干旱区生态环境知识资源中心(Arid): 干旱区荒漠下垫面能量通量观测误差对能量闭合的影响

Arid

	干旱区荒漠下垫面能量通量观测误差对能量闭合的影响
其他题名	Impact of Observation Error of Desert Underlying Surface Energy Flux on Energy Closure in Arid Area
	杨宾 1; 左洪超 2; 董龙翔 2; 杨海龙 3; 陈伯龙 2; 戴临栋 2
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2018
卷号	35 期号:2 页码:451-460
中文摘要	利用内蒙古微气象观测试验(IM-MmOE)资料,分析干旱区荒漠下垫面近地层能量传输特征,探究观测仪器的一致性问题及其对地表能量平衡的影响。结果表明:干旱区荒漠下垫面的能量传输以感热和地表土壤热通量为主。大多数辐射仪器的观测相关系数大于0.98,地表土壤热通量和感热通量的观测相关系数大于0.97,潜热通量观测相关性最差,为0.92,其中地表土壤热通量、感热通量和潜热通量的均方差分别为14.3 W·m ~(- 2)、8.9 W· m~(- 2)和8.0 W·m~(- 2),各仪器之间观测数据比较一致,观测误差较小。非一致性引起的观测数据偏差直接影响能量闭合率,试验中湍流通量(感热通量和潜热通量之和)的观测偏差造成地表能量闭合率1 %~ 3 %的不确定性,有效能量(净辐射与地表土壤热通量之差,仅考虑地表土壤热通量的观测偏差)造成5 %的不确定性,湍流通量和有效能量两者数据的总偏差造成地表能量闭合率6 %~ 8%的不确定性。
英文摘要	In this paper,the characteristics of the energy transmission near the surface layer over desert substantial underlying surface in arid area were analyzed,the study was carried out with the observation instruments,and the influence of these instruments on the surface energy balance was researched based on the observed data obtained from the Inner Mongolia Micro meteorological Observation Experiment (IM-MmOE). In designing the experiment, the observed inconsistent impact on energy closure was maximized as much as possible. The ideal underlying surface for the observation should be homogeneous,but the actual one was inhomogeneous,so the observation precision of surface energy flux was not reached an ideal level,and the influence of observation errors on the surface energy closure was widely concerned. The results showed that the surface energy transfer in the desert underlying surface in arid area was mainly dominated by sensible heat flux and surface soli heat flux. The observed correlation coefficients of the most radiation instruments were higher than 0.98,the correlation coefficients of observed surface soil heat flux and sensible heat flux were higher than 0.97,and the correlation coefficient of observed latent heat flux was the lowest and only 0.92. The mean squared errors of surface soil heat flux,latent heat flux and sensible heat flux were 14.3 W·m ~(- 2),8.9 W·m ~(- 2) and 8.0 W·m ~(- 2) respectively,the observed data of all the instrument were consistent well,and the observation errors were low. Deviations of the observed data caused by the nonuniformity could affect directly the rate of energy closure,the observed deviations of turbulent flux (the sum of sensible heat flux and latent heat flux) caused an uncertainty of 1% - 3% of the surface energy closure rate,the effective energy (the difference between net radiation and surface soil heat flux,the deviation of observed surface soil heat flux was considered only) brought about an uncertainty of 5%,and the total deviation of the data of turbulent flux and effective energy resulted in an uncertainty of 6% - 8% of surface energy.
中文关键词	能量闭合 ; 能量通量 ; 地表辐射 ; 观测误差 ; 内蒙古 ; 干旱区
英文关键词	energy closure energy flux surface radiation observation error arid area
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:6233759
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/237645
作者单位	1.兰州大学大气科学学院;;63898部队, 半干旱气候变化教育部重点实验室;;, 兰州;;济源, 甘肃;;河南 730000;;459000, 中国; 2.兰州大学大气科学学院, 半干旱气候变化教育部重点实验室, 兰州, 甘肃 730000, 中国; 3.63898部队, 济源, 河南 459000, 中国
推荐引用方式 GB/T 7714	杨宾,左洪超,董龙翔,等. 干旱区荒漠下垫面能量通量观测误差对能量闭合的影响[J]. 兰州大学,2018,35(2):451-460.
APA	杨宾,左洪超,董龙翔,杨海龙,陈伯龙,&戴临栋.(2018).干旱区荒漠下垫面能量通量观测误差对能量闭合的影响.干旱区研究,35(2),451-460.
MLA	杨宾,et al."干旱区荒漠下垫面能量通量观测误差对能量闭合的影响".干旱区研究 35.2(2018):451-460.