Calibration-Free Complementary Relationship Estimates Terrestrial Evapotranspiration Globally
文献类型：期刊论文
| 作者 | Ma, Ning1; Szilagyi, Jozsef2,3; Zhang, Yongqiang1 |
| 刊名 | WATER RESOURCES RESEARCH
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 57期号:9页码:27 |
| 关键词 | evapotranspiration complementary relationship global ET calibration-free model validation spatiotemporal variations |
| ISSN号 | 0043-1397 |
| DOI | 10.1029/2021WR029691 |
| 通讯作者 | Ma, Ning(ningma@igsnrr.ac.cn) ; Zhang, Yongqiang(zhangyq@igsnrr.ac.cn) |
| 英文摘要 | While large-scale terrestrial evapotranspiration (ET) information is essential for our understanding of the Earth's water and energy cycles, substantial differences exist in current global ET products due partly to uncertainties in soil- and vegetation-related parameters and/or precipitation forcing. Here a calibration-free complementary relationship (CR) model, driven purely by routine meteorological forcing (air and dew-point temperature, wind speed, and net radiation), mainly from ERA5, was employed to estimate global ET rates during 1982-2016. Modeled ET agrees favorably with (a) monthly eddy-covariance measurements of 129 global FLUXNET sites, and; (b) water-balance-derived ET of 52 basins at the multiyear mean and annual scales. Additional evaluations demonstrate that the CR is very competitive, in comparison with other 12 widely used global ET products. The 35-years mean global land ET rate from the CR is 500 +/- 6 mm yr(-1) (72.3 +/- 0.9 x 10(3) km(3) yr(-1)) with more than 70% of the land area exhibiting increasing annual ET rates over the study period. Globally, CR ET significantly increased at a rate of 0.31 mm yr(-1) during 1982-2016, suggesting a 2.2% increase in global land ET over last 35 years. Model inter-comparisons indicate that global annual CR ET values and their trend are close to the median of not only the 12 ET products chosen but also that of 20 CMIP6 models. Since this calibration-free CR model requires no precipitation (except in sea-shore deserts for a subsequent ET correction), vegetation or soil data, it could be incorporated into complex hydrological and/or climate models, thereby facilitating large-scale hydrological and climate simulations. |
| WOS关键词 | MODEL INTERCOMPARISON PROJECT ; HYDROLOGICAL CYCLE ; LAND EVAPORATION ; CARBON-DIOXIDE ; WATER-BUDGET ; PRECIPITATION ; SOIL ; EARTH ; FLUX ; PRODUCTS |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0208] ; National Natural Science Foundation of China[41801047] ; National Natural Science Foundation of China[41971032] ; CAS Pioneer Talents Program ; CAS-CSIRO International Cooperation Program ; TKP2020 BME-IKA-ViZ program ; Open Research Fund Program of State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, CAS[SKLCS-OP-2020-11] |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000703704400038 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foundation of China ; CAS Pioneer Talents Program ; CAS-CSIRO International Cooperation Program ; TKP2020 BME-IKA-ViZ program ; Open Research Fund Program of State Key Laboratory of Cryospheric Science, Northwest Institute of Eco-Environment and Resources, CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/167108]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Ma, Ning; Zhang, Yongqiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Budapest Univ Technol & Econ, Dept Hydraul & Water Resources Engn, Budapest, Hungary 3.Univ Nebraska, Sch Nat Resources, Conservat & Survey Div, Lincoln, NE USA |
| 推荐引用方式 GB/T 7714 | Ma, Ning,Szilagyi, Jozsef,Zhang, Yongqiang. Calibration-Free Complementary Relationship Estimates Terrestrial Evapotranspiration Globally[J]. WATER RESOURCES RESEARCH,2021,57(9):27. |
| APA | Ma, Ning,Szilagyi, Jozsef,&Zhang, Yongqiang.(2021).Calibration-Free Complementary Relationship Estimates Terrestrial Evapotranspiration Globally.WATER RESOURCES RESEARCH,57(9),27. |
| MLA | Ma, Ning,et al."Calibration-Free Complementary Relationship Estimates Terrestrial Evapotranspiration Globally".WATER RESOURCES RESEARCH 57.9(2021):27. |
入库方式： OAI收割
来源：地理科学与资源研究所
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