DOI: 10.1002/2013GL058979
论文题名: Coupled heat and vapor transport: The thermostat effect of a freely evaporating land surface
作者: Szilagyi J. ; Schepers A.
刊名: Geophysical Research Letters
ISSN: 0094-10460
EISSN: 1944-10191
出版年: 2014
卷: 41, 期: 2 起始页码: 435
结束页码: 441
语种: 英语
英文关键词: evaporation
; wet-bulb temperature
; wet-surface temperature
Scopus关键词: Atmospheric temperature
; Evaporation
; Infrared imaging
; Two dimensional
; Priestley-Taylor equation
; Semi-arid environments
; Standard deviation
; Surface moistures
; Temperature differences
; Thermal infrared images
; Wet-bulb temperatures
; Wind conditions
; Vapors
; arid environment
; evaporation
; heat transfer
; land surface
; moisture flux
; semiarid region
; Nebraska
; United States
英文摘要: Analytical solutions of the 2-D heat and vapor transport equations for a surface moisture jump are often based on a constant streamwise temperature (Tws) assumption over the wet vegetated surface. By analyzing 90 thermal infrared images taken over center-pivot irrigated areas in Nebraska, it has been demonstrated for the first time that such an assumption is realistic. Average temperature difference between the perimeter and core of the irrigated full or half circles stayed between -0.11 and 0.09°C (standard deviation of 0.25-0.41°C). It was further demonstrated that wet-bulb temperatures (a proxy of Tws) remain near constant during drying of the environment when net radiation and wind conditions stay largely unchanged, enabling estimation of Tws at any stage of drying, thus improving evaporation estimates of the Priestley-Taylor equation in arid and semiarid environments. ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84892984688&doi=10.1002%2f2013GL058979&partnerID=40&md5=bc31e11ef3ed2ff3eb4f2d787d1e72be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7724
Appears in Collections: 气候减缓与适应
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作者单位: Department of Hydraulic and Water Resources Engineering, Budapest University of Technology and Economics, Budapest, Hungary
Recommended Citation:
Szilagyi J.,Schepers A.. Coupled heat and vapor transport: The thermostat effect of a freely evaporating land surface[J]. Geophysical Research Letters,2014-01-01,41(2).