Simulation of evapotranspiration and vadose zone hydrology using limited soil data: A comparison of four computer models

Isa Yunusa; Rhys Whitley; Melanie Zeppel; Derek Eamus

doi:10.1109/ICECS.2009.95

Simulation of evapotranspiration and vadose zone hydrology using limited soil data: A comparison of four computer models

Isa Yunusa^*, Rhys Whitley, Melanie Zeppel, Derek Eamus

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

2 Citations (Scopus)

24 Downloads (Pure)

Abstract

Four ecohydrological models (Mate, SPA, Vadose and WaSim) of differing complexity were compared for their precision in predicting evapotranspiration (ET) and drainage in 2007, when key data needed for quantifying soil parameters were limited. With exception of Mate, the other three predicted annual evapotranspiration within 10% of the measured data; the under-prediction of ET by Mate, which was also the only model not to predict drainage, often resulted in the over-estimation of the amount of water stored in the soil. The other three models all over-predicted drainage, which suggested that our approximations of the soil parameters reduced the water holding capacity, while enhancing the hydraulic conductivity, of the soil. This study demonstrates the significance of precisely quantifying the key soil parameters for the models if other key components, rather than just ET, are of interest. It also shows the potential of these models in providing first approximations of the components of the soil-water balance.

Original language	English
Title of host publication	2nd International Conference on Environmental and Computer Science, ICECS 2009
Place of Publication	Los Alamitos, CA
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	152-155
Number of pages	4
ISBN (Print)	9780769539379
DOIs	https://doi.org/10.1109/ICECS.2009.95
Publication status	Published - 2009
Externally published	Yes
Event	2nd International Conference on Environmental and Computer Science, ICECS 2009 - Dubai, United Arab Emirates Duration: 28 Dec 2009 → 30 Dec 2009

Other

Other	2nd International Conference on Environmental and Computer Science, ICECS 2009
Country/Territory	United Arab Emirates
City	Dubai
Period	28/12/09 → 30/12/09

Bibliographical note

Copyright 2009 IEEE. Reprinted from Proceedings of the second International Conference on Environmental and Computer Science : 28-30 December 2009 : Dubai, UAE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie Universityâ€™s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Keywords

Drainage
Evapotranspiration
Land management
Soil texture
Soil-water

Access to Document

10.1109/ICECS.2009.95

Publisher version (open access).pdfFinal published version, 384 KB

Cite this

Yunusa, I., Whitley, R., Zeppel, M., & Eamus, D. (2009). Simulation of evapotranspiration and vadose zone hydrology using limited soil data: A comparison of four computer models. In 2nd International Conference on Environmental and Computer Science, ICECS 2009 (pp. 152-155). Article 5383535 Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/ICECS.2009.95

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abstract = "Four ecohydrological models (Mate, SPA, Vadose and WaSim) of differing complexity were compared for their precision in predicting evapotranspiration (ET) and drainage in 2007, when key data needed for quantifying soil parameters were limited. With exception of Mate, the other three predicted annual evapotranspiration within 10% of the measured data; the under-prediction of ET by Mate, which was also the only model not to predict drainage, often resulted in the over-estimation of the amount of water stored in the soil. The other three models all over-predicted drainage, which suggested that our approximations of the soil parameters reduced the water holding capacity, while enhancing the hydraulic conductivity, of the soil. This study demonstrates the significance of precisely quantifying the key soil parameters for the models if other key components, rather than just ET, are of interest. It also shows the potential of these models in providing first approximations of the components of the soil-water balance.",

keywords = "Drainage, Evapotranspiration, Land management, Soil texture, Soil-water",

author = "Isa Yunusa and Rhys Whitley and Melanie Zeppel and Derek Eamus",

note = "Copyright 2009 IEEE. Reprinted from Proceedings of the second International Conference on Environmental and Computer Science : 28-30 December 2009 : Dubai, UAE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie University{\^a}€{\texttrademark}s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.; 2nd International Conference on Environmental and Computer Science, ICECS 2009 ; Conference date: 28-12-2009 Through 30-12-2009",

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Yunusa, I, Whitley, R, Zeppel, M & Eamus, D 2009, Simulation of evapotranspiration and vadose zone hydrology using limited soil data: A comparison of four computer models. in 2nd International Conference on Environmental and Computer Science, ICECS 2009., 5383535, Institute of Electrical and Electronics Engineers (IEEE), Los Alamitos, CA, pp. 152-155, 2nd International Conference on Environmental and Computer Science, ICECS 2009, Dubai, United Arab Emirates, 28/12/09. https://doi.org/10.1109/ICECS.2009.95

Simulation of evapotranspiration and vadose zone hydrology using limited soil data: A comparison of four computer models. / Yunusa, Isa; Whitley, Rhys; Zeppel, Melanie et al.
2nd International Conference on Environmental and Computer Science, ICECS 2009. Los Alamitos, CA: Institute of Electrical and Electronics Engineers (IEEE), 2009. p. 152-155 5383535.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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N1 - Copyright 2009 IEEE. Reprinted from Proceedings of the second International Conference on Environmental and Computer Science : 28-30 December 2009 : Dubai, UAE. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of Macquarie Universityâ€™s products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

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N2 - Four ecohydrological models (Mate, SPA, Vadose and WaSim) of differing complexity were compared for their precision in predicting evapotranspiration (ET) and drainage in 2007, when key data needed for quantifying soil parameters were limited. With exception of Mate, the other three predicted annual evapotranspiration within 10% of the measured data; the under-prediction of ET by Mate, which was also the only model not to predict drainage, often resulted in the over-estimation of the amount of water stored in the soil. The other three models all over-predicted drainage, which suggested that our approximations of the soil parameters reduced the water holding capacity, while enhancing the hydraulic conductivity, of the soil. This study demonstrates the significance of precisely quantifying the key soil parameters for the models if other key components, rather than just ET, are of interest. It also shows the potential of these models in providing first approximations of the components of the soil-water balance.

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M3 - Conference proceeding contribution

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SN - 9780769539379

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BT - 2nd International Conference on Environmental and Computer Science, ICECS 2009

PB - Institute of Electrical and Electronics Engineers (IEEE)

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ER -

Yunusa I, Whitley R, Zeppel M, Eamus D. Simulation of evapotranspiration and vadose zone hydrology using limited soil data: A comparison of four computer models. In 2nd International Conference on Environmental and Computer Science, ICECS 2009. Los Alamitos, CA: Institute of Electrical and Electronics Engineers (IEEE). 2009. p. 152-155. 5383535 doi: 10.1109/ICECS.2009.95

Simulation of evapotranspiration and vadose zone hydrology using limited soil data: A comparison of four computer models

Abstract

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