摘要
利用973暴雨项目2002年在安徽肥西观测的涡度相关资料,针对目前涡度相关法中存在的仪器倾斜误差问题,采用两种倾斜订正方法计算湍流参数并进行对比分析。结果表明,三次坐标轴旋转倾斜订正方法和平面拟合方法均可以对仪器倾斜引起的误差进行坐标旋转订正,有效剔除仪器倾斜引起的侧向应力的影响,以及仪器倾斜时水平方向风速引起的虚假湍流通量,提高了湍流通量的计算精度。两种倾斜订正方法各有一定适用条件,平面拟合方法优于三次坐标轴旋转倾斜订正方法。
The eddy-covariance data from the in 2002 is used to contrast two axis-rotat measurement. The results show that both tri effectively the illusive-flux and side-stress err to improve flux precision. Both methods hav heavy rainfall experiment at Feixi ion method, aiming at ple axis rotation method ors caused by horizontal e its own strong points, the tilt and wind but County in Anhui Province errors of eddy-covariance planar s beca fit method can eliminate use of instrument tilt, so the planar fit method is better than triple axis rotation method relatively.
出处
《气象科技》
2008年第3期355-359,共5页
Meteorological Science and Technology
基金
国家973暴雨试验项目资助
