Next Article in Journal / Special Issue
Can Satellite-derived Chlorophyll Imagery Be Used to Trace Surface Dynamics in Coastal Zone? A Case Study in the Northwestern Mediterranean Sea
Previous Article in Journal
Recent Development in Optical Fiber Biosensors
Sensors 2007, 7(6), 860-883; doi:10.3390/s7060860
Article

Comparison of Three Operative Models for Estimating the Surface Water Deficit Using ASTER Reflective and Thermal Data

1,* , 2
, 1
, 1
 and 1
Received: 5 April 2007; Accepted: 4 June 2007 / Published: 6 June 2007
(This article belongs to the Special Issue Remote Sensing of Natural Resources and the Environment)
View Full-Text   |   Download PDF [2633 KB, uploaded 21 June 2014]   |   Browse Figures
Abstract: Three operative models with minimum input data requirements for estimatingthe partition of available surface energy into sensible and latent heat flux using ASTERdata have been evaluated in a semiarid area in SE Spain. The non-evaporative fraction(NEF) is proposed as an indicator of the surface water deficit. The best results wereachieved with NEF estimated using the “Simplified relationship” for unstable conditions(NEFSeguin) and with the S-SEBI (Simplified Surface Energy Balance Index) modelcorrected for atmospheric conditions (NEFS-SEBIt,) which both produced equivalent results.However, results with a third model, NEFCarlson, that estimates the exchange coefficient forsensible heat transfer from NDVI, were unrealistic for sites with scarce vegetation cover.These results are very promising for an operative monitoring of the surface water deficit,as validation with field data shows reasonable errors, within those reported in the literature(RMSE were 0.18 and 0.11 for the NEF, and 29.12 Wm-2 and 25.97 Wm-2 for sensible heatflux, with the Seguin and S-SEBIt models, respectively).
Keywords: ASTER; evapotranspiration; surface energy balance; semiarid. ASTER; evapotranspiration; surface energy balance; semiarid.
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

García, M.; Villagarcía, L.; Contreras, S.; Domingo, F.; Puigdefábregas, J. Comparison of Three Operative Models for Estimating the Surface Water Deficit Using ASTER Reflective and Thermal Data. Sensors 2007, 7, 860-883.

AMA Style

García M, Villagarcía L, Contreras S, Domingo F, Puigdefábregas J. Comparison of Three Operative Models for Estimating the Surface Water Deficit Using ASTER Reflective and Thermal Data. Sensors. 2007; 7(6):860-883.

Chicago/Turabian Style

García, Mónica; Villagarcía, Luis; Contreras, Sergio; Domingo, Francisco; Puigdefábregas, Juan. 2007. "Comparison of Three Operative Models for Estimating the Surface Water Deficit Using ASTER Reflective and Thermal Data." Sensors 7, no. 6: 860-883.


Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert