Measurement and Analysis of Wind Field Data by Using LIDAR at HamBau Intertidal Zone

Abstract

Field measurements were conducted during the periods of time that the weather condition were predominantly influenced by the East Asian Monsoon at Ham-Bau intertidal zone located in the middle of western coastal of Taiwan The remote sensing instrument LiDAR was used to measure the vertical variation of 3 dimensional wind speed for 12 layers of altitude in the atmospheric boundary layer A sonic anemometer was also used to measure the wind data near the ground which was mounted on a small mast at 3 meters high For the analysis method several of basic parameters describing the wind characteristic were evaluated such as mean wind speed turbulence intensity Reynolds stress and so on Stability analysis and spectrum analysis were also accomplished In addition the empirical power law and theoretical log law model were used to fit the wind profile These two models were employed to simulate the ensemble averaging results that based on two kinds of classifications the diurnal variation and the difference of wind direction to study the applicability and reliability of them Moreover the numerical model Weather Research and Forecasting (WRF) model was also used in order to simulate the averaged values of wind data at the same periods of the field measurement time The simulated results as well as the measured data from an offshore wind mast were then being used to make a comparison to the field measuring LiDAR data

Date of Award	2016 Aug 22
Original language	English
Supervisor	Jiun-Jih Miau (Supervisor)