| 夏季晴空金塔绿洲温度场的初步分析 |
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| 引用本文： | 陈世强,吕世华,奥银焕,张宇,李锁锁.夏季晴空金塔绿洲温度场的初步分析[J].中国沙漠,2006,26(5):767-772. |
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| 作者姓名： | 陈世强 吕世华 奥银焕 张宇 李锁锁 |
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| 作者单位： | 中国科学院寒区旱区环境与工程研究所,甘肃省干旱气候变化与减灾重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 国家自然科学基金;中国科学院知识创新工程项目 |
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| 摘 要： | 利用2004年6~8月在甘肃省酒泉金塔地区开展的“绿洲—沙漠能量和水分循环的野外观测试验(JTEX)”的温度场资料,分析了该地区的温度场结构。结果表明:绿洲在白天（夜晚）相比周围环境是冷（暖）中心。沙漠和绿洲的相互影响同沙漠与绿洲的边缘和形状有关。由于各观测点所处的位置和站点的土壤特性不同,地表温度的量值有较大差别,但总体来说,绿洲的地表温度比沙漠的低;土壤温度的垂直变化一直可活跃到大约20 cm深处,40 cm深土壤温度基本无日变化,不同层间的土壤温度在一天内有两次相交。深度越深,出现的时间越靠后,沙漠上出现不同深度间温度交叉的时间比绿洲靠后。沙漠上各层的温度都始终高于绿洲上的,沙漠的日变化也大于绿洲上的。
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| 关 键 词： | 绿洲系统 气温 地表温度 土壤温度 金塔 JTEX野外观测试验 |
| 文章编号： | 1000-694X（2006）05-0767-06 |
| 收稿时间： | 2005-03-24 |
| 修稿时间： | 2005-05-13 |
Preliminary Analysis on Temperature Fields of Jinta Oasis under Clear Sky in Summer |
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| CHEN Shi-qiang,L Shi-hua,AO Yin-hua,ZHANG Yu,LI Suo-suo.Preliminary Analysis on Temperature Fields of Jinta Oasis under Clear Sky in Summer[J].Journal of Desert Research,2006,26(5):767-772. |
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| Authors: | CHEN Shi-qiang L Shi-hua AO Yin-hua ZHANG Yu LI Suo-suo |
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| Institution: | Key Laboratory of Arid Climatic Changing and Reducing Disaster of Gansu Province, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Science,s, Lanzhou 730000, China |
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| Abstract: | Characteristics of the temperature fields observed in the JTEX" field test were analyzed.The results are showed as follows: The cold center and the warm center of oasis formed respectively in daytime and nighttime;The interaction between oasis and desert has relation with their edge and shape;There were obvious difference of ground temperature among the observation stations due to their different sites and soil types.Generally,the ground temperature of oasis was always lower than that of desert in daytime.In oasis,the vertical variation of soil temperature could be active till 20 cm below the surface,and there was no daily variation below 40 cm;The soil temperature of different layers were same twice in one day,the deeper the layer the later the same temperature appeared.For the same two layers,the temperature-being-same in oasis appeared earlier than that in desert.The soil temperature of every layer in desert was always higher than that in oasis,and the daily variation of different layers in desert was more obvious than that in oasis. |
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| Keywords: | oasis system temperature ground temperature soil temperature Jinta oasis JTEX" field test |
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