the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Evaluation of a complementary based model for mapping land surface evapotranspiration
Abstract. A modified Priestley-Taylor (P-T) equation was proposed by Venturini et al. (2008) to map actual evapotranspiration (ET) based solely on satellite remote sensing data, involving a parameter based on a scaled temperature between dew point temperature and surface temperature. In this study, however, theoretical analyses and field experimental evidence show that it is hard to obtain this scaled temperature using dew point temperature and surface temperature. This study also presents a new parameterization method using air temperature, surface temperature, and surface temperature of a reference dry surface. The actual ET estimates obtained by means of our proposed parameterization method are validated at a site scale, and a case study is conducted to map actual ET from Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) images using our proposed method. Results of ground-based validation and a case study of mapping ET using ASTER images indicate that the improvement on the modified P-T equation proposed by Venturini et al. (2008) can contribute to generating reliable actual ET.
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RC C1344: 'Review', Anonymous Referee #1, 08 May 2012
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AC C3543: 'Responses to Referee 1', Zhigang Sun, 06 Aug 2012
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AC C3543: 'Responses to Referee 1', Zhigang Sun, 06 Aug 2012
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RC C3140: 'Referee Comment', Anonymous Referee #2, 18 Jul 2012
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AC C3544: 'Responses to Referee 2', Zhigang Sun, 06 Aug 2012
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AC C3544: 'Responses to Referee 2', Zhigang Sun, 06 Aug 2012
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EC C3147: 'Editor Comment', Sally Thompson, 18 Jul 2012
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AC C3545: 'Responses to Editor', Zhigang Sun, 06 Aug 2012
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AC C3545: 'Responses to Editor', Zhigang Sun, 06 Aug 2012
![Printer-friendly Version](https://www.hydrology-and-earth-system-sciences.net/print.gif)
![Supplement](https://www.hydrology-and-earth-system-sciences.net/supplement.gif)
-
RC C1344: 'Review', Anonymous Referee #1, 08 May 2012
-
AC C3543: 'Responses to Referee 1', Zhigang Sun, 06 Aug 2012
-
AC C3543: 'Responses to Referee 1', Zhigang Sun, 06 Aug 2012
-
RC C3140: 'Referee Comment', Anonymous Referee #2, 18 Jul 2012
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AC C3544: 'Responses to Referee 2', Zhigang Sun, 06 Aug 2012
-
AC C3544: 'Responses to Referee 2', Zhigang Sun, 06 Aug 2012
-
EC C3147: 'Editor Comment', Sally Thompson, 18 Jul 2012
-
AC C3545: 'Responses to Editor', Zhigang Sun, 06 Aug 2012
-
AC C3545: 'Responses to Editor', Zhigang Sun, 06 Aug 2012
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