Paper Info
Title
Downscaling SMOS derived soil moisture for very wet conditions using a physically based approach
Abstract
A physically based downscaling algorithm, DISPATCH (DISaggregation based on Physical And Theoretical scale CHange), has been used to estimate soil moisture at 1 km scale from coarse resolution SMOS soil moisture estimates over the agricultural site of the CanEx-SM10 campaign. In this paper, we test the applicability of the algorithm and analyze the linearity of the relationship between the soil evaporative efficiency (SEE) and the near-surface soil moisture (SM) for very wet soils. In such conditions, the results show that the linear model is not suitable due to a difficulty in estimating Tsmax (dry edge) within the SMOS pixel. The use of a neighboring area to estimate a reliable value of Tsmax was tested and validated in order to improve the linear model results.
Year
DOI
Venue
2014
10.1109/IGARSS.2014.6947158
Geoscience and Remote Sensing Symposium
Keywords
Field
DocType
evaporation,hydrological techniques,moisture,soil,CanEx-SM10 campaign,DISPATCH downscaling algorithm,SMOS pixel,SMOS soil moisture estimates,Tsmax value,agricultural site,linear model,near-surface soil moisture,physically based approach,soil evaporative efficiency,DISPATCH,SMOS,linear model,nonlinear model,soil moisture
Downscaling,Computer science,Remote sensing,Water content
Conference
ISSN
Citations 
PageRank 
2153-6996
0
0.34
References 
Authors
2
4
Name
Order
Citations
PageRank
Djamai, N.100.34
Magagi, R.2131.45
Goita, K.3302.29
Olivier Merlin414119.31