气候变化领域集成服务门户(CCPortal): Using the maximum entropy production approach to integrate energy budget modelling in a hydrological model

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DOI	10.5194/hess-23-3843-2019
	Using the maximum entropy production approach to integrate energy budget modelling in a hydrological model
	Maheu A.; Hajji I.; Anctil F.; Nadeau D.F.; Therrien R.
发表日期	2019
ISSN	1027-5606
起始页码	3843
结束页码	3863
卷号	23 期号:9
英文摘要	Total terrestrial evaporation, also referred to as evapotranspiration, is a key process for understanding the hydrological impacts of climate change given that warmer surface temperatures translate into an increase in the atmospheric evaporative demand. To simulate this flux, many hydrological models rely on the concept of potential evaporation (PET), although large differences have been observed in the response of PET models to climate change. The maximum entropy production (MEP) model of land surface fluxes offers an alternative approach for simulating terrestrial evaporation in a simple way while fulfilling the physical constraint of energy budget closure and providing a distinct estimation of evaporation and transpiration. The objective of this work is to use the MEP model to integrate energy budget modelling within a hydrological model. We coupled the MEP model with HydroGeoSphere (HGS), an integrated surface and subsurface hydrologic model. As a proof of concept, we performed one-dimensional soil column simulations at three sites of the AmeriFlux network. The coupled model (HGS-MEP) produced realistic simulations of soil water content (root-mean-square error - RMSE - between 0.03 and 0.05m3m-3; NSE - Nash-Sutcliffe efficiency - between 0.30 and 0.92) and terrestrial evaporation (RMSE between 0.31 and 0.71mmd-1; NSE between 0.65 and 0.88) under semi-arid, Mediterranean and temperate climates. At the daily timescale, HGS-MEP outperformed the stand-alone HGS model where total terrestrial evaporation is derived from potential evaporation, which we computed using the Penman-Monteith equation, although both models had comparable performance at the half-hourly timescale. This research demonstrated the potential of the MEP model to improve the simulation of total terrestrial evaporation in hydrological models, including for hydrological projections under climate change. © Author(s) 2019.
语种	英语
scopus关键词	Budget control; Climate change; Entropy; Evapotranspiration; Hydrology; Mean square error; Mercury compounds; Soil moisture; Surface measurement; Transpiration; Hydrological impacts; Hydrological modeling; Maximum entropy productions; Penman-Monteith equations; Potential evaporation; Realistic simulation; Root mean square errors; Surface temperatures; Climate models; climate change; energy budget; evaporation; evapotranspiration; hydrological modeling; land surface; modeling; soil column; soil water
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159606
作者单位	Maheu, A., Département des sciences naturelles, Université du Québec en Outaouais, Ripon, QC J0V 1V0, Canada; Hajji, I., Département de génie civil et de génie des eaux, Université Laval, Laval, QC G1V 0A6, Canada; Anctil, F., Département de génie civil et de génie des eaux, Université Laval, Laval, QC G1V 0A6, Canada; Nadeau, D.F., Département de génie civil et de génie des eaux, Université Laval, Laval, QC G1V 0A6, Canada; Therrien, R., Département de géologie et de génie géologique, Université Laval, Laval, QC G1V 0A6, Canada
推荐引用方式 GB/T 7714	Maheu A.,Hajji I.,Anctil F.,et al. Using the maximum entropy production approach to integrate energy budget modelling in a hydrological model[J],2019,23(9).
APA	Maheu A.,Hajji I.,Anctil F.,Nadeau D.F.,&Therrien R..(2019).Using the maximum entropy production approach to integrate energy budget modelling in a hydrological model.Hydrology and Earth System Sciences,23(9).
MLA	Maheu A.,et al."Using the maximum entropy production approach to integrate energy budget modelling in a hydrological model".Hydrology and Earth System Sciences 23.9(2019).