Calculation and Simulation of Evapotranspiration of Applied Water

doi:10.1016/S1671-2927(00)8568

Journal of Integrative Agriculture ›› 2012, Vol. 12 ›› Issue (3): 489-501.DOI: 10.1016/S1671-2927(00)8568

Calculation and Simulation of Evapotranspiration of Applied Water

Richard L Snyder, Morteza Orang, Sara Sarreshteh

1.Department of Land, Air and Water Resources, University of California, Davis, CA 95616, USA
2.School of Environment and Energy, Shenzhen Graduate School, Peking University, Shenzhen 518055, P.R.China
3.Department of Plant Sciences, University of California, Davis, CA 95616, USA
4.California Department of Water Resources, Division of Statewide Integrated Water Management, Water Use and Efficiency, Sacramento,
CA 94236, USA

收稿日期:2011-11-16 出版日期:2012-03-01 发布日期:2012-03-11
通讯作者: Correspondence Shu Geng, Tel: +86-755-26032802, E-mail: sgeng@ucdavis.edu, gengxu@pkusz.edu.cn

Calculation and Simulation of Evapotranspiration of Applied Water

Richard L Snyder, Morteza Orang, Sara Sarreshteh

1.Department of Land, Air and Water Resources, University of California, Davis, CA 95616, USA
2.School of Environment and Energy, Shenzhen Graduate School, Peking University, Shenzhen 518055, P.R.China
3.Department of Plant Sciences, University of California, Davis, CA 95616, USA
4.California Department of Water Resources, Division of Statewide Integrated Water Management, Water Use and Efficiency, Sacramento,
CA 94236, USA

Received:2011-11-16 Online:2012-03-01 Published:2012-03-11
Contact: Correspondence Shu Geng, Tel: +86-755-26032802, E-mail: sgeng@ucdavis.edu, gengxu@pkusz.edu.cn

摘要/Abstract

摘要： The University of California, Davis and the California Department of Water Resources have developed a weather generator application program “SIMETAW” to simulate weather data from climatic records and to estimate reference evapotranspiration (ETo) and crop evapotranspiration (ETc) with the generated simulation data or with observed data. A database of default soil depth and water holding characteristics, effective crop rooting depths, and crop coefficient (Kc) values to convert ETo to ETc are input into the program. After calculating daily ETc, the input and derived data are used to determine effective rainfall and to generate hypothetical irrigation schedules to estimate the seasonal and annual evapotranspiration of applied water (ETaw), where ETaw is the net amount of irrigation water needed to produce a crop. In this paper, we will discuss the simulation model and how it determines ETaw for use in water resources planning.

关键词: weather generator, water balance, crop water requirements, water resource planning, crop coefficient

Abstract: The University of California, Davis and the California Department of Water Resources have developed a weather generator application program “SIMETAW” to simulate weather data from climatic records and to estimate reference evapotranspiration (ETo) and crop evapotranspiration (ETc) with the generated simulation data or with observed data. A database of default soil depth and water holding characteristics, effective crop rooting depths, and crop coefficient (Kc) values to convert ETo to ETc are input into the program. After calculating daily ETc, the input and derived data are used to determine effective rainfall and to generate hypothetical irrigation schedules to estimate the seasonal and annual evapotranspiration of applied water (ETaw), where ETaw is the net amount of irrigation water needed to produce a crop. In this paper, we will discuss the simulation model and how it determines ETaw for use in water resources planning.

Key words: weather generator, water balance, crop water requirements, water resource planning, crop coefficient

Richard L Snyder, Morteza Orang, Sara Sarreshteh. Calculation and Simulation of Evapotranspiration of Applied Water[J]. Journal of Integrative Agriculture, 2012, 12(3): 489-501.

参考文献

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[8]Snyder R L, Bali K, Ventura F, Gomez-MacPherson H. 2000. Estimating evaporation from bare or nearly bare soil. Journal of Irrigation and Drainage Engineering, 126, 399-403.

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Calculation and Simulation of Evapotranspiration of Applied Water

Calculation and Simulation of Evapotranspiration of Applied Water

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