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A revised surface resistance parameterisation for estimating latent heat flux from remotely sensed data

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Song Y, Wang JM, Yang K, Ma MG, Li X, Zhang ZH, Wang XF. A revised surface resistance parameterisation for estimating latent heat flux from remotely sensed data. International Journal of Applied Earth Observation and Geoinformation, 2012, 17: 76-84, doi:10.1016/j.jag.2011.10.011.

文献信息
Type Of Reference JOUR
Title A revised surface resistance parameterisation for estimating latent heat flux from remotely sensed data
Authors Song, Yi| Wang, Jiemin| Yang, Kun| Ma, Mingguo| Li, Xin| Zhang, Zhihui| Wang, Xufeng|
Secondary Title International Journal of Applied Earth Observation and Geoinformation
Abstract Estimating evapotranspiration (ET) is required for many environmental studies. Remote sensing provides the ability to spatially map latent heat flux. Many studies have developed approaches to derive spatially distributed surface energy fluxes from various satellite sensors with the help of field observations. In this study, remote-sensing-based λE mapping was conducted using a Landsat Thematic Mapper (TM) image and an Enhanced Thematic Mapper Plus (ETM+) image. The remotely sensed data and field observations employed in this study were obtained from Watershed Allied Telemetry Experimental Research (WATER). A biophysics-based surface resistance model was revised to account for water stress and temperature constraints. The precision of the results was validated using ‘ground truth’ data obtained by eddy covariance (EC) system. Scale effects play an important role, especially for parameter optimisation and validation of the latent heat flux (λE). After considering the footprint of EC, the λE derived from the remote sensing data was comparable to the EC measured value during the satellite's passage. The results showed that the revised surface resistance parameterisation scheme was useful for estimating the latent heat flux over cropland in arid regions.
Date 2012///
Year 2012
DOI 10.1016/j.jag.2011.10.011
Database Provider ScienceDirect
volume 17
Start Page 76
Alternate Title1 International Journal of Applied Earth Observation and Geoinformation
Issn 0303-2434
Url http://www.sciencedirect.com/science/article/pii/S0303243411001541
Access Date 2013/10/04/06:25:26
Keywords Landsat TM and ETM+| latent heat flux| Surface resistance|
file_attachments2 http://www.sciencedirect.com/science/article/pii/S0303243411001541
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