A new index for land surface inhomogeneity and its impact on sensible heat flux measured by Large Aperture Scintillometer (LAS) over eastern Gansu of Loess Plateau

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	A new index for land surface inhomogeneity and its impact on sensible heat flux measured by Large Aperture Scintillometer (LAS) over eastern Gansu of Loess Plateau
	Hao, XC; Zhang, Q; Yang, ZS
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2016-03
卷号	59 期号:3 页码:816-827
关键词	Large Aperture Scintillometer (LAS) Eddy Covariance System (ECS) Land surface inhomogeneity Surface temperature variability Difference of sensible heat flux
ISSN号	0001-5733
其他题名	陇东黄土高原下垫面不均匀性指标的建立及其对大孔径闪烁仪(LAS)观测感热通量的影响
通讯作者	Hao, XC (reprint author), Northwest Reg Climate Ctr, Lanzhou 730020, Peoples R China. ; Hao, XC (reprint author), CMA, Inst Arid Meteorol, Lanzhou 730020, Peoples R China. ; Hao, XC (reprint author), Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou 730020, Peoples R China. ; Hao, XC (reprint author), CMA, Key Lab Arid Climat Change & Disaster Reduct, Lanzhou 730020, Peoples R China.
中文摘要	目前定量研究下垫面不均匀性对大孔径闪烁仪(LAS)、涡动相关仪(ECS)观测感热通量差异的影响还比较少.本文利用黄土高原庆阳观测站2012年6、7月典型晴天两主风向范围E-SE和SW-W的陆面过程数据,在建立了下垫面不均匀性定量化指标的基础上,分析了下垫面不均匀性与地表温度变率的关系及其对LAS、ECS观测感热通量差异的影响.结果表明:庆阳站下垫面不均匀性大小η和地表温度变率г具有很好的相关性,相关系数达到0.566以上,证明了新建立指标的合理性.下垫面不均匀性大小η和LAS、ECS观测的感热通量差异H_(LAS)-H_(ECS)具有很好的一致性,相关系数达到0.634.下垫面不均匀性对LAS和ECS的感热通量差异影响显著,下垫面越不均匀LAS和ECS测量的感热通量差异越大.对两主风向分别进行分析,在E-SE风向范围η和H_(LAS)-H_(ECS)的相关系数为0.430,H_(LAS)和H_(EC)拟合的线性趋势系数为1.279,在SW-W风向范围η和H_(LAS)-H_(ECS)的相关系数为0.680, H_(LAS)和H_(EC)拟合的线性趋势系数为1.297.下垫面不均匀性的影响程度越大,LAS和ECS观测的感热通量差异越大.
学科主题	Geochemistry & Geophysics
出版地	BEIJING
语种	中文
WOS记录号	WOS:000371754700005
内容类型	期刊论文
源URL	[http://ir.lzu.edu.cn/handle/262010/182658]
专题	大气科学学院_期刊论文
推荐引用方式 GB/T 7714	Hao, XC,Zhang, Q,Yang, ZS. A new index for land surface inhomogeneity and its impact on sensible heat flux measured by Large Aperture Scintillometer (LAS) over eastern Gansu of Loess Plateau[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(3):816-827.
APA	Hao, XC,Zhang, Q,&Yang, ZS.(2016).A new index for land surface inhomogeneity and its impact on sensible heat flux measured by Large Aperture Scintillometer (LAS) over eastern Gansu of Loess Plateau.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(3),816-827.
MLA	Hao, XC,et al."A new index for land surface inhomogeneity and its impact on sensible heat flux measured by Large Aperture Scintillometer (LAS) over eastern Gansu of Loess Plateau".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.3(2016):816-827.