Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jhydrol.2018.01.058 |
Spatio-temporal variability of evapotranspiration and crop water requirement from space | |
Samuel, Alexander1; Girma, Atkilt2,3,4; Zenebe, Amanuel3,4; Ghebreyohannes, Tesfaalem5 | |
通讯作者 | Samuel, Alexander |
来源期刊 | JOURNAL OF HYDROLOGY |
ISSN | 0022-1694 |
EISSN | 1879-2707 |
出版年 | 2018 |
卷号 | 567页码:732-742 |
英文摘要 | The Surface Energy Balance System (SEBS) algorithm very well captures the spatio-temporal Actual Evapotranspiration (AET) variability, which is relevant to compute Crop Water Requirement (CWR) of commercial farms during the dry season. Considering this, a study was conducted in the arid and semi-arid parts of middle Awash in Ethiopia using reflectance and radiance satellite datasets of both Moderate Resolution Imaging Spectroradiometer (MODIS) and Landsat’s Operational Land Imager (OLI) sensors. The SEBS model e derived AET was compared with the CWR computed from ground (observed) meteorological datasets. The results revealed that the amount of AET over the study area was dependent on temperature, surface radiative property, moisture content and crop development stage. The AET derived from satellite datasets was strongly related to the ground computed CWR over the irrigated sugarcane and cotton fields. The study revealed that the technique could be of great help during irrigation management, water conservation and allocation. Hence, we recommend decision makers of the commercial farms to further explore the use of this technique to properly manage and schedule their irrigation. (C) 2018 Elsevier B.V. All rights reserved. |
英文关键词 | Actual evapotranspiration Crop water requirement MODIS Remote sensing Surface energy balance |
类型 | Article |
语种 | 英语 |
国家 | Ethiopia ; Netherlands |
收录类别 | SCI-E |
WOS记录号 | WOS:000454753900057 |
WOS关键词 | ENERGY BALANCE ALGORITHM ; SYSTEM SEBS ; FLUXES ; SOIL |
WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Engineering ; Geology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/211096 |
作者单位 | 1.Afar Design & Supervis Works Enterprise, Semera, Ethiopia; 2.Univ Twente, ITC Fac, Enschede, Netherlands; 3.Mekelle Univ, Land Resources Management & Environm Protect, Mekelle, Ethiopia; 4.Mekelle Univ, Inst Climate & Soc, Mekelle, Ethiopia; 5.Mekelle Univ, Geog & Environm Studies Dept, Mekelle, Ethiopia |
推荐引用方式 GB/T 7714 | Samuel, Alexander,Girma, Atkilt,Zenebe, Amanuel,et al. Spatio-temporal variability of evapotranspiration and crop water requirement from space[J],2018,567:732-742. |
APA | Samuel, Alexander,Girma, Atkilt,Zenebe, Amanuel,&Ghebreyohannes, Tesfaalem.(2018).Spatio-temporal variability of evapotranspiration and crop water requirement from space.JOURNAL OF HYDROLOGY,567,732-742. |
MLA | Samuel, Alexander,et al."Spatio-temporal variability of evapotranspiration and crop water requirement from space".JOURNAL OF HYDROLOGY 567(2018):732-742. |
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