Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau
文献类型：期刊论文
| 作者 | Wang Li-hui; He Xiao-bo; Steiner, Jakob F.; Zhang Dong-wei; Wu Jin-kui; Wang Shao-yong; Ding Yong-jian |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 17期号:12页码:3039-3053 |
| 关键词 | Evapotranspiration Alpine meadow FAO-Penman-Monteith Priestley-Taylor Hargreaves-Samani Rohwer Lysimeter |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-020-6051-1 |
| 英文摘要 | Evapotrantaspiration is a crucial part of the hydrological cycle but few ground observatories for the Tibetan Plateau exist. In this study, we present lysimeter measurements from the growing season during seven years at a remote field location on the Tibetan Plateau. The measurements show rates between 2.5 and 3 mm center dot d(-1) during the warmer months from June to August, dropping to 2 to 2.5 mm center dot d(-1) in September. This results in a total volume of evapotranspiration of approximately 300 mm center dot yr(-1) for the months from June to September. The inter-daily variability is however large, and comparison to meteorological variables suggest that this is largely driven by radiation and humidity. Data for a single season from a nearby flux tower allows us to compare the two common measurement methods for evapotranspiration in the field, showing an overall good agreement between the approaches. We also tested commonly applied models used to estimate evapotranspiration rates, namely the FAO-Penman-Monteith (PM) and the Priestly-Taylor (PT) model, which both make use of radiation data as well as the simpler Hargreaves-Samani (HS) and Rohwer (R) models which only need air temperature and wind speed as input. The most data intensive model (PM) has the lowest root mean square error (RMSE) (1.36 mm center dot d(-1)) and the mean bias error (MBE) (-0.05 mm center dot d(-1)) and reproduces the daily variability generally well. The much simpler HS model performs slightly worse (1.38 and 0.35 mm-d(-1)), but fails to reproduce the variability, due to its lack of information of local radiation and humidity data. Our results are in line with large scale estimates of evapotranspiration for the cold and arid region, provide a first long time series of in-situ measurements from a high elevation site and suggest that both the PM and HS models are appropriate when no direct measurements are available. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/57078]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.12 |
| 推荐引用方式 GB/T 7714 | Wang Li-hui,He Xiao-bo,Steiner, Jakob F.,et al. Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(12):3039-3053. |
| APA | Wang Li-hui.,He Xiao-bo.,Steiner, Jakob F..,Zhang Dong-wei.,Wu Jin-kui.,...&Ding Yong-jian.(2020).Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau.JOURNAL OF MOUNTAIN SCIENCE,17(12),3039-3053. |
| MLA | Wang Li-hui,et al."Models and measurements of seven years of evapotranspiration on a high elevation site on the Central Tibetan Plateau".JOURNAL OF MOUNTAIN SCIENCE 17.12(2020):3039-3053. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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