太原草温、地温变化特征分析  

The Analysis of Characteristics of Grass Temperature and Ground Temperature in Taiyuan

作　　者：徐可文[1] 王军平 高亮[1] 

机构地区：[1]山西省观象台,山西太原030006 [2]山西省防雷监测中心,山西太原030002

出　　处：《山西气象》2012年第3期41-44,共4页Shanxi Meteorological Quarterly

摘　　要：通过对太原基准站2009年1月一2010年12月的草温与地温同步观测资料分析，总结出草温与地温在不同季节的气候变化特征，分析了草温与地温的差异，简单阐述了产生不同特征的原因。分析表明，草温年平均值小于地温年平均值，草温各月的年平均值均小于地温；地温极端最高温度高于草温极端最高温度，草温极端最低温度低于地温极端最低温度；草温的平均最高温度在冬、秋季高于地温，草温的平均最低温度全年低于地温；草温在不同季节变化有所差异，在冬季、秋季草温的平均温度的振幅大于地表温度，草温的低温低，高温高；在秋季草温变化与冬季相仿，但幅度略小于冬季；春季、夏季草温与地温对比趋势相同，草温的高温低，低温持平，夏季草温与地温对比，草温的低温略低，高温偏高胜于春季。 草温的日较差常常大于地温的日较差，出现上述差异的主要原因：①传感器安装环境不同。②被测量的介质热容量不同，热容量愈大，物质的温度变化愈小，反之依然。③被测介质吸收到的辐射量、热传导不同。The changing characteristics of grass temperature and ground temperature was summarized in different seasons based on the analysis of synchronous observation data of grass temperature and ground temperature in Taiyuan reference weather station from January 2009 to December 2010. The difference between grass temperature and ground temperature was analyzed and its reason was briefly addressed. The results show that the annual mean value is grass temperature less than ground temperature. The monthly mean value is same as the annual mean value. The maximum ground temperature is higher than the maximum grass temperature. The minimum grass temperature is lower than the minimum ground temperature. Grass temperature daily range is higher than ground temperature, the main reason for these differences： ① sensors was installed in different environments. ② The thermal capacity oi measurement media is different. ③The radiation and heat conduction of the measured media is different.

关 键 词：草温 地温 特征分析 

分 类 号：P423.3[天文地球—大气科学及气象学]