Arid
DOI10.1029/2010WR009874
Evaluating the complementary relationship for estimating evapotranspiration from arid shrublands
Huntington, J. L.1; Szilagyi, J.2,3; Tyler, S. W.4; Pohll, G. M.1
通讯作者Huntington, J. L.
来源期刊WATER RESOURCES RESEARCH
ISSN0043-1397
EISSN1944-7973
出版年2011
卷号47
英文摘要

Given increasing demands on finite water supplies, accurate estimates of evapotranspiration (LE) from arid shrublands of the Southwestern United States are needed to develop or refine basin water budgets. In this work, a novel approach to estimating the equilibrium (or wet environment) surface temperature (T-e) and LE from regionally extensive phreatophyte shrublands is tested using complementary theory and micrometeorological data collected from five eddy correlation stations located in eastern Nevada. A symmetric complementary relationship between the potential LE (LEp) and actual LE is extremely attractive because it is based on general feedback mechanisms where detailed knowledge of the complex processes and interactions between soil, vegetation, and the near-surface boundary layer can be avoided. Analysis of computed LEp and eddy correlation-derived LE indicates that there is unequivocal evidence of a complementary relationship between LEp and LE, where the measured and normalized complementary relationship is symmetric when T-e is utilized to compute the wet environment LE (LEw). Application of a modified Brutsaert and Stricker advection-aridity (AA) model, where T-e is utilized to compute LEw as opposed to the measured air temperature, indicates an improvement in prediction accuracy over the standard Brutsaert and Stricker AA model. Monthly and annual predictions of LE using the modified AA model are within the uncertainty of the measurement accuracy, making the application of this approach potentially useful for estimating regional LE in arid shrubland environments. Our observational evidence supports the idea of a symmetric complementary relationship yielding an approach with standard parameters, making it simple to apply with satisfactory accuracy. To our knowledge, this work presents the first application and evaluation of the complementary relationship in phreatophyte shrublands while utilizing the T-e with comparisons to actual LE via flux measurements.


类型Article
语种英语
国家USA ; Hungary
收录类别SCI-E
WOS记录号WOS:000291110800003
WOS关键词REGIONAL EVAPOTRANSPIRATION ; PAN EVAPORATION ; GREAT-BASIN ; SOIL-WATER ; EDDY-COVARIANCE ; MODEL ; GROUNDWATER ; TRANSPORT ; BALANCE ; HEAT
WOS类目Environmental Sciences ; Limnology ; Water Resources
WOS研究方向Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/170806
作者单位1.Desert Res Inst, Div Hydrol Sci, Reno, NV 89512 USA;
2.Budapest Univ Technol & Econ, Dept Hydraul & Water Resources Engn, H-1111 Budapest, Hungary;
3.Univ Nebraska, Sch Nat Resources, Lincoln, NE USA;
4.Univ Nevada, Dept Geol Sci & Engn, Reno, NV 89557 USA
推荐引用方式
GB/T 7714
Huntington, J. L.,Szilagyi, J.,Tyler, S. W.,et al. Evaluating the complementary relationship for estimating evapotranspiration from arid shrublands[J],2011,47.
APA Huntington, J. L.,Szilagyi, J.,Tyler, S. W.,&Pohll, G. M..(2011).Evaluating the complementary relationship for estimating evapotranspiration from arid shrublands.WATER RESOURCES RESEARCH,47.
MLA Huntington, J. L.,et al."Evaluating the complementary relationship for estimating evapotranspiration from arid shrublands".WATER RESOURCES RESEARCH 47(2011).
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