河间气象站迁站对比观测数据分析

利用2012年河间国家一般气象站新旧站的气温、相对湿度、风、深层地温等资料,对河间气象站迁站观测数据进行统计对比分析。结果表明,由于所使用仪器设备不同、站址周围环境不同、下垫面性质不同,造成观测数据有一定差异。新旧站月平均气温差值为-0.5～0℃,月平均最高气温差值为-0.4～0.2℃,月平均最低气温差值为-0.8～0℃,月极端最高气温差值为-1.1～0.6℃,月极端最低气温差值为-1.2～0.3℃,年平均气温、年平均最高气温、年平均最低气温新站均低于旧站,年极端最高气温新站高于旧站,年极端最低气温新站低于旧站;新旧站月平均相对湿度差值为2%～6%,月最小相对湿度差值为-4%～5%,年最小相对湿度新旧站相同;新旧站月2 min平均风速差值为-0.1～0.4 m/s,月最大风速差值为-1.2～2.2 m/s,月极大风速差值为-2.0～2.8 m/s,年最大风速新站与旧站基本相同,年极大风速新站比旧站明显偏大;年风向频率新站小于旧站,年最多风向新站为S,旧站为SSW;新旧站40 cm地温月平均差值为-1.1～2.5℃,80 cm地温月平均差值为-2.4～2.1℃,160 cm地温月平均差值为-2.5～2.7℃,320 cm地温月平均差值为-1.6～1.1℃,40、160 cm深层地温年平均温度新站均高于旧站,80、320 cm深层地温年平均温度新站低于旧站。

Analysis on Observation Data in HeJian Weather Station

Using general weather stations data in 2012 Hejian national old station about temperature, relative humidity, wind, deep geothermal, statistical analysis, the results showed that： Due to the use of instruments and equipment, the surrounding environment, nature of the underlying surface, observation data have certain differences. Monthly average temperature difference is -0. 5 -0 ℃, monthly average highest temperature difference is - 0.4 - 0.2, monthly average minimum temperature difference is - 0.8 - 0 ℃, extreme maximum temperature difference of - 1.1 - 0.6 ℃, extreme minimum temperature difference of - 1.2 - 0.3 ℃, annual average temperature, annual mean maximum temperature in new station are lower than the old station, annual mean minimum temperature is slightly lower than the old station. New station extreme maximum temperature is higher than the old station, annual extreme lowest temperature is significantly lower than the old station. Old station monthly aver- age relative humidity difference of 2% -6%, minimum monthly relative humidity difference of -4% -5%, the minimum relative humidity in new station is higher than the old station. Old station in 2 minutes on average wind speed difference is -0.1 -0.4 m/s, monthly maximum wind speed difference is -1.2 -2.2 m/s, monthly maximum wind speed difference is -2.0 -2.8 m/s, annual maximum wind speed railway station and the old station is basically the same, years of extreme wind speed railway station is larger than the old. Years of wind direction frequency is less than the old railway station, the annual maximum wind station is S, the＇old station SSW. Old and new station in 40 centimeters geothermal month average difference of -1.1 -2.5 ℃, and 80 cm geothermal month average difference of -2.4 -2. 1 ℃, and 160 cm geothermal month average difference of - 2.5 - 2.7℃, and 320 cm ground temperature on the average difference is - 1.6 - 1.1 ℃, the 40 and 160 cm deep geo- thermal average annual temperature of new stations are higher than the old station, the 80 and 320 cm deep geothermal average annum tempera- ture of new stations are lower than the old station.