济南市济阳区近14年深层地温变化特征分析

Analysis on the characteristics of the change of the ground temperature in the Jinyang area of Jinan city in the last 14 years

利用济南市济阳区2005—2018年国家一般气象站0.8、1.6、3.2 m逐月平均地温资料,分析了近14年济阳区深层平均地温的变化趋势及其与气温、浅层地温、降水、风速的关系。结果表明,近l4年济阳区0.8、1.6、3.2 m层年、季、月平均地温呈明显上升趋势;年代际变化上,2005—2012年逐年深层平均地温均低于14年平均值,属于地温偏低期,2013—2018年逐年深层平均地温均高于14年平均值,属于地温偏高期。气温是影响深层地温变化的重要因子,年平均气温高的年份深层地温也高。浅层地温与深层地温的年变化趋势在时间尺度上保持高度的一致性。降水和平均风速对地温变化也有一定的影响,深层地温最低的年份出现年降水量第三大值和年平均风速最大值。

Based on the monthly mean ground temperature data of 0.8,1.6 and 3.2 m from 2005 to 2018 in Jiyang national general meteorological station,the variation trend of deep mean ground temperature and its relationship with temperature,shallow ground temperature,precipitation and wind speed in recent 14 years are analyzed.The results show that the annual,seasonal and monthly average ground temperature of 0.8,1.6 and 3.2 m layers in Jiyang district has an obvious upward trend in recent 14 years.In terms of interdecadal change,the annual average ground temperature of deep layer is lower than the average value of 14 years in 2005—2012,which belongs to the period of low ground temperature.The annual value of2013—2018 is higher than the average value of 14 years,which belongs to the period of high ground temperature.Temperature is an important factor affecting the change of deep ground temperature,and the annual average temperature is high.The annual change trend of shallow ground temperature and deep ground temperature maintains a high degree of consistency on the time scale.Precipitation and average wind speed also have some influence on the change of ground temperature,and in the year with the lowest deep ground temperature,the third maximum annual precipitation and the maximum annual average wind speed are the highest.