DocumentCode :
2141778
Title :
Analysis of the factors influencing surface sensible heat fluxes with large aperture scintillometers
Author :
Huang, Miao-Fen ; Liu, Shao-Min ; Guo, Xiao-Ying ; Zhu, Qi-Jiang ; Li, Jiang-Tao
Author_Institution :
Sch. of Geogr., Beijing Normal Univ.
Volume :
6
fYear :
2004
fDate :
20-24 Sept. 2004
Firstpage :
4281
Abstract :
Large aperture scintillometers (LAS), Bowen ratio, eddy covariance measurements, soil moisture in various depths with measuring masses and routine weather observation such as visibility, cloud, wind speed and weather phenomenon with manual work were employed to study sensible heat flux over homogeneous bare soil surface from March 20th to April 20th, 2002, at XiaoTangshan area, Beijing. The diurnal variation of sensible heat flux from LAS is analyzed in this paper, and the relation between sensible heat flux and weather conditions is discussed. Moreover, the correlation coefficient between LAS based surface sensible heat fluxes and the influencing factors such as soil surface temperature and wind speed were analyzed. The analysis will help us to improve the accurate of LAS measurements. Further, the comparisons of the scintillometer flux measurements with the measurements of Bowen ratio and eddy correlation methods were done in order to make more research on scaling-up of surface sensible heat flux from point to area
Keywords :
atmospheric boundary layer; atmospheric thermodynamics; heat transfer; land surface temperature; meteorology; soil; wind; AD 2002 03 20 to 04 20; Beijing; Bowen ratio; China; LAS; XiaoTangshan; bare soil surface; cloud; correlation coefficient; diurnal variation; eddy covariance measurement; large aperture scintillometer; soil moisture; soil surface temperature; surface sensible heat flux; weather observation; weather phenomenon; wind speed; Apertures; Area measurement; Clouds; Correlation; Moisture measurement; Soil measurements; Soil moisture; Temperature sensors; Velocity measurement; Wind speed;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
Type :
conf
DOI :
10.1109/IGARSS.2004.1370082
Filename :
1370082
Link To Document :
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