摘要:「臺灣區域豪雨觀測與預報實驗」(TAHOPE)為臺灣主導的大型觀測與預報實驗,預計執行三年(2019年8月到2022年7月),其中於2020年5–8月期間TAHOPE實驗將與美國PRECIP2020實驗及日本TPARC-II實驗三方共同推動國際聯合觀測實驗,是以臺灣區域為主體進行國際聯合劇烈天氣(梅雨與颱風)的密集觀測實驗,所探討研究主題包含大尺度的環境影響、中尺度的對流系統與登陸颱風、乃至小尺度的雲微物理過程等,在臺灣海島與高山陡坡特殊地形下,透過大氣密集觀測導入先進大氣預報模式,同時進行即時或準即時之資料同化與數值預報。
為順利完成此國際聯合大型觀測實驗,國內大氣學門研究劇烈天氣的學者專家們已經整合國內產官學研的觀測儀器,邀請有興趣的同仁共同向科技部提出三年之整合研究計畫(2019/08– 2022/07)。目前美方已向美國NSF與NOAA提出多種觀測儀器/載具(P3飛機、S-PolKa雷達、CSU SEA-Pol雷達等)需求,搭配國內中央氣象局現有的作業觀測設備(雷達及探空)、國研院觀測能量(C-Pol雷達、剖風儀、DOTSTAR飛機投落送、無人飛機),將於2020年5月中旬至8月與美國及日本三方共同進行國際聯合聯合觀測實驗,期間將特別對我國自主衛星(福衛7號
)GPS掩星及海面反射儀觀測進行同化及預報的效益評估。美方主要計畫主持人為CSU教授Michael Bell,加上其他知名氣象學者們(Profs. Yi-Leng Chen, Yuh-Lang Lin, Kristen Rasmussen, Rob Rogers, Fuqing Zhang等人)。我方目前已成立TAHOPE計畫辦公室,並已整合10個與觀測實驗與觀測資料即時同化相關的子計畫納入TAHOPE整合計畫,另外9個與模式與分析相關的子計畫納入「臺灣地區豪大雨預報實驗計畫」(TAHPEX)整合計畫(由王重傑教授擔任主持人),由計畫辦公室協調分工,再由兩位顧問(台大周仲島教授與NCAR郭英華博士)協助統整以強化管控,並由成立的科學指導委員會對規劃進行的實驗設計與科學目標,提出寶貴建議及修正意見。
Abstract: “Taiwan-Area Heavy rain Observation and Prediction Experiment” (TAHOPE) will be conducted from August 2019 to July 2022 to study Mei-Yu fronts, mesoscale convective systems (MCSs), and landfalling typhoons near Taiwan. During May to August 2020, TAHOPE will join the PRECIP2020 (USA) and TPARC-II (Japan) to conduct the joint field experiment for severe weather (Mei-yu fronts and
typhoons) in the vicinity of Taiwan. The main themes of TAHOPE project range from large-scale environmental influence, mesoscale convective systems as well as microscale cloud physics processes, under the special topography of Taiwan Island with steep terrain. Through the join tnetwork of intense observations, realtime or near real-time data assimilation and prediction will be conducted using advanced atmospheric models.
In order to accomplish this large internationall joint observation and prediction experiments, National Taiwan University takes a role in integrating the available domestic observation instruments and invites interested scientists to jointly submit an integrated three-year research proposal (from 1 August 2019 to 31 July 2022) to the Ministry of Science and Technology (MOST), Taiwan. The U.S. Partners have submitted requests to the National Science Foundation (NSF) and National Oceanic and Atmodpheric Administration (NOAA) on several instruments (P3-aircraft, S-PolKa radar, and CSU SEA-Pol radar) to combine with CWB’s operational observation facilities (radars and radiosondes), and the atmospheric measurements (C-Pol radar, wind profiler, dropsonde, and aerosonde) of National Applied Research Laboratory (NARL) to perform intense observation experiment during 25 May to 31 August 2020; meanwhile, the evaluation of data impact on the assimilation and prediction from Taiwan’s satellite (FORMOSAT-7) GPS RO and reflectometry measurements will be carried out during the field experiment. The U.S. partners include project principal investigators, Dr. Michael Bell (CSU professor) and many renowned scientists (Profs. Yi-Leng Chen, Yuh-Lang Lin, Kristen Rasmussen, Rob Rogers, Fuqing Zhang, and others). On Taiwan side, the TAHOPE Project Office led by Prof. Ming-Jen Yang, has been set up and integrated 10 subprojects related to the observation and data assimilation. In addition, other 9 subprojects related to the modeling and routine-data assimilation/analysis work are integrated into the
TAHPEX (Taiwan-Area Heavy-rainfall Prediction Experiment) project (which is led by Prof. Chung-Chieh Wang); the two TAHOPE and TAHPEX integrated projects are supporting each other through observation data exchange and resource sharing. Each subproject will be coordinated by the TAHOPE Project Office with the help of two project consultants (Prof. Ben J.-D. Jou at NTU and Dr. Bill Y.-H. Kuo at NCAR). The Scientific Advisory Committee consisting of senior scientists in Taiwan and USA will also provide valuable comments and suggestions on the proposed scientific goals and experimental design of the joint project.