Comparison of remote sensing-based energy balance methods for estimating crop evapotranspiration

M. P. Gonzalez-Dugo; C. M. U. Neale; L. Mateos; W. P. Kustas; F. Li

doi:10.1117/12.690056

17 October 2006 Comparison of remote sensing-based energy balance methods for estimating crop evapotranspiration

M. P. Gonzalez-Dugo, C. M. U. Neale, L. Mateos, W. P. Kustas, F. Li

Proceedings Volume 6359, Remote Sensing for Agriculture, Ecosystems, and Hydrology VIII; 63590Z (2006) https://doi.org/10.1117/12.690056
Event: SPIE Remote Sensing, 2006, Stockholm, Sweden

Abstract

Remote sensing of evapotranspiration has become more common during the last decade. Two of the approaches being used are the reflectance-based crop coefficient method and the energy balance method. In the energy balance approach, surface temperature is used to calculate sensible heat flux and long wave radiation and depending on the complexity of the model, different methods are used to handle the aerodynamic temperature term. This paper compares two energy balance approaches with different methodology for estimating sensible heat flux (H): (i) one layer energy balance model and (ii) two-layer energy balance model called the Two Source Model. The results from the two approaches are compared using a set of comprehensive field and remote sensing measurements of model input data and actual evapotranspiration measured with a dense network of eddy covariance stations during the SMACEX campaign in central Iowa during the 2002 growing season. Results show that both methods of estimating H perform well using calibrated Landsat Thematic Mapper imagery as remotely sensed inputs.

Citation Download Citation

M. P. Gonzalez-Dugo, C. M. U. Neale, L. Mateos, W. P. Kustas, and F. Li "Comparison of remote sensing-based energy balance methods for estimating crop evapotranspiration", Proc. SPIE 6359, Remote Sensing for Agriculture, Ecosystems, and Hydrology VIII, 63590Z (17 October 2006); https://doi.org/10.1117/12.690056

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available