干旱区生态环境知识资源中心(Arid): 金塔绿洲土壤中蒸发/凝结过程的初步分析

Arid

	金塔绿洲土壤中蒸发/凝结过程的初步分析
其他题名	Preliminary Analysis on Evaporation/Condensation Processes of Soil in Jinta Oasis
	韩博; 吕世华; 奥银焕
来源期刊	高原气象
ISSN	1000-0534
出版年	2011
卷号	30 期号:6 页码:1462-1471
中文摘要	利用2005年6月27日~7月4日金塔绿洲地表及0.40m土壤温度观测资料作为边界条件,结合一维土壤热传导方程计算了该时段0.05,0.10和0.20m深处的土壤温度。通过比较同时段观测值与计算值的观测,发现0.05m深处的土壤温度计算值与观测值的差异最大。结果表明,在方程中只需简单考虑浅层土壤蒸发/凝结过程,便可以使模拟结果得到显著改善。金塔绿洲地表能量通量分析表明,08:00~12:00浅层土壤有虚假的热储项;而在12:00~16:00则有偏大的地表潜热通量。这些能量不闭合现象可部分归结为在观测时未充分考虑绿洲浅层土壤蒸发/凝结过程。
英文摘要	Using the surface and 0.40 m depth soil temperature in Jinta oasis as boundary condition,the temperatures at 0.05,0.10 and 0.20 m depthes were calculated by a one dimensional soil thermal diffusion equation.Comparing with the calculated and observed results on these three levels,it was found that the most significant difference between them appeared at 0.05 m level.Then,based on the characteristic of soil water content variability,evaporation and condensation(EC) processes were considered by improving the former thermal diffusion equation,and more realistic results were obtained,which means the EC processes might be important for hydrothermal variability of soil in Jinta oasis.The affection of EC on the surface energy balance were analyzed based on the observation of energy flux in the local surface.Two phenomena were found: Firstly,from 08:00 to 12:00,the shallow soil heat storage was not totally caused by the net radiation,but partly by the vapor condensation there;secondly,the latent heat flux was abnormally large from 12:00 to 16:00,made the surface energy flux unbalanced at that time,which can be explained as the vapor flux from deep soil being wrongly involved into the vapor flux of surface.
中文关键词	金塔绿洲 ; 热传导方程 ; 蒸发/凝结过程 ; 地表能量平衡 ; 土壤热储
英文关键词	Jinta oasis Thermal diffusive equation Evaporation/condensation processes Surface energy balance Soil heat storage
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4409573
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226655
作者单位	中国科学院寒区旱区环境与工程研究所, 中国科学院寒旱区陆面过程与气候变化重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	韩博,吕世华,奥银焕. 金塔绿洲土壤中蒸发/凝结过程的初步分析[J]. 中国科学院西北生态环境资源研究院,2011,30(6):1462-1471.
APA	韩博,吕世华,&奥银焕.(2011).金塔绿洲土壤中蒸发/凝结过程的初步分析.高原气象,30(6),1462-1471.
MLA	韩博,et al."金塔绿洲土壤中蒸发/凝结过程的初步分析".高原气象 30.6(2011):1462-1471.