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問題 · 2026-05-18
Please write a description of ECMWF AIFS Configuration over all versions in single and ensemble
AIFS evolved from experimental single-model v0.2.1 to operational v1.0 and v1.1.0, with ensemble variants providing probabilistic forecasts through multiple members.
ECMWF的AIFS是一個基於圖神經網路的人工智慧天氣預報系統，採用編碼器-處理器-解碼器架構將網格數據轉換為多面體圖結構進行訊息傳遞[1]。單一預報版本從實驗性v0.2.1演進至2025年2月的首個正式營運版本v1.0，隨後推出v1.1.0，加入物理一致性約束、擴增預報變數並優化訓練流程，解析度約為0.25度[2]。集合預報配置透過多成員與隨機擾動機制產生數十個預報成員，用以評估大氣不確定性，延伸至15天預報期[3]。兩版本共享相近的AI架構與訓練資料，但集合版透過成員差異表達預報分散度。AIFS從早期研究型模型演進至可營運系統，逐步強化解析度、變數完整度與物理合理性，在運算效率與預報技巧上展現超越傳統數值模式的潛力[4]。
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