Articles | Volume 20, issue 21
https://doi.org/10.5194/acp-20-13191-2020
https://doi.org/10.5194/acp-20-13191-2020
Research article
 | 
10 Nov 2020
Research article |  | 10 Nov 2020

Direct and semi-direct radiative forcing of biomass-burning aerosols over the southeast Atlantic (SEA) and its sensitivity to absorbing properties: a regional climate modeling study

Marc Mallet, Fabien Solmon, Pierre Nabat, Nellie Elguindi, Fabien Waquet, Dominique Bouniol, Andrew Mark Sayer, Kerry Meyer, Romain Roehrig, Martine Michou, Paquita Zuidema, Cyrille Flamant, Jens Redemann, and Paola Formenti

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Cited articles

Abel, S. J., Haywood, J. M., Highwood, E. J., Li, J., and Buseck, P.R.: Evolution of biomass burning aerosol properties from an agricultural fire in southern Africa, Geophys. Res. Lett., 30, 1783, https://doi.org/10.1029/2002GL017342, 2003. 
Ackerman, S., O. B. Toon, D. E. Stevens, A. J. Heymsfield, V. Ramanathan, and Welton, E. J.: Reduction of tropical cloudiness, Science, 288, 1042–1047, https://doi.org/10.1126/science.288.5468.1042, 2000. 
Adebiyi, A. A., Zuidema, P., and Abel, S. J.: The convolution of dynamics and moisture with the presence of shortwave absorbing aerosols over the southeast Atlantic, J. Climate, 28, 1997–2024, https://doi.org/10.1175/JCLI-D-14-00352.1, 2015. 
Allen, R. J. and Sherwood, S. C.: Aerosol cloud semi-direct effect and land-sea temperature contrast in a GCM, Geophys. Res. Lett., 37, L07702, https://doi.org/10.1029/2010GL042759, 2010. 
Allen, R. J., Amiri-Farahani, A., Lamarque, J. F., Smith, C., Shindell, D., Hassan, T., and Chung, C. E.: Observationally constrained aerosol–cloud semi-direct effects, npj Clim. Atmos. Sci., 2, 16, https://doi.org/10.1038/s41612-019-0073-9, 2019. 
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Short summary
This paper presents numerical simulations using two regional climate models to study the impact of biomass fire plumes from central Africa on the radiative balance of this region. The results indicate that biomass fires can either warm the regional climate when they are located above low clouds or cool it when they are located above land. They can also alter sea and land surface temperatures by decreasing solar radiation at the surface. Finally, they can also modify the atmospheric dynamics.
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