Boundary-Layer Meteorology

, Volume 135, Issue 1, pp 151–159

Intercomparison of Sensible Heat Flux from Large Aperture Scintillometer and Eddy Covariance Methods: Field Experiment over a Homogeneous Semi-arid Region

  • Dawit A. Zeweldi
  • Mekonnen Gebremichael
  • Junming Wang
  • Theodore Sammis
  • Jan Kleissl
  • David Miller
Open Access
Article

DOI: 10.1007/s10546-009-9460-9

Cite this article as:
Zeweldi, D.A., Gebremichael, M., Wang, J. et al. Boundary-Layer Meteorol (2010) 135: 151. doi:10.1007/s10546-009-9460-9

Abstract

Scintillometers are becoming increasingly popular for the validation of satellite remote sensing sensible heat-flux estimates due to the comparable spatial resolutions. However, it is important to gain confidence in the accuracy of the sensible heat-flux measurements obtained by the scintillometer. Large aperture scintillometer (LAS) and eddy-covariance (EC) measurements were collected over a homogeneous, dry and semi-arid region near Las Cruces, New Mexico, USA, where the homogeneity allowed direct comparison of the two instruments despite their differences in footprint sizes. The differences between the sensible heat-flux measured by both LAS and EC systems fall within the differences between two EC systems. We conclude that the large aperture scintillometer is a reliable system for measuring sensible heat flux in a dry semiarid region.

Keywords

Eddy covariance Large aperture scintillometer Sensible heat flux West Mesa desert 

Copyright information

© The Author(s) 2009

Authors and Affiliations

  • Dawit A. Zeweldi
    • 1
  • Mekonnen Gebremichael
    • 1
  • Junming Wang
    • 2
  • Theodore Sammis
    • 2
  • Jan Kleissl
    • 3
  • David Miller
    • 4
  1. 1.Civil and Environmental Engineering DepartmentUniversity of ConnecticutStorrsUSA
  2. 2.Department of Agronomy and HorticultureNew Mexico State UniversityLas CrucesUSA
  3. 3.Department of Mechanical and Aerospace EngineeringUniversity of California-San DiegoSan DiegoUSA
  4. 4.Natural Resources management and Engineering DepartmentUniversity of ConnecticutStorrsUSA

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