Upscaling of Mesoscale CO2 Fluxes in the Convective Boundary Layer

Authors: Gryning S.-E., Batchvarova E., Soegaard H.

Year: 2009

Issue: 04

Pages: 164-169


A method based on the evolution of the height of the convective boundary layer that has been successfully used for aggregation of sensible heat and momentum fluxes is here applied for aggregation of CO 2 fluxes over Zealand in Denmark. Inputs for the method are vertical profile measurements of CO 2 concentrations, standard measurements of the CO 2 concentration near the ground and successive radio-soundings. The aggregated fluxes of CO 2 represent a combination of agricultural and forest surface conditions.

Tags: aggregation of fluxes; CO 2; convective boundary layer; vertical profiles


  1. Baldocchi, D. and R. Valentinini (2004) Geographic and Temporal Variation of Carbon Exchange by Ecosystems and their Sensitivity to Environmental Pertubations. In C.B. Field and M.R. Raupach (eds). The Global Carbon Cycle, Scope 62. Island Press, 295–316.
  2. Batchvarova, E. and S.-E. Gryning (1991) Applied Model for the Growth of the Daytime Mixed Layer. Boundary-Layer Meteorol., 56, pp. 261–274.
  3. Batchvarova, E., S.-E. Gryning, C.B. Hasager . (2001) Regional fluxes of momentum and sensible heat over a sub-arctic landscape during late winter. Boundary-Layer Meteorol., 99, pp. 489–507.
  4. Denmead, O.T., M.R. Raupach, F.X. Dunin, H.A. Cleugh and R. Leuning (1996) Boundary layer budgets for regional estimates of a scalar. Global Change Biol., 2, pp. 255–264.
  5. Gryning, S.E. and E. Batchvarova. (1999) Regional Heat Flux over the NOPEX Area Estimated from the Evolution of the Mixed Layer. Agric. For. Meteorol., 98–99, 159–168.
  6. Levy, P.E., A. Grelle, A. Lindroth, M. Mölder, P.G. Jarvis, B. Kruijt and J.B. Moncrieff (1999) Regional-scale CO 2 fluxes over central Sweden by a boundary layer budget method. Agric. For. Meteorol., 98–99, pp. 169–180.
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