本研究以早期美國學者依曼紐-諾藍(Emanuel and Nolan 2004)提出之颱風生成潛在指數(Genesis Potential Index, GPI)及後續依曼紐以濕熵差取代相對濕度之改進版本;^GPI指數(Emanuel 2010)為基礎， 提出一個更適合推估西北太平洋海域颱風活動變化趨勢之xMqGPI指數。我們利用美國國家海洋大氣管 理局提供之颱風最佳路徑資料以及歐洲中期天氣預報中心之大氣海洋再分析資料，詳細診斷分析 xMqGPI指數優於GPI和^GPI指數之原因。

Based on the early study of Emanuel and Nolan's (2004) original genesis potential index (GPI) and the Emanuel's (2010) revised version (xGPI), in which the relative humidity term was replaced by moist entropy deficit, we proposed a new typhoon genesis potential index (xMqGPI) designed specifically for the western North Pacific basin. We utilized the NOAA's best-track typhoon data and ECMWF's atmospheric reanalysis data to demonstrate the advantage of xMqGPI over the western North Pacific in comparison with GPI and xGPI.