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DOI | 10.1002/joc.5205 |
Impact of ET0 method on the simulation of historical and future crop yields: a case study of millet growth in Senegal | |
Ramarohetra, Johanna1; Sultan, Benjamin2 | |
2018-02-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:2页码:729-741 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | The reference evapotranspiration (ET0) is an integrated climatic variable from which many crop models derive simulated crop yields. In most of these models, different equations are parameterized leaving the choice of the equation to the user. However, the impact of the choice of the ET0 equations on crop yield prediction has been little studied. The present study proposes a sensitivity analysis of the impact of the choice of the ET0 equation on simulated millet yields using SARRA-H crop model over 12 Senegalese stations representative of the Sudano-Sahelian climate conditions of West Africa. Priestley-Taylor, a modified Priestley-Taylor and Hargreaves equations lead to simulated yields up to 19% than those calculated using the Penman-Monteith equation. Despite high biases in wind speed, among the tested methods, the Penman-Monteith method remains the most robust to derive ET0 and yield over the major part of Senegal, Hargreaves equation being more appropriated under dry climates. The choice of ET0 formulation introduces uncertainties representing 8% of baseline yield regardless of precipitation changes; for wet conditions these uncertainties approach 30% of the overall climate change impact. The choice of ET0 equation is increasingly important, with local temperature changes out to 4 degrees C, while extreme changes above 6 degrees C depend less on the ET0 equation. |
英文关键词 | evapotranspiration climate change West Africa crop model modelling uncertainties ET0 |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423816900015 |
WOS关键词 | CLIMATE-CHANGE ; POTENTIAL EVAPOTRANSPIRATION ; MODEL ; VARIABILITY ; EVAPORATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/37081 |
专题 | 气候变化 |
作者单位 | 1.ECOCLIMASOL, Montpellier, France; 2.UPMC Univ Paris 06, Sorbonne Univ, LOCEAN Lab, CNRS,IRD,MNHN, Paris, France |
推荐引用方式 GB/T 7714 | Ramarohetra, Johanna,Sultan, Benjamin. Impact of ET0 method on the simulation of historical and future crop yields: a case study of millet growth in Senegal[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(2):729-741. |
APA | Ramarohetra, Johanna,&Sultan, Benjamin.(2018).Impact of ET0 method on the simulation of historical and future crop yields: a case study of millet growth in Senegal.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(2),729-741. |
MLA | Ramarohetra, Johanna,et al."Impact of ET0 method on the simulation of historical and future crop yields: a case study of millet growth in Senegal".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.2(2018):729-741. |
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