DOI: 10.5194/hess-19-2017-2015
Scopus记录号: 2-s2.0-84928737287
论文题名: Inter-comparison of energy balance and hydrological models for land surface energy flux estimation over a whole river catchment
作者: Guzinski R ; , Nieto H ; , Stisen S ; , Fensholt R
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2015
卷: 19, 期: 4 起始页码: 2017
结束页码: 2036
语种: 英语
Scopus关键词: Atmospheric temperature
; Budget control
; Catchments
; Climate models
; Energy balance
; Heat flux
; Hydrology
; Interfacial energy
; Runoff
; Soil moisture
; Surface measurement
; Distributed hydrological model
; Energy balance models
; Hydrological modelling
; Land surface energy fluxes
; Land surface temperature
; Meteorological measurements
; Remote sensing models
; Remotely-sensed observations
; Remote sensing
; catchment
; energy balance
; energy flux
; estimation method
; evapotranspiration
; heat flux
; hydrological modeling
; land surface
; remote sensing
; river flow
; satellite imagery
; time series
; Denmark
; Midtjylland
; Skjern River
英文摘要: Evapotranspiration (ET) is the main link between the natural water cycle and the land surface energy budget. Therefore water-balance and energy-balance approaches are two of the main methodologies for modelling this process. The water-balance approach is usually implemented as a complex, distributed hydrological model, while the energy-balance approach is often used with remotely sensed observations of, for example, the land surface temperature (LST) and the state of the vegetation. In this study we compare the catchment-scale output of two remote sensing models based on the two-source energy-balance (TSEB) scheme, against a hydrological model, MIKE SHE, calibrated over the Skjern river catchment in western Denmark. The three models utilize different primary inputs to estimate ET (LST from different satellites in the case of remote sensing models and modelled soil moisture and heat flux in the case of the MIKE SHE ET module). However, all three of them use the same ancillary data (meteorological measurements, land cover type and leaf area index, etc.) and produce output at similar spatial resolution (1 km for the TSEB models, 500 m for MIKE SHE). The comparison is performed on the spatial patterns of the fluxes present within the catchment area as well as on temporal patterns on the whole catchment scale in 8-year long time series. The results show that the spatial patterns of latent heat flux produced by the remote sensing models are more similar to each other than to the fluxes produced by MIKE SHE. The temporal patterns produced by the remote sensing and hydrological models are quite highly correlated (r ≈ 0.8). This indicates potential benefits to the hydrological modelling community of integrating spatial information derived through remote sensing methodology (contained in the ET maps derived with the energy-balance models, satellite based LST or another source) into the hydrological models. How this could be achieved and how to evaluate the improvements, or lack of thereof, is still an open research question. © Author(s) 2015. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78538
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, Copenhagen, Denmark; DHI GRAS, Agern Allé5, Hørsholm, Denmark; Institute for Sustainable Agriculture (IAS), Spanish Research Council (CSIC), Campus Alameda Del Obispo, Córdoba, Spain; Geological Survey of Denmark and Greenland, Øster Voldgade 10, Copenhagen, Denmark
Recommended Citation:
Guzinski R,, Nieto H,, Stisen S,et al. Inter-comparison of energy balance and hydrological models for land surface energy flux estimation over a whole river catchment[J]. Hydrology and Earth System Sciences,2015-01-01,19(4)