Intercomparison and evaluation of three global high-resolution evapotranspiration products across China
文献类型：期刊论文
| 作者 | Bai, Peng; Liu, Xiaomang |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 566页码:743-755 |
| 关键词 | Evapotranspiration Assessment Uncertainty Water balance China |
| ISSN号 | 0022-1694 |
| DOI | 10.1016/j.jhydrol.2018.09.065 |
| 通讯作者 | Bai, Peng(baip@igsnrr.ac.cn) ; Liu, Xiaomang(liaoxfxm@163.com) |
| 英文摘要 | Accurate quantification of large-scale evapotranspiration (ET) has an important scientific and practical significance. In this study, three global high-resolution ET products were intercompared and evaluated across China; the evaluated ET products were the Global Land Evaporation Amsterdam Model (GLEAM) version 3.2, the Global Land Data Assimilation System (GLDAS) version 2.0 Catchment Land Surface Model (CLSM) dataset, and the Numerical Terradynamic Simulation Group (NTSG) dataset. The evaluations were performed at the site scale with eddy covariance (EC) based observations from eight flux stations, and at the basin scale with water balance-based ET estimates from 22 river basins in China. The intercomparison results indicated that the three products consistently presented an increasing trend over a large proportion of China but large differences in the trend of the annual ET and the mean annual ET estimates. The trends of the annual ET estimates derived from the GLEAM, GLDAS, and NTSG products are 0.449, 0.904 and 1.261 mm/yr(2), respectively; the countrywide mean annual ET derived from the three products are 390.2, 443.4 and 419.9 mm/yr, respectively. The site-scale evaluation results indicated that the GLEAM and NTSG products achieved comparable consistencies with the monthly gauge observations and outperformed the GLDAS product; GLEAM was more consistent with the daily gauge observations than GLDAS. At the basin scale, all three products were unable to reasonably reproduce the water balance-based annual ET time series in most basins; the three products systematically overestimated ET in the wet basins compared with the water balance-based ET estimates. The differences in the ET estimates among the ET products may be largely attributed to the discrepancies in the forcing data and model algorithms. |
| WOS关键词 | BASIN-SCALE EVAPOTRANSPIRATION ; WATER-BALANCE METHOD ; TERRESTRIAL EVAPOTRANSPIRATION ; LAND EVAPOTRANSPIRATION ; GRACE SATELLITES ; EVAPORATION ; CLIMATE ; PERFORMANCE ; MODEL ; MODIS |
| 资助项目 | Natural Science Foundation of China[41330529] ; Natural Science Foundation of China[41601034] ; Natural Science Foundation of China[41571024] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000449901100056 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/52454]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Bai, Peng; Liu, Xiaomang |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Peng,Liu, Xiaomang. Intercomparison and evaluation of three global high-resolution evapotranspiration products across China[J]. JOURNAL OF HYDROLOGY,2018,566:743-755. |
| APA | Bai, Peng,&Liu, Xiaomang.(2018).Intercomparison and evaluation of three global high-resolution evapotranspiration products across China.JOURNAL OF HYDROLOGY,566,743-755. |
| MLA | Bai, Peng,et al."Intercomparison and evaluation of three global high-resolution evapotranspiration products across China".JOURNAL OF HYDROLOGY 566(2018):743-755. |
入库方式： OAI收割
来源：地理科学与资源研究所
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