Articles | Volume 12, issue 1
https://doi.org/10.5194/bg-12-103-2015
https://doi.org/10.5194/bg-12-103-2015
Research article
 | 
08 Jan 2015
Research article |  | 08 Jan 2015

Two perspectives on the coupled carbon, water and energy exchange in the planetary boundary layer

M. Combe, J. Vilà-Guerau de Arellano, H. G. Ouwersloot, C. M. J. Jacobs, and W. Peters

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Cited articles

Ahmadov, R., Gerbig, C., Kretschmer, R., Koerner, S., Neininger, B., Dolman, A. J., and Sarrat, C.: Mesoscale covariance of transport and CO2 fluxes: Evidence from observations and simulations using the WRF–VPRM coupled atmosphere–biosphere model, J. Geophys. Res., 112, D22107, https://doi.org/10.1029/2007JD008552, 2007.
Albergel, C., Calvet, J.-C., Mahfouf, J.-F., Rüdiger, C., Barbu, A. L., Lafont, S., Roujean, J.-L., Walker, J. P., Crapeau, M., and Wigneron, J.-P.: Monitoring of water and carbon fluxes using a land data assimilation system: a case study for southwestern France, Hydrol. Earth Syst. Sci., 14, 1109–1124, https://doi.org/10.5194/hess-14-1109-2010, 2010.
Aubinet, M., Vesala, T., and Papale, D. (Eds.): Eddy Covariance: A Practical Guide to Measurement and Data Analysis, Springer, Dordrecht, the Netherlands, 2012.
Ball, J. T.: An analysis of stomatal conductance, Ph.D. thesis, Stanford University, Stanford, CA, 1988.
Barbaro, E. and Vilà-Guerau De Arellano, J. and Ouwersloot, H. G. and Schröter, J. and Donovan, D. P. and Krol, M. C.: Aerosols in the convective boundary layer: Shortwave radiation effects on the coupled land atmosphere system, J. Geophys. Res.-Atmos., 119, 5845–5863, 2014.
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This study investigates the interactions among the carbon, water and heat cycles above a maize field at the diurnal scale. We couple two land-surface schemes, corresponding to two different modelling approaches, to the same atmospheric boundary-layer (ABL) model. We find the simpler meteorological approach best reproduces the surface and upper-air observations. Finally, we show that the interaction of subsidence with ABL dynamics is key to explain the daytime atmospheric CO2 budget.
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