Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024072 |
Quantification and Prediction of Nighttime Evapotranspiration for Two Distinct Grassland Ecosystems | |
Groh, J.1,2; Puetz, T.1; Gerke, H. H.2; Vanderborght, J.1; Vereecken, H.1 | |
2019-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:4页码:2961-2975 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany |
英文摘要 | Evapotranspiration (ET) is, after precipitation, the second largest flux at the land surface in the water cycle and occurs mainly during daytime. Less attention has been given to water fluxes from the land surface into the atmosphere during nighttime (i.e., between sunset and sunrise). The nighttime ET (ETN ) may be estimated based on models that use meteorological data; however, due to missing experimental long-term data, the verification of ETN estimates is limited. In this paper, the amount of ETN for two grassland ecosystems was determined from highly temporally resolved and precise weighing lysimeter data. We found that annual ETN ranged between 3.5% and 9.5% of daytime annual ET (ETD) and occurred mainly during wet soil and canopy surface conditions, which suggests that ETN is largely related to evaporation. ETN was positively correlated with wind speed. Dew formation, ranging from 4.8% to 6.4% of annual precipitation, was in absolute terms larger than ETN. The prediction of ETN with the Penman-Monteith model improved if the aerodynamic and surface resistance parameters were based on vegetation height observations and the nighttime stomatal resistance parameter was assumed to be zero. The occurrence of hot days during the observation period showed to increase average ETN rates. Our results suggest that ETN can be observed with precision weighing lysimeters, was a not negligible component in the water balance of the grassland ecosystems, and thus needs more attention when simulating land surface hydrological processes. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000468597900022 |
WOS关键词 | WATER-USE EFFICIENCY ; BOUNDARY-LAYER ; HEAT WAVES ; SAP FLOW ; STOMATAL CONDUCTANCE ; ALPINE GRASSLAND ; EDDY COVARIANCE ; FILTER ROUTINE ; TRANSPIRATION ; LYSIMETER |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182227 |
专题 | 资源环境科学 |
作者单位 | 1.Forschungszentrum Julich, Inst Bio & Geosci IBG Agrospnere 3, Julich, Germany; 2.Leibniz Ctr Agr Landscape Res ZALF, Res Area Landscape Functioning 1, Working Grp Hydropedol, Muncheberg, Germany |
推荐引用方式 GB/T 7714 | Groh, J.,Puetz, T.,Gerke, H. H.,et al. Quantification and Prediction of Nighttime Evapotranspiration for Two Distinct Grassland Ecosystems[J]. WATER RESOURCES RESEARCH,2019,55(4):2961-2975. |
APA | Groh, J.,Puetz, T.,Gerke, H. H.,Vanderborght, J.,&Vereecken, H..(2019).Quantification and Prediction of Nighttime Evapotranspiration for Two Distinct Grassland Ecosystems.WATER RESOURCES RESEARCH,55(4),2961-2975. |
MLA | Groh, J.,et al."Quantification and Prediction of Nighttime Evapotranspiration for Two Distinct Grassland Ecosystems".WATER RESOURCES RESEARCH 55.4(2019):2961-2975. |
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