Global estimation of terrestrial evapotranspiration based on the atmospheric water balance approach
文献类型：期刊论文
| 作者 | Shang, Shasha1; Ma, Ning2; Zhu, Gaofeng3; Zhang, Kun4; Chen, Huiling5; Zhang, Zhenyu6; Liu, Xiaokang7; Meng, Li1; Wang, Yidong1,7 |
| 刊名 | CLIMATE DYNAMICS
 |
| 出版日期 | 2025 |
| 卷号 | 63期号:1页码:64 |
| 关键词 | Land evapotranspiration Atmospheric water balance Modeling and validations Hydrological cycle |
| ISSN号 | 0930-7575 |
| DOI | 10.1007/s00382-024-07536-0 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Quantifying global terrestrial evapotranspiration (ET) relies on models with different levels of complexity. The water balance method offers a straightforward approach for benchmarking complex ET models, as evidenced by the widely-used terrestrial water-balance-based ET (ETTWB) data. However, deriving ETTWB must rely on ground-observed runoff data, which is not feasible for ungauged or poorly-gauged regions. In this context, the atmospheric water balance (AWB) method offers an alternative for estimating ET, which can be applied to the entire global land area. Nevertheless, the accuracy of the AWB approach in estimating global ET remains poorly understood. In this study, we generated monthly atmospheric water-balance-based ET (ETAWB) globally from 1983 to 2020 at a 0.25 degrees resolution using multi-source data. Validations against the annual ETTWB of 56 large river basins suggest that ETAWB, estimated using the moisture convergence and atmospheric water vapor from the fifth generation of European Center for Medium-Range Weather Forecasts Reanalysis (ERA5) and the precipitation from four observation-based products, is overall accurate. Specifically, the AWB method yields Nash-Sutcliffe efficiency coefficient (NSE), root mean square error (RMSE), and relative bias (RB) of 0.88, 89.5 mm year-1, and 2%, respectively. These statistical metrics indicate that the AWB method is generally on par with current mainstream ET models. However, the AWB approach still has certain challenges in capturing the trend in ET. The ensemble mean ETAWB, estimated using the moisture convergence and atmospheric water vapor from ERA5 and four precipitation datasets, yields a global-averaged value of 619 +/- 8 mm year-1 (excluding Antarctica) and shows an increase of 2.1% from 1983 to 2020, with a trend of 0.35 mm year-1. Tropical regions exhibit pronounced interannual variability in ETAWB due to the internal climate variability influencing precipitation and moisture convergence. The current AWB approach can potentially improve the understanding of regional and global ET processes, as it represents an independent approach to ET estimation, distinct from current remote sensing and land surface models. |
| URL标识 | 查看原文 |
| WOS关键词 | POTENTIAL EVAPOTRANSPIRATION ; RECENT DECLINE ; LAND ; EVAPORATION ; PRECIPITATION ; REANALYSIS ; CLIMATE ; SURFACE ; TEMPERATURE ; CALIBRATION |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001385255500001 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/211372]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Ma, Ning |
| 作者单位 | 1.Tianjin Normal Univ, Tianjin Key Lab Water Resources & Environm, Tianjin, Peoples R China; 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China; 3.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou, Peoples R China; 4.Sun Yat Sen Univ, Sch Geospatial Engn & Sci, Zhuhai, Peoples R China; 5.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua, Peoples R China; 6.Univ Illinois, Inst Sustainabil Energy & Environm, Agroecosystem Sustainabil Ctr, Urbana, IL USA; 7.Tianjin Normal Univ, Sch Geog & Environm Sci, Tianjin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shang, Shasha,Ma, Ning,Zhu, Gaofeng,et al. Global estimation of terrestrial evapotranspiration based on the atmospheric water balance approach[J]. CLIMATE DYNAMICS,2025,63(1):64. |
| APA | Shang, Shasha.,Ma, Ning.,Zhu, Gaofeng.,Zhang, Kun.,Chen, Huiling.,...&Wang, Yidong.(2025).Global estimation of terrestrial evapotranspiration based on the atmospheric water balance approach.CLIMATE DYNAMICS,63(1),64. |
| MLA | Shang, Shasha,et al."Global estimation of terrestrial evapotranspiration based on the atmospheric water balance approach".CLIMATE DYNAMICS 63.1(2025):64. |
入库方式： OAI收割
来源：地理科学与资源研究所
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