摘要
本文利用内蒙古科尔沁沙地开展的大气边界层实验资料。对比分析了美国Teledyne公司专为微气象学精细结构研究生产的M50.1B型轻型低闭值风杯风速计和长春气象仪器研究所生产的EC9—1型风杯风速计的误差和订正方法。结果表明:两种风杯风速仪各自水平比较实验结果都具有较好的一致性;美国风杯风速计偏离其平均值的百分比与风速有较为显著的负相关关系。通过对MS0.1B型风杯风速计与超声风速仪的对比观测,本文还计算并讨论了M50.1B型轻型低阈值风杯风速计的误差大小和可能的误差来源,发现DP误差所占的比例较低。而U误差和其它因素对该风杯风速计测风有较强的影响。
The errors of anemometer should be carefully studied in the micrometeorology research. In this paper, the overspeed of two kinds of cup anemometers, model EC9 - 1 and model M50. IB. is analyzed. The results show that: (1) Velocity measured by the 7 level EC9 - 1 cup anemometers and 7 level M50. IB cup anemometers coincides well with each other considering the existence of random errors, respectively. (2) The deviation of M50. IB cup anemometers from their average has a stronger negative correlation with wind speed than that of EC9 -1 cup anemometers. (3) Specifically, comparing cup anemometer with sonic anemometer, DP-error accounts for only a small part, and u -error, maybe including some other factors, constituting the main source of the errors.
出处
《气象水文海洋仪器》
2003年第2期1-11,共11页
Meteorological,Hydrological and Marine Instruments
关键词
风杯风速计
过高效应
误差分析
沙漠
cup-anemometer, overspeed. error analysis, desert area
