Comparing the simulated influence of biomass burning plumes on low-level clouds over the southeastern Atlantic under varying smoke conditions

Baró Pérez, Alejandro; Diamond, Michael S.; Bender, Frida A.-M.; Devasthale, Abhay; Schwarz, Matthias; Savre, Julien; Tonttila, Juha; Kokkola, Harri; Lee, Hyunho; Painemal, David; Ekman, Annica M. L.

doi:10.5194/acp-24-4591-2024

Articles | Volume 24, issue 8

https://doi.org/10.5194/acp-24-4591-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

New observations and related modelling studies of the aerosol–cloud–climate...

https://doi.org/10.5194/acp-24-4591-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 8

Research article

|

18 Apr 2024

Research article |

| 18 Apr 2024

Comparing the simulated influence of biomass burning plumes on low-level clouds over the southeastern Atlantic under varying smoke conditions

Alejandro Baró Pérez, Michael S. Diamond, Frida A.-M. Bender, Abhay Devasthale, Matthias Schwarz, Julien Savre, Juha Tonttila, Harri Kokkola, Hyunho Lee, David Painemal, and Annica M. L. Ekman

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Cumulative views and downloads (calculated since 16 Oct 2023)

Month	HTML	PDF	XML	Total
Oct 2023	150	55	7	212
Nov 2023	61	19	1	81
Dec 2023	31	10	5	46
Jan 2024	41	10	2	53
Feb 2024	31	11	4	46
Mar 2024	34	9	1	44
Apr 2024	355	38	18	411
May 2024	92	17	6	115
Jun 2024	53	13	4	70
Jul 2024	215	15	7	237
Aug 2024	57	17	8	82
Sep 2024	44	8	0	52
Oct 2024	26	4	0	30
Nov 2024	19	4	2	25
Dec 2024	9	2	0	11
Jan 2025	39	6	1	46
Feb 2025	37	3	2	42
Mar 2025	33	1	0	34
Apr 2025	53	8	1	62
May 2025	71	6	2	79
Jun 2025	98	7	1	106
Jul 2025	46	11	2	59
Aug 2025	67	15	0	82
Sep 2025	265	5	1	271
Oct 2025	43	10	0	53
Nov 2025	98	16	4	118
Dec 2025	47	12	1	60

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Short summary

We use a numerical model to study interactions between humid light-absorbing aerosol plumes, clouds, and radiation over the southeast Atlantic. We find that the warming produced by the aerosols reduces cloud cover, especially in highly polluted situations. Aerosol impacts on drizzle play a minor role. However, aerosol effects on cloud reflectivity and moisture-induced changes in cloud cover dominate the climatic response and lead to an overall cooling by the biomass burning plumes.


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