人工站与自动站风的自动观测资料差异分析

Difference of Observational Wind Data between Artificial Stations and Automatic Weather Stations

通过对侧风仪的构造及采集方法的差异分析,采用广西2004～2008年4个基准气候观测站人工站与自动站风的同步自动观测资料作对比分析,分析结果表明:人工站与自动站风的自动观测资料存在差异。短时风人工站与自动站差异比较大,平均风时间越长风速差异率就减少,风向相符率越大。风大时,人工站的观测数据比自动站大;10分钟平均风向风速人工站与自动站比较接近;极大风风速一致率及风向相符率比较低,说明瞬时风人工站与自动站差异最大。差异的原因主要是观测仪器制作材料不相同及观测方法不一致所造成。

Based on the differences of wind instrument structures and collection methods,the observational wind data between artificial stations and automatic weather stations（aws）in Guangxi four National climatological stations from 2004 to 2008 were comparative analyzed.The results show that： there are difference between wind data of artificial stations and that of aws,especially for the short wind.The longer of the mean wind,the less wind speed difference.The wind observational data of artificial stations are larger than that of the aws in case of wind speed is large,while for 10-minute mean wind,values are close to each other.The match rate of maximum winds is relatively low,indicating that the instantaneous wind data of artificial stations and aws have the biggest difference,which as a result of different observation instruments materials and different observational methods.