干旱区生态环境知识资源中心(Arid): 遥感估算绿洲-沙漠下垫面地表温度及感热通量

Arid

	遥感估算绿洲-沙漠下垫面地表温度及感热通量
其他题名	Land Surface Temperature and Sensible Heat Flux Estimated from Remote Sensing over Oasis and Desert
	王丽娟; 左洪超; 陈继伟; 董龙翔; 赵静
来源期刊	高原气象
ISSN	1000-0534
出版年	2012
卷号	31 期号:3 页码:646-656
中文摘要	利用古浪非均匀近地层野外观测试验资料,验证了卫星反演地表温度的局地分裂窗算法在非均匀地区的适用性,进一步给出了提高反演精度的修正方案,并利用修正的反演地表温度算法和改进的空气动力学阻抗算法反演了试验区的感热通量。结果表明,Becker算法最适用于非均匀地区。与近地层野外观测试验观测结果相比,修正后的反演算法反演的地表温度和感热通量更加合理,均方根误差分别为2.38K和23.49W·m~(-2)。地表温度和感热通量的区域分布特征相似,都表现为在绿洲和沙漠区的变化梯度较小,而在过渡区的梯度较大。
英文摘要	Using the Gulang Heterogeneous Underlying Surface Layer Experiment(GHUSLE) data,the applicability of local split-window algorithms in the heterogeneous underlying surface are verified,and further the modified algorithms are provided to improve the retrieval accuracy.The sensible heat flux in the experiment area is retrieved by using the modified local split-window algorithm and the improved aerodynamics resistance algorithm.The results show that the Becker algorithm is the best one for retrieving the land surface temperature(LST) in the heterogeneous underlying surface.Comparing with the observed data,the LST and sensible heat flux obtained by the modified algorithms are more reasonable,and the root mean square errors are 2.38 K and 23.49 W·m~(-2).The regional distribution characteristics of the LST and sensible heat flux are similar which are expressed as: The change gradients of LST and sensible heat flux in the oasis and desert regions are smaller than those in the transition region.
中文关键词	卫星反演 ; 局地分裂窗算法 ; 空气动力学阻抗 ; 感热通量
英文关键词	Satellite retrieval Local split-window algorithm Aerodynamic resistance Sensible heat flux
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:4573405
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/2XILL650/228164
作者单位	兰州大学大气科学学院, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	王丽娟,左洪超,陈继伟,等. 遥感估算绿洲-沙漠下垫面地表温度及感热通量[J]. 兰州大学,2012,31(3):646-656.
APA	王丽娟,左洪超,陈继伟,董龙翔,&赵静.(2012).遥感估算绿洲-沙漠下垫面地表温度及感热通量.高原气象,31(3),646-656.
MLA	王丽娟,et al."遥感估算绿洲-沙漠下垫面地表温度及感热通量".高原气象 31.3(2012):646-656.