河间气象站平行观测数据对比分析

Contrastive Analysis of Parallel Observation Data in Hejian Weather Station

利用2009年1月～2010年12月河间自动气象站和人工观测的气压、气温、相对湿度资料,对其资料进行统计对比分析并探讨两者差值的形成原因。结果表明,自动站与人工观测值月平均气压差值为-0.2～0.3 hPa,月平均最高气压差值为0～0.5 hPa,月平均最低气压差值为-0.4～0.3 hPa,月极端最高气压差值为-0.2～0.9 hPa,月极端最低气压差值为-0.6～0.6 hPa;月平均气温差值为0～0.2℃,月平均最高气温差值为0～0.2℃,月平均最低气温差值为-0.1～0.4℃,月极端最高气温差值为-0.2～0.6℃,月极端最低气温差值为-0.3～0.6℃;月平均相对湿度差值为-3%～3%,月最小相对湿度差值为-9%～3%。气象要素对比观测差值产生的原因主要有观测仪器和观测原理的差异、数据采集时间与方法不同、感应器安装位置及所处环境不同以及人工干预与观测误差等主观因素。

The statistical and contrast analysis were conducted on pressure,temperature and relative humidity data of the automatic weather station and artificial observatory in Hejian during Jan.2009-Dec.2010,the causes for the difference were also explored.The results showed that monthly average barometric pressure difference between automatic observation and artificial observation is-0.2-0.3 hPa,the difference of mean monthly maximum pressure is 0.0-0.5 hPa,the difference of monthly minimum pressure is-0.4-0.3 hPa,the difference of monthly maximum pressure is-0.2-0.9 hPa,the difference of monthly minimum pressure is-0.6-0.6 hPa;The difference of monthly mean temperature is 0.0-0.2 ℃,mean monthly maximum temperature is 0.0-0.2 ℃,the difference of monthly average minimum temperature is-0.1-0.4 ℃,the difference of monthly maximum temperature is-0.2-0.6 ℃,the difference of monthly minimum temperature is-0.3-0.6 ℃.The difference of monthly mean relative humidity is-3%-3%,the difference of monthly minimum relative humidity is 9%-3%.Meteorological observational comparison difference reasons are mainly： the difference principle and instrument between automatic and artificial observation;the time and the method difference in data collection;sensor of the installation position and the different environment;subjective factors about observation error.