新余国家气象观测站搬迁后气温差异分析

Analysis of Temperature Difference after the Relocation of Xinyu National Meteorological Observation Station

利用新站与4个参考站的气温要素,比较分析两站之间的差值。结果表明:搬迁前后海拔高度发生变化,年平均差值符合气温直减率规律,可作为长序列观测记录的订正参考;新站气温差异受器差影响极小,但受地形、地貌和下垫面观测环境等因子及天气状况的影响最直接;新站平均气温、最高气温和最低气温比参考站低-1.0℃~-2.0℃的日数最多,最高气温偏低日数最多达328 d,接近全年的90%。

The difference between the two stations is compared and analyzed by using the temperature elements of the new station and the four reference stations. The results show that the altitude changes before and after the relocation, and the annual average difference conforms to the law of temperature drop rate, which can be used as a reference for the correction of long-series observation records;The temperature difference of the new station is very little affected by the device difference, but it is most directly affected by factors such as topography, landform,underlying surface observation environment and weather conditions;The average temperature, maximum temperature and minimum air temperature of the new station are-1.0℃~-2.0℃ lower than those of the reference station, and the number of days with low maximum temperature is up to 328 days,close to 90% of the whole year.