NDLI: Variability of soil moisture and its relationship with surface albedo and soil thermal parameters over the Loess Plateau

Content Provider	Springer Nature Link
Author	Guan, Xiaodan Huang, Jianping Guo, Ni Bi, Jianrong Wang, Guoyin
Copyright Year	2009
Abstract	Data from July 2006 to June 2008 observed at SACOL (Semi-Arid Climate and Environment Observatory of Lanzhou University, 35.946°N, 104.137°E, elev. 1961 m), a semi-arid site in Northwest China, are used to study seasonal variability of soil moisture, along with surface albedo and other soil thermal parameters, such as heat capacity, thermal conductivity and thermal diffusivity, and their relationships to soil moisture content. The results indicate that surface albedo decreases with increases in soil moisture content, showing a typical exponential relation between the surface albedo and the soil moisture. The heat capacity, the soil thermal diffusivity, and soil thermal conductivity show large variations between Julian day 90–212 and 450–578. The soil thermal conductivity is found to increase as a power function of soil moisture. Soil heat capacity and soil thermal diffusivity increase with increases in soil moisture. The SACOL observed soil moisture are also used to validate the AMSR-E/AQUA retrieved soil moisture and there is good agreement between them. The analysis of the relationship between satellite retrieved soil moisture and precipitation suggests that the variability of soil moisture depends on the variation of precipitation over the Loess Plateau.
Starting Page	692
Ending Page	700
Page Count	9
File Format	PDF
ISSN	02561530
Journal	Advances in Atmospheric Sciences
Volume Number	26
Issue Number	4
e-ISSN	18619533
Language	English
Publisher	SP Science Press
Publisher Date	2009-07-07
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	soil moisture surface albedo soil heat capacity soil thermal conductivity soil thermal diffusivity AMSR-E soil moisture product Loess Plateau Geophysics/Geodesy Meteorology/Climatology
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

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Variability of Soil Moisture and Its Relationship with Surface Albedo and Soil Thermal Parameters over the Loess Plateau (2009)

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