GribStream

GraphCast Operational IFS再予報API

GribStreamコード: aiwpgraphcastifs

AIWP Pangu-Weatherのソース単位による2 m気温と海面更正気圧の等値線を全球格子に表示した図
2026年7月17日12 UTC初期値、予報時間120 hのAIWP Pangu-Weather t2（K）とmsl等値線（Pa）を、0.25度ネイティブ全球格子の1,038,240セルすべてについて単位変換せずに表示しています。 画像はaiwppanguから作成した共通格子の例です。利用できる変数はデータセットごとに異なります。

公式ソース： CIRAとNOAA GSLのAI Weather Predictionアーカイブは、再現可能な共同評価のため、GraphCast OperationalをECMWF IFS解析値から実行しています。

現在のGribStream収録範囲： aiwpgraphcastifsは2025年5月27日00 UTCの予報サイクルから始まり、新しいサイクルとともに増えます。この日時をGribStreamでの収録開始点とします。

研究用の実験的配信： レジストリは欠測の可能性と可用性が保証されないことを明記しています。公開READMEではデータが現状有姿で提供されることに加え、配信時刻やディレクトリ構成が過去に変更されたことも説明されています。この評価用データセットはNOAAまたはECMWFの公式運用予報ではありません。停止の影響が大きいシステムの唯一の依存先にはせず、forecasted_at（モデル実行時刻）の鮮度を監視し、代替となる運用データセットを確保してください。

バージョンの連続性： 各GribStreamコードは現在のソースモデルバージョンに固定されます。実質的に異なる新バージョンは、この履歴に密かに結合せず、別のデータセットコードとして提供します。

概要

GraphCast Operationalはデータ駆動型の全球モデルです。AIWPはこの版をIFSで、すなわちECMWF IFS解析値を初期値として実行し、モデルの学習または微調整期間と重ならないよう2022年1月以降を選んでいます。

GraphCast Operationalの論文が設計を説明しています。GraphCastは多尺度メッシュ上のgraph neural networkを使い、緯度経度格子の状態をメッシュへ符号化し、大気を6時間進め、結果を全球格子へ復号します。 公表結果は特定の実験を示すもので、現在のアーカイブの性能を保証するものではありません。

GraphCast Operationalのインベントリは2 m気温、10 m風、平均海面気圧、6時間積算降水量に加え、鉛直速度を含む13気圧面の6変数。 大規模循環、熱構造、水蒸気輸送、気象システムの発達を調べるための場を提供します。

aiwpgraphcastはもう一方の初期条件システムを使います。両者の比較は初期状態への感度を調べる助けになりますが、モデル品質だけを分離する比較ではありません。GFSとIFSは異なる解析システムです。このページはIFS版です。

これは決定論的な研究予報であり、不確実性プロダクトではありません。降水量は6時間積算です。IFS初期値版では最初の2つの降水データが全球格子で欠損しているため、大気場は6時間先、降水量は12時間先から始まります。 運用上の判断では、現在の公式予報と比較してください。チームはAIWPアーカイブ論文の引用を求めています。

詳細

関連データセット

気象パラメータ

パラメータ検索
0 パラメータ

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。

apcp –6-hr accumulated precipitation (m)
1 variant

6-hr accumulated precipitation (m).

Level Info Horizon Introduced Selector
12h-240h 2025-05-27
{"name":"apcp","level":"","info":""}
msl –Pressure reduced to MSL (Pa)
1 variant

Pressure reduced to MSL (Pa).

Level Info Horizon Introduced Selector
6h-240h 2025-05-27
{"name":"msl","level":"","info":""}
q –Specific humidity (kg kg-1)
13 variants

Specific humidity (kg kg-1).

Level Info Horizon Introduced Selector
100 hPa 6h-240h 2025-05-27
{"name":"q","level":"100 hPa","info":""}
1000 hPa 6h-240h 2025-05-27
{"name":"q","level":"1000 hPa","info":""}
150 hPa 6h-240h 2025-05-27
{"name":"q","level":"150 hPa","info":""}
200 hPa 6h-240h 2025-05-27
{"name":"q","level":"200 hPa","info":""}
250 hPa 6h-240h 2025-05-27
{"name":"q","level":"250 hPa","info":""}
300 hPa 6h-240h 2025-05-27
{"name":"q","level":"300 hPa","info":""}
400 hPa 6h-240h 2025-05-27
{"name":"q","level":"400 hPa","info":""}
50 hPa 6h-240h 2025-05-27
{"name":"q","level":"50 hPa","info":""}
500 hPa 6h-240h 2025-05-27
{"name":"q","level":"500 hPa","info":""}
600 hPa 6h-240h 2025-05-27
{"name":"q","level":"600 hPa","info":""}
700 hPa 6h-240h 2025-05-27
{"name":"q","level":"700 hPa","info":""}
850 hPa 6h-240h 2025-05-27
{"name":"q","level":"850 hPa","info":""}
925 hPa 6h-240h 2025-05-27
{"name":"q","level":"925 hPa","info":""}
t –Temperature (K)
13 variants

Temperature (K).

Level Info Horizon Introduced Selector
100 hPa 6h-240h 2025-05-27
{"name":"t","level":"100 hPa","info":""}
1000 hPa 6h-240h 2025-05-27
{"name":"t","level":"1000 hPa","info":""}
150 hPa 6h-240h 2025-05-27
{"name":"t","level":"150 hPa","info":""}
200 hPa 6h-240h 2025-05-27
{"name":"t","level":"200 hPa","info":""}
250 hPa 6h-240h 2025-05-27
{"name":"t","level":"250 hPa","info":""}
300 hPa 6h-240h 2025-05-27
{"name":"t","level":"300 hPa","info":""}
400 hPa 6h-240h 2025-05-27
{"name":"t","level":"400 hPa","info":""}
50 hPa 6h-240h 2025-05-27
{"name":"t","level":"50 hPa","info":""}
500 hPa 6h-240h 2025-05-27
{"name":"t","level":"500 hPa","info":""}
600 hPa 6h-240h 2025-05-27
{"name":"t","level":"600 hPa","info":""}
700 hPa 6h-240h 2025-05-27
{"name":"t","level":"700 hPa","info":""}
850 hPa 6h-240h 2025-05-27
{"name":"t","level":"850 hPa","info":""}
925 hPa 6h-240h 2025-05-27
{"name":"t","level":"925 hPa","info":""}
t2 –2 metre temperature (K)
1 variant

2 metre temperature (K).

Level Info Horizon Introduced Selector
6h-240h 2025-05-27
{"name":"t2","level":"","info":""}
u –U component of wind (m s-1)
13 variants

U component of wind (m s-1).

Level Info Horizon Introduced Selector
100 hPa 6h-240h 2025-05-27
{"name":"u","level":"100 hPa","info":""}
1000 hPa 6h-240h 2025-05-27
{"name":"u","level":"1000 hPa","info":""}
150 hPa 6h-240h 2025-05-27
{"name":"u","level":"150 hPa","info":""}
200 hPa 6h-240h 2025-05-27
{"name":"u","level":"200 hPa","info":""}
250 hPa 6h-240h 2025-05-27
{"name":"u","level":"250 hPa","info":""}
300 hPa 6h-240h 2025-05-27
{"name":"u","level":"300 hPa","info":""}
400 hPa 6h-240h 2025-05-27
{"name":"u","level":"400 hPa","info":""}
50 hPa 6h-240h 2025-05-27
{"name":"u","level":"50 hPa","info":""}
500 hPa 6h-240h 2025-05-27
{"name":"u","level":"500 hPa","info":""}
600 hPa 6h-240h 2025-05-27
{"name":"u","level":"600 hPa","info":""}
700 hPa 6h-240h 2025-05-27
{"name":"u","level":"700 hPa","info":""}
850 hPa 6h-240h 2025-05-27
{"name":"u","level":"850 hPa","info":""}
925 hPa 6h-240h 2025-05-27
{"name":"u","level":"925 hPa","info":""}
u10 –10 metre U wind component (m s-1)
1 variant

10 metre U wind component (m s-1).

Level Info Horizon Introduced Selector
6h-240h 2025-05-27
{"name":"u10","level":"","info":""}
v –V component of wind (m s-1)
13 variants

V component of wind (m s-1).

Level Info Horizon Introduced Selector
100 hPa 6h-240h 2025-05-27
{"name":"v","level":"100 hPa","info":""}
1000 hPa 6h-240h 2025-05-27
{"name":"v","level":"1000 hPa","info":""}
150 hPa 6h-240h 2025-05-27
{"name":"v","level":"150 hPa","info":""}
200 hPa 6h-240h 2025-05-27
{"name":"v","level":"200 hPa","info":""}
250 hPa 6h-240h 2025-05-27
{"name":"v","level":"250 hPa","info":""}
300 hPa 6h-240h 2025-05-27
{"name":"v","level":"300 hPa","info":""}
400 hPa 6h-240h 2025-05-27
{"name":"v","level":"400 hPa","info":""}
50 hPa 6h-240h 2025-05-27
{"name":"v","level":"50 hPa","info":""}
500 hPa 6h-240h 2025-05-27
{"name":"v","level":"500 hPa","info":""}
600 hPa 6h-240h 2025-05-27
{"name":"v","level":"600 hPa","info":""}
700 hPa 6h-240h 2025-05-27
{"name":"v","level":"700 hPa","info":""}
850 hPa 6h-240h 2025-05-27
{"name":"v","level":"850 hPa","info":""}
925 hPa 6h-240h 2025-05-27
{"name":"v","level":"925 hPa","info":""}
v10 –10 metre V wind component (m s-1)
1 variant

10 metre V wind component (m s-1).

Level Info Horizon Introduced Selector
6h-240h 2025-05-27
{"name":"v10","level":"","info":""}
w –Vertical velocity (Pa s-1)
13 variants

Vertical velocity (Pa s-1).

Level Info Horizon Introduced Selector
100 hPa 6h-240h 2025-05-27
{"name":"w","level":"100 hPa","info":""}
1000 hPa 6h-240h 2025-05-27
{"name":"w","level":"1000 hPa","info":""}
150 hPa 6h-240h 2025-05-27
{"name":"w","level":"150 hPa","info":""}
200 hPa 6h-240h 2025-05-27
{"name":"w","level":"200 hPa","info":""}
250 hPa 6h-240h 2025-05-27
{"name":"w","level":"250 hPa","info":""}
300 hPa 6h-240h 2025-05-27
{"name":"w","level":"300 hPa","info":""}
400 hPa 6h-240h 2025-05-27
{"name":"w","level":"400 hPa","info":""}
50 hPa 6h-240h 2025-05-27
{"name":"w","level":"50 hPa","info":""}
500 hPa 6h-240h 2025-05-27
{"name":"w","level":"500 hPa","info":""}
600 hPa 6h-240h 2025-05-27
{"name":"w","level":"600 hPa","info":""}
700 hPa 6h-240h 2025-05-27
{"name":"w","level":"700 hPa","info":""}
850 hPa 6h-240h 2025-05-27
{"name":"w","level":"850 hPa","info":""}
925 hPa 6h-240h 2025-05-27
{"name":"w","level":"925 hPa","info":""}
z –Geopotential (m2 s-2)
13 variants

Geopotential (m2 s-2).

Level Info Horizon Introduced Selector
100 hPa 6h-240h 2025-05-27
{"name":"z","level":"100 hPa","info":""}
1000 hPa 6h-240h 2025-05-27
{"name":"z","level":"1000 hPa","info":""}
150 hPa 6h-240h 2025-05-27
{"name":"z","level":"150 hPa","info":""}
200 hPa 6h-240h 2025-05-27
{"name":"z","level":"200 hPa","info":""}
250 hPa 6h-240h 2025-05-27
{"name":"z","level":"250 hPa","info":""}
300 hPa 6h-240h 2025-05-27
{"name":"z","level":"300 hPa","info":""}
400 hPa 6h-240h 2025-05-27
{"name":"z","level":"400 hPa","info":""}
50 hPa 6h-240h 2025-05-27
{"name":"z","level":"50 hPa","info":""}
500 hPa 6h-240h 2025-05-27
{"name":"z","level":"500 hPa","info":""}
600 hPa 6h-240h 2025-05-27
{"name":"z","level":"600 hPa","info":""}
700 hPa 6h-240h 2025-05-27
{"name":"z","level":"700 hPa","info":""}
850 hPa 6h-240h 2025-05-27
{"name":"z","level":"850 hPa","info":""}
925 hPa 6h-240h 2025-05-27
{"name":"z","level":"925 hPa","info":""}

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