運用雷射式剖風儀剖析風切變訊號之研究

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Title:	運用雷射式剖風儀剖析風切變訊號之研究 Wind Shear Assessment Using Wind Lidar Profiler
Authors:	劉清煌
Contributors:	大氣科學系
Keywords:	車載雷射式剖風儀風場合成低空風切亂流
Date:	2020
Issue Date:	2020-02-21 15:20:47 (UTC+8)
Abstract:	目前氣象聯隊已將四具車載雷射式剖風儀分別駐紮於空軍松山機場（北部地區）、空軍清泉崗機場（中部地區）、空軍屏東機場（南部地區）及空軍花蓮機場（東部地區），平時提供機場垂直風場時序演變及任務時期國軍戰演訓或防（救）災任務。若能量化中低空層大氣之飛安潛危因子（風切變）並完成定性風險等級判別，將可避免人為主觀判定瑕疵進一步降低任務風險增加任務功算，因此剖析風切變訊號之研究是迫不容緩的首要課題。本研究將以建置完備的車載雷射式剖風儀，在國軍航空器運行區域實施週期性的長期觀測，篩選有效的觀測資料，並參用國內外研究報告，量化風切變風險等級對照表，以提高對風切變預報之掌握能力、降低本軍戰訓任務執行時受風切變影響的不確定性，同時也可延伸運用於軍民合用機場的民航服務等，改善地區空域即時風場評估，藉此掌握低空風切與亂流，發揮剖風儀高時空真實風場資訊以掌握中小尺度天氣現象，提升區域天氣變化之掌握能力。 Currently, the Weather Wing, Air Force has installed 4 wind lidar profilers at Song-Shan, CCK, Ping-Dong, and Hua-Lian airports. In the meantime, these facilities are observing vertical wind profile operationally and supports the air force flight training and disaster mitigation. In practice, the low level wind shear is potential danger to the aircraft during take-off and landing. Base on the wind lidar measurement, it is important to quantify the vertical wind shear intensity to support the forecaster for issuing wind shear waring. The Weather Wing wind lidar have more than one year of observation data. In this study, the observed wind data will be carefully analyzed. According the past studies and references, the strong wind shear environment will be identified and the shear intensity will be quantified into various dangerous levels, such as shear intensity index. This index may help forecaster to better handle the small scale weather and reduce the uncertainty when forecaster are issuing a waring.
Appears in Collections:	[Department of Atmospheric Sciences & Graduate Institute of Earth Science / Atmospheric Science ] project

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