DOI: 10.1002/2013GL058533
论文题名: Importance of temporal variability for hydrological predictions based on the maximum entropy production principle
作者: Westhoff M.C. ; Zehe E. ; Schymanski S.J.
刊名: Geophysical Research Letters
ISSN: 0094-10505
EISSN: 1944-10236
出版年: 2014
卷: 41, 期: 1 起始页码: 67
结束页码: 73
语种: 英语
英文关键词: influence of temporal dynamics
; maximum entropy production
; thermodynamics
Scopus关键词: Gravitational potential
; Hydroclimatic conditions
; Hydrological prediction
; Hydrological system
; Maximum entropy productions
; Temporal dynamics
; Temporal variability
; Vegetation seasonality
; Optimization
; Rain
; Soil moisture
; Thermodynamics
; Entropy
; climate forcing
; hydrological modeling
; maximum entropy analysis
; optical method
; optimization
; rainfall
; soil water
; temporal variation
; weather forecasting
英文摘要: This work builds on earlier work by Kleidon and Schymanski (2008) who explored the use of the maximum entropy production (MEP) principle for modeling hydrological systems. They illustrated that MEP can be used to determine the partitioning of soil water into runoff and evaporation - which determines hydroclimatic conditions around the Globe - by optimizing effective soil and canopy conductances in a way to maximize entropy production by these fluxes. In the present study, we show analytically that under their assumption of constant rainfall, the proposed principle always yields an optimum where the two conductances are equal, irrespective of rainfall rate, evaporative demand, or gravitational potential. Subsequently, we show that under periodic forcing or periodic variations in one resistance (e.g., vegetation seasonality), the optimal conductance does depend on climatic drivers such as the length of dry spells or the time of closure of stomata. Key Points Maximizing entropy production can be used to constrain conductances Assuming constant forcing results in climate independent optimized conductances Dynamics in forcing do result in climate dependent optimal conductances ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896820473&doi=10.1002%2f2013GL058533&partnerID=40&md5=315f8d59279a93ef87b26d63c547c0d8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7769
Appears in Collections: 气候减缓与适应
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作者单位: Department of Hydrology, Institute for Water and River Basin Management, Karlsruhe Institute of Technology, Karlsruhe, Germany
Recommended Citation:
Westhoff M.C.,Zehe E.,Schymanski S.J.. Importance of temporal variability for hydrological predictions based on the maximum entropy production principle[J]. Geophysical Research Letters,2014-01-01,41(1).