Quantification of surface energy fluxes from a small water body using scintillometry and eddy covariance

McGloin, Ryan, McGowan, Hamish, McJannet, David, Cook, Freeman, Sogachev, Andrey and Burn, Stewart (2014) Quantification of surface energy fluxes from a small water body using scintillometry and eddy covariance. Water Resource Research, 50 1: 494-513. doi:10.1002/2013WR013899


Author McGloin, Ryan
McGowan, Hamish
McJannet, David
Cook, Freeman
Sogachev, Andrey
Burn, Stewart
Title Quantification of surface energy fluxes from a small water body using scintillometry and eddy covariance
Journal name Water Resource Research   Check publisher's open access policy
ISSN 0043-1397
1944-7973
Publication date 2014-01
Sub-type Article (original research)
DOI 10.1002/2013WR013899
Open Access Status
Volume 50
Issue 1
Start page 494
End page 513
Total pages 20
Place of publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Collection year 2015
Language eng
Formatted abstract
Accurate quantification of evaporation from small water storages is essential for water management and planning, particularly in water-scarce regions. In order to ascertain suitable methods for direct measurement of evaporation from small water bodies, this study presents a comparison of eddy covariance and scintillometry measurements from a reservoir in southeast Queensland, Australia. The work presented expands on a short study presented by McJannet et al. (2011) to include comparisons of eddy covariance measurements and scintillometer-derived predictions of surface energy fluxes under a wide range of seasonal weather conditions. In this study, analysis was undertaken to ascertain whether important theoretical assumptions required for both techniques are valid in the complex environment of a small reservoir. Statistical comparison, energy balance closure, and the relationship between evaporation measurements and key environmental controls were used to compare the results of the two techniques. Reasonable agreement was shown between the sensible heat flux measurements from eddy covariance and scintillometry, while scintillometer-derived estimates of latent heat flux were approximately 21% greater than eddy covariance measurements. We suggest possible reasons for this difference and provide recommendations for further research for improving measurements of surface energy fluxes over small water bodies using eddy covariance and scintillometry.
Keyword Eddy covariance
Scintillometry
Footprint
Complex terrain
Sensible heat flux
Latent heat flux
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Geography, Planning and Environmental Management Publications
Official 2015 Collection
 
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Created: Thu, 06 Mar 2014, 10:05:46 EST by Helen Smith on behalf of School of Geography, Planning & Env Management