Revisiting the global distribution of the exponent of the power-function complementary relationship of terrestrial evaporation: Insights from an isenthalpic index
文献类型：期刊论文
| 作者 | Szilagyi, Jozsef; Ma, Ning3; Crago, Richard D. |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 642页码:131864 |
| 关键词 | Complementary relationship Calibration-free estimation of terrestrial evaporation Isenthalpic index |
| DOI | 10.1016/j.jhydrol.2024.131864 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | The complementary relationship (CR) of evaporation is one of widely-used approaches in estimating terrestrial evapration (E). However, the determination of the parameter values in CR-based models remains a difficult task. This is especially true for the new power-function complementary relationship (PCR) model developed recently, in which the key parameter that accounts for the effect of moisture advection over the drying land, b, must be well calibrated with consideration of an approporiate physical basis. Here, by proposing a new isenthalpic index that can be used for determining b directly without resorting to any a priori information of global E, this study found that the resulting b values (median = 1.64, standard deviation = 0.73) are generally smaller and display a narrower range than those reported recently by Kim et al. (2024). When applied with monthly input variables of 124 FLUXNET stations, the gridded b values improve upon E estimates that employ either i) a standard value of b (=2), or; ii) a calibrated value (same for all stations). The global distribution of the gridded b values -in contrast to those obtained by Kim et al. (2024) -aligns with its physical interpretation: low values (1 < b < 2) where the effect of moisture advection is weak (i.e., permanently/periodically wet, humid regions or regions far away from any significant external moisture source) and high ones (b > 2) when strong (i.e., warm arid/semi arid regions near a sea or high mountains of abundant moisture). The gridded b values improve the calibration-free PCR that employs a constant b (=2) and a Priestley-Taylor coefficient linked to the wet-environment air temperature. |
| WOS关键词 | EVAPOTRANSPIRATION ; EQUATION ; WATER |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| WOS记录号 | WOS:001304154100001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/207950]  |
| 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.Crago, Richard D.] Bucknell Univ, Dept Civil & Environm Engn, Lewisburg, PA USA 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 3.Budapest Univ Technol & Econ, Dept Hydraul & Water Resources Engn, Natl Lab Water Sci & Water Secur, Budapest, Hungary |
| 推荐引用方式 GB/T 7714 | Szilagyi, Jozsef,Ma, Ning,Crago, Richard D.. Revisiting the global distribution of the exponent of the power-function complementary relationship of terrestrial evaporation: Insights from an isenthalpic index[J]. JOURNAL OF HYDROLOGY,2024,642:131864. |
| APA | Szilagyi, Jozsef,Ma, Ning,&Crago, Richard D..(2024).Revisiting the global distribution of the exponent of the power-function complementary relationship of terrestrial evaporation: Insights from an isenthalpic index.JOURNAL OF HYDROLOGY,642,131864. |
| MLA | Szilagyi, Jozsef,et al."Revisiting the global distribution of the exponent of the power-function complementary relationship of terrestrial evaporation: Insights from an isenthalpic index".JOURNAL OF HYDROLOGY 642(2024):131864. |
入库方式： OAI收割
来源：地理科学与资源研究所
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