和林格尔县地温变化与气温的关系

利用和林县气象局1960—2008年气温、40、80cm地温月平均数据,降水、日照、积雪月总量数据,对地温与气温的变化关系及其影响因子进行了分析。结果表明,40cm地温与气温有相同的变化趋势,其突变点与气温变化的突变点相同,均为1987年。40cm地温在夏季略受降水的影响,而冬季受积雪的影响较明显。其终年与日照时数相关较弱,说明地-气辐射过程平衡的速度较快,会很快消除掉其他气象因子带来的地温与气温之间差异的阶变。40cm与80cm地温变化的一致度很高,表明80cm很少得到来自地壳内部热量,80cm地温变化的两个异常点分别位于1988年和1990年,处于1987年附近但落后于1987年,说明气候突变会影响到80cm地温变化,但影响滞后。

Relation between the Variation of Ground Temperature and Air Temperature in Helin County

Based on the data of monthly mean air temperature, 40cm ground temperature, 80cm ground tempera- ture and the total quantity data of monthly precipitation, sunshine hours and snow cover, the variation relation and influence factors of air temperature and ground temperature were analyzed. The results showed that air tempera- ture and 40cm ground temperature had similar varying feature, 40 cm ground temperature series had same sudden changing point as air temperature series, occurring in 1987. 40 cm ground temperature was affected by precipita- tion a little but affected by snow cover relatively obviously in winter. It has very low correlativity to the sunshine hours all the year. This attributed to earth-atmosphere radiation process having a relatively high speed to reach balance, which could smooth the jumping variation brought by other meteorology factors. The variation of 80cm soil temperature was highly accordant to the variation of 40cm soil temperature, indicating 80cm soil receiving little heat from earth-crust. 80cm ground temperature series has two abnormal points, which occurred in 1988 and 1990. they were near 1987 but behind it, showing but its variation fall behind the climate change. 80cm soil temperature could affected by climate change.