| Summary: | 碩士 === 清雲科技大學 === 資訊管理所 === 100 === In this research, we use typhoon as research object. Receive MTSAT satellite data through Dartcom receiver and iDAP system. Record the obtained information then reconstruct 3D images of typhoon to observe and analyze each time point features of the typhoon life cycle. Such as main body, funnel and speckle.
Record the cloud top temperature from satellite cloud then use the Lapse rate of temperature to transform it to high degree. After reconstruction the 3D images of typhoon is more closer to the typhoon original appearance. Observation different angle and different time points typhoon feature change. Finally we use funnel depth and typhoon center''s wind speed, the Fujiwhara effect and high degree of change three parts to analyze and compare each typhoon''s feature changes.
The research result show that in typhoon center and wind speeds analyze, the middle typhoon and strong typhoon slope 3.3 m/s per km, the light typhoon slope 1.2 m/s per km. The Fujiwhara effect analyze show that two typhoons in the merger will cause secondary convection, typhoon main body will higher and typhoon funnel will deeper. Our research proposed the typhoon height increase or decrease formula. Applied to the SONGDA typhoon, it show the positive relationship between typhoon height and typhoon funnel.
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