Articles | Volume 12, issue 1
Biogeosciences, 12, 103–123, 2015
https://doi.org/10.5194/bg-12-103-2015

Special issue: 9th International Carbon Dioxide Conference (ICDC9) (ESD/ACP/AMT/BG...

Biogeosciences, 12, 103–123, 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 et al.

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Short summary
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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