不同天气条件下脉冲激光风廓线仪测风性能  

The Wind Measuring Performance of WINDCUBE V2 Pulse Laser Wind Profiler Under Different Weather Conditions

作　　者：陈雯超 宋丽莉[2] 王志春 刘爱君 

机构地区：[1]广东省气象防灾技术服务中心,广州510080 [2]中国气象局公共气象服务中心,北京100081

出　　处：《应用气象学报》2017年第3期327-339,共13页Journal of Applied Meteorological Science

基　　金：科技部科技基础性工作专项(2013FY112400);中国气象局关键技术推广重点项目(CAMGJ2012Z16)

摘　　要：将2012年5月21日—8月16日广东省湛江市东海岛气象观测站内脉冲激光风廓线仪WINDCUBE V2与气象站内的100 m测风塔进行同步观测试验,在经过观测数据同步性调整、有效性检验和代表性样本筛选基础上,分大小风和有无降雨天气过程,对杯式测风仪、超声风速仪与激光风廓线仪的同步测风数据进行比较,结果显示:脉冲激光风廓线仪与杯式测风仪测量水平风参数的相关性较好,10 min平均风速、风向的线性拟合度均大于0.99,3 s阵风风速的拟合度大于0.96,湍流强度的拟合度大于0.67,风速标准差的拟合度大于0.79;大风情况下,激光风廓线仪对风参数的测量效果更佳。无降雨情况下,激光风廓线仪的测量效果较降雨时略好,10 min降水量小于15 mm的降雨对这款激光风廓线仪的风速、风向、湍流强度、3 s阵风风速的测量没有显著影响,对风速标准差有一定影响。当水平风速增大和有降雨时,激光风廓线仪对垂直速度的测量效果欠佳。该对比分析可为激光风廓线仪观测数据的可靠性提供参考。The wind data observed by the gradient wind observation system set on 100 m high tower in Donghai Island meteorology station located in Zhanjiang, Guangdong Province are compared with the wind data measured by WINDCUBE V2 pulse laser wind profiler installed at the same site from 21 May to 16 August in 2012. Based on time synchronization adjustment, validity test and sample selection, a comparative anal- ysis is conducted using several wind parameters observed at heights of 50 m, 65 m, 70 m, 100 m by cup anemometer, ultrasonic anemometer and WINDCUBE V2 under weak wind, strong wind, sunny and rainy days. Results show that fitting degrees of horizontal wind parameters are quite good. Fitting degrees of wind speed and wind direction measured by WINDCUBE V2 and cup anemometer are up to more than 0.99. The fitting degree of 3 s gust wind speed is over 0.96. Fitting degrees of 3 s gust wind speed, turbu- lence intensity and wind speed standard deviation are over 0.96, 0.67 and 0.79, respectively. The WIND- CUBE V2 performs a little better under strong wind and no rainfall condition when measuring the above wind parameters. Fitting degrees of wind speed and wind direction of strong wind samples are a litter larer than that of weak wind samples. More than 90% strong wind speed relative deviation vary between -4.5% and 2.5% while more than 90% wind speed relative deviation vary between -11.5% and 5.5% under weak wind condition. Overall, the precipitation has no obvious influence on the measurement of wind speed, wind direction, turbulence intensity and gust wind speed by WlNDCUBE V2 when the 10 min rainfall intensity is less than 15 mm while measurements of wind speed standard deviation are a bit influ- enced by precipitation. Fitting degrees of wind speed and wind direction of samples without rain are a litter larger than that on rainy days, but both are over 0.99. The WINDCUBE V2 performs weaker at the vertical airflow velocity measurement under the increasing of horizontal wind speed and the precipitation. The fitting

关 键 词：脉冲激光风廓线仪 风参数分析 拟合度 

分 类 号：P407.5[天文地球—大气科学及气象学]