Articles | Volume 19, issue 7
Atmos. Chem. Phys., 19, 4615–4635, 2019
https://doi.org/10.5194/acp-19-4615-2019
Atmos. Chem. Phys., 19, 4615–4635, 2019
https://doi.org/10.5194/acp-19-4615-2019

Research article 08 Apr 2019

Research article | 08 Apr 2019

From weak to intense downslope winds: origin, interaction with boundary-layer turbulence and impact on CO2 variability

Jon Ander Arrillaga et al.

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Thermally driven downslope winds develop in mountainous areas under a weak large-scale forcing and clear skies. In this work, we find that their onset time and intensity are closely connected with both the large-scale wind and soil moisture. We also show how the distinct downslope intensities shape the turbulent and thermal features of the nocturnal atmosphere. The analysis concludes that the downslope–turbulence interaction and the horizontal transport explain the important CO2 variability.
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