Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.3390/rs11080892 |
| Uncertainties in Evapotranspiration Estimates over West Africa | |
| Jung, Hahn Chul1,2; Getirana, Augusto1,3; Arsenault, Kristi R.1,4; Holmes, Thomas R. H.1; McNally, Amy1,3 | |
| 通讯作者 | Jung, Hahn Chul |
| 来源期刊 | REMOTE SENSING
 |
| ISSN | 2072-4292 |
| 出版年 | 2019 |
| 卷号 | 11期号:8 |
| 英文摘要 | An evapotranspiration (ET) ensemble composed of 36 land surface model (LSM) experiments and four diagnostic datasets (GLEAM, ALEXI, MOD16, and FLUXNET) is used to investigate uncertainties in ET estimate over five climate regions in West Africa. Diagnostic ET datasets show lower uncertainty estimates and smaller seasonal variations than the LSM-based ET values, particularly in the humid climate regions. Overall, the impact of the choice of LSMs and meteorological forcing datasets on the modeled ET rates increases from north to south. The LSM formulations and parameters have the largest impact on ET in humid regions, contributing to 90% of the ET uncertainty estimates. Precipitation contributes to the ET uncertainty primarily in arid regions. The LSM-based ET estimates are sensitive to the uncertainty of net radiation in arid region and precipitation in humid region. This study serves as support for better determining water availability for agriculture and livelihoods in Africa with earth observations and land surface models. |
| 英文关键词 | evapotranspiration uncertainty land surface model West Africa |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | USA |
| 开放获取类型 | gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000467646800002 |
| WOS关键词 | LAND-SURFACE MODEL ; DATA ASSIMILATION ; SOIL-MOISTURE ; HEAT-FLUX ; WATER ; EVAPORATION ; PRECIPITATION ; SATELLITE ; MULTIYEAR ; PRODUCTS |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/218361 |
| 作者单位 | 1.NASA, Hydrol Sci Lab, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA; 2.Sci Syst & Applicat Inc, Lanham, MD 20706 USA; 3.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, College Pk, MD 20740 USA; 4.Sci Applicat Int Corp, Mclean, VA 22102 USA |
| 推荐引用方式 GB/T 7714 | Jung, Hahn Chul,Getirana, Augusto,Arsenault, Kristi R.,et al. Uncertainties in Evapotranspiration Estimates over West Africa[J],2019,11(8). |
| APA | Jung, Hahn Chul,Getirana, Augusto,Arsenault, Kristi R.,Holmes, Thomas R. H.,&McNally, Amy.(2019).Uncertainties in Evapotranspiration Estimates over West Africa.REMOTE SENSING,11(8). |
| MLA | Jung, Hahn Chul,et al."Uncertainties in Evapotranspiration Estimates over West Africa".REMOTE SENSING 11.8(2019). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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