【作者】 张翠华； 张文煜； 侯晓玮； 韩军彩；

【Author】 Zhang Cuihua 1,2 Zhang Wenyu 2 Hou Xiaowei 1 Han Juncai 1(1 Shijiazhuang Meteorological Bureau of Hebei Province 050081;2 College of Atmospheric Sciences,Lanzhou University 730000)

【机构】 石家庄市气象局； 兰州大学大气科学学院；

【摘要】 本文利用石家庄地区5个观测站1981年～2010年逐日浅层地温观测数据,分析讨论了该地区浅层地温的变化特征及其变化周期。结果表明:从波动变化情况看,年和各季节平均5cm地温波动变率最大,平均20cm地温波动变率最小,平均浅层地温波动变率春季最大,冬季最小,其中,夏季平均浅层地温波动幅度随土层深度加深依次减小,减小程度随土层深度加深依次减弱;从垂直变化情况看,年平均浅层地温随土层深度加深依次升高,春、夏季随土层深度加深依次降低,秋、冬季随土层深度加深依次升高;从变化趋势情况看,年平均浅层地温均呈现增温趋势,其中,冬季增温最为显著,增温幅度随土层深度加深依次减小,减小程度随土层深度加深依次减弱;平均浅层地温存在9～10a的低频振荡周期和4～6a的高频振荡周期,其中,平均5cm地温低频振荡周期振幅最大,平均10cm地温高频振荡周期振幅最小。更多还原

【Abstract】 Based on the daily ground temperature observation data of 5 stations in Shijiazhuang from 1981 to 2010,variational characteristics and period of mean shallow layer ground temperature were analyzed.The results show that,fluctuant variability of mean 5 deep ground temperature was maximal and fluctuant variability of mean 10 deep ground temperature was minimal and fluctuant variability of mean shallow layer ground temperature was maximal in spring and minimal in winter,and fluctuant range of mean shallow layer ground temperature was smaller and the extent was weaker with soil layer being deeper in summer from fluctuant change;mean shallow layer ground temperature was higher annually and was lower in spring and summer and was higher in autumn and winter with soil layer being deeper from vertical variation;mean shallow layer ground temperature had a warming trend with a obvious warming trend occurring in winter and warming range in winter was smaller and the extent was weaker with soil layer being deeper from variation trend;mean shallow layer ground temperature had a 9～10 lows and a 4～6 high frequency oscillation period with lows oscillation period of mean 5 deep ground temperature being maximal and high frequency oscillation period of mean 10 deep ground temperature being maximal.更多还原