Boundary-Layer Meteorology

, Volume 142, Issue 3, pp 365–382 | Cite as

The Effect of the Vertical Source Distribution on Scalar Statistics within and above a Forest Canopy

  • S. L. Edburg
  • D. Stock
  • B. K. Lamb
  • E. G. Patton


Little is known about in-canopy processes that may alter forest–atmosphere exchanges of trace gases and aerosols. To improve our understanding of in-canopy mixing, we use large-eddy simulation to study the effect of scalar source/sink distributions on scalar concentration moments, fluxes, and correlation coefficients within and above an ideal forest canopy. Scalars are emitted from: (1) the ground, (2) the canopy, and (3) both the ground and the canopy; a scalar is also deposited onto the canopy. All scalar concentration moments, fluxes, and correlation coefficients are affected by the source location/distribution, as is the scalar segregation intensity. We conclude that vertical source/sink distribution has a profound impact on scalar concentration profiles, fluxes, correlation coefficient, and scalar segregation.


Biogenic volatile organic compounds Dispersion Forest canopy Large-eddy simulation Scalar transport Turbulence 


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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • S. L. Edburg
    • 1
  • D. Stock
    • 2
  • B. K. Lamb
    • 1
  • E. G. Patton
    • 3
  1. 1.Laboratory for Atmospheric Research, Department of Civil and Environmental EngineeringWashington State UniversityPullmanUSA
  2. 2.Department of Mechanical EngineeringWashington State UniversityPullmanUSA
  3. 3.Mesoscale and Microscale Meteorology DivisionNational Center for Atmospheric ResearchBoulderUSA

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