Articles | Volume 21, issue 9
Atmos. Chem. Phys., 21, 6735–6754, 2021
https://doi.org/10.5194/acp-21-6735-2021
Atmos. Chem. Phys., 21, 6735–6754, 2021
https://doi.org/10.5194/acp-21-6735-2021
Research article
05 May 2021
Research article | 05 May 2021

What drives daily precipitation over the central Amazon? Differences observed between wet and dry seasons

Thiago S. Biscaro et al.

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Cited articles

Ackerman, T. P. and Stokes, G. M.: The Atmospheric Radiation Measurement Program, Phys. Today, 56, 38–44, https://doi.org/10.1063/1.1554135, 2003. 
Adams, D. K., Gutman, S., Holub, K., and Pereira, D.: GNSS Observations of Deep Convective timescales in the Amazon, Geophys. Res. Lett., 40, 2818–2823, https://doi.org/10.1002/grl.50573, 2013. 
Adams, D. K., Barbosa, H. M. J., and Gaitán De Los Ríos, K. P.: A Spatiotemporal Water Vapor–Deep Convection Correlation Metric Derived from the Amazon Dense GNSS Meteorological Network, Mon. Weather Rev. 145, 279–288, https://doi.org/10.1175/MWR-D-16-0140.1, 2017. 
Anber, U., Gentine, P., Wang, S. G., and Sobel, A. H.: Fog and rain in the Amazon, P. Natl. Acad. Sci. USA, 112, 11473–11477, 2015. 
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This study suggests that there are two distinct modes driving diurnal precipitating convective clouds over the central Amazon. In the wet season, local factors such as turbulence and nighttime cloud coverage are the main controls of daily precipitation, while dry-season daily precipitation is modulated primarily by the mesoscale convective pattern. The results imply that models and parameterizations must consider different formulations based on the seasonal cycle to correctly resolve convection.
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