Specific humidity is the mass of water vapor per mass of air at the specified level. It is central to moisture transport.

  • Units: kg/kg.
  • Higher values indicate more atmospheric moisture and greater cloud or precip potential.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"100 mb","info":""}
1000 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"1000 mb","info":""}
150 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"150 mb","info":""}
200 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"200 mb","info":""}
250 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"250 mb","info":""}
300 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"300 mb","info":""}
400 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"400 mb","info":""}
50 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"50 mb","info":""}
500 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"500 mb","info":""}
600 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"600 mb","info":""}
700 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"700 mb","info":""}
850 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"850 mb","info":""}
925 mb 0h-384h 2025-06-01
{"name":"SPFH","level":"925 mb","info":""}
TMP –Temperature (K)
13 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
100 mb 0h-384h 2025-06-01
{"name":"TMP","level":"100 mb","info":""}
1000 mb 0h-384h 2025-06-01
{"name":"TMP","level":"1000 mb","info":""}
150 mb 0h-384h 2025-06-01
{"name":"TMP","level":"150 mb","info":""}
200 mb 0h-384h 2025-06-01
{"name":"TMP","level":"200 mb","info":""}
250 mb 0h-384h 2025-06-01
{"name":"TMP","level":"250 mb","info":""}
300 mb 0h-384h 2025-06-01
{"name":"TMP","level":"300 mb","info":""}
400 mb 0h-384h 2025-06-01
{"name":"TMP","level":"400 mb","info":""}
50 mb 0h-384h 2025-06-01
{"name":"TMP","level":"50 mb","info":""}
500 mb 0h-384h 2025-06-01
{"name":"TMP","level":"500 mb","info":""}
600 mb 0h-384h 2025-06-01
{"name":"TMP","level":"600 mb","info":""}
700 mb 0h-384h 2025-06-01
{"name":"TMP","level":"700 mb","info":""}
850 mb 0h-384h 2025-06-01
{"name":"TMP","level":"850 mb","info":""}
925 mb 0h-384h 2025-06-01
{"name":"TMP","level":"925 mb","info":""}
UGRD –U-Component of Wind (m/s)
13 variants
NOAA GRIB2 Table 4.2-0-2

U‑component of wind is the east‑west component of the horizontal wind. Combine with v for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"100 mb","info":""}
1000 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"1000 mb","info":""}
150 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"150 mb","info":""}
200 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"200 mb","info":""}
250 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"250 mb","info":""}
300 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"300 mb","info":""}
400 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"400 mb","info":""}
50 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"50 mb","info":""}
500 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"500 mb","info":""}
600 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"600 mb","info":""}
700 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"700 mb","info":""}
850 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"850 mb","info":""}
925 mb 0h-384h 2025-06-01
{"name":"UGRD","level":"925 mb","info":""}
VGRD –V-Component of Wind (m/s)
13 variants
NOAA GRIB2 Table 4.2-0-2

V‑component of wind is the north‑south component of the horizontal wind. Combine with u for speed and direction.

  • Units: m/s.
  • Combine u and v components to compute speed and direction.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"100 mb","info":""}
1000 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"1000 mb","info":""}
150 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"150 mb","info":""}
200 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"200 mb","info":""}
250 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"250 mb","info":""}
300 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"300 mb","info":""}
400 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"400 mb","info":""}
50 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"50 mb","info":""}
500 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"500 mb","info":""}
600 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"600 mb","info":""}
700 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"700 mb","info":""}
850 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"850 mb","info":""}
925 mb 0h-384h 2025-06-01
{"name":"VGRD","level":"925 mb","info":""}
VVEL –Vertical Velocity (Pressure) (Pa/s)
13 variants
NOAA GRIB2 Table 4.2-0-2

Vertical velocity in pressure coordinates (omega). Negative values indicate upward motion (rising air); positive values indicate subsidence.

  • Units: Pa/s.
Level Info Horizon Introduced Selector
100 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"100 mb","info":""}
1000 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"1000 mb","info":""}
150 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"150 mb","info":""}
200 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"200 mb","info":""}
250 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"250 mb","info":""}
300 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"300 mb","info":""}
400 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"400 mb","info":""}
50 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"50 mb","info":""}
500 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"500 mb","info":""}
600 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"600 mb","info":""}
700 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"700 mb","info":""}
850 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"850 mb","info":""}
925 mb 0h-384h 2025-06-01
{"name":"VVEL","level":"925 mb","info":""}

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