Eddy Fluxes Of CO2, Water Vapor, And Sensible Heat Over A Deciduous Forest

  • Sites: US-WBW
  • Publication Type: JOUR
  • Authors: Verma, S. B.; Baldocchi, D. D.; Anderson, D. E.; Matt, D. R.; Clement, R. J.

  • Fluxes of CO2, latent heat and sensible heat were measured above a fully-leafed deciduous forest in eastern Tennessee with the eddy correlation technique. These are among the first reported observations over such a surface. The influences of solar radiation, vapor pressure deficit and the aerodynamic and canopy resistances on these mass and energy exchanges are examined. Following a concept introduced by McNaughton and Jarvis (1983), examination of our data suggest that the water vapor exchange of a deciduous forest is not as strongly coupled with net radiation as is that of agricultural crops. The degree of decoupling is smaller than in the case of a coniferous forest. This difference may be attributable in part to the greater aerodynamic resistance to water vapor transfer in a deciduous forest. It appears that the concept of decoupling may be extended to the CO2 exchange of a deciduous forest as well.


  • Journal: Boundary-Layer Meteorology
  • Funding Agency: —
  • Citation Information:
  • Volume: 36
  • No: 1-2
  • Pages: 71-91
  • Publication Year: 1986/07
  • DOI: 10.1007/bf00117459