Characterization of aerosol particles at Cabo Verde close to sea level and at the cloud level – Part 1: Particle number size distribution, cloud condensation nuclei and their origins

Gong, Xianda; Wex, Heike; Voigtländer, Jens; Fomba, Khanneh Wadinga; Weinhold, Kay; van Pinxteren, Manuela; Henning, Silvia; Müller, Thomas; Herrmann, Hartmut; Stratmann, Frank

doi:10.5194/acp-20-1431-2020

Articles | Volume 20, issue 3

https://doi.org/10.5194/acp-20-1431-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Marine organic matter: from biological production in the ocean...

https://doi.org/10.5194/acp-20-1431-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 3

Research article

|

06 Feb 2020

Research article |

| 06 Feb 2020

Characterization of aerosol particles at Cabo Verde close to sea level and at the cloud level – Part 1: Particle number size distribution, cloud condensation nuclei and their origins

Xianda Gong, Heike Wex, Jens Voigtländer, Khanneh Wadinga Fomba, Kay Weinhold, Manuela van Pinxteren, Silvia Henning, Thomas Müller, Hartmut Herrmann, and Frank Stratmann

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Jan 2020	16	7	0	23
Feb 2020	276	69	7	352
Mar 2020	51	31	6	88
Apr 2020	31	21	0	52
May 2020	25	13	0	38
Jun 2020	31	19	0	50
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Aug 2020	38	25	2	65
Sep 2020	43	21	0	64
Oct 2020	20	29	0	49
Nov 2020	17	10	0	27
Dec 2020	87	20	0	107
Jan 2021	38	32	0	70
Feb 2021	20	26	0	46
Mar 2021	22	17	1	40
Apr 2021	21	25	0	46
May 2021	17	19	1	37
Jun 2021	20	16	0	36
Jul 2021	20	22	0	42
Aug 2021	22	12	0	34
Sep 2021	36	8	0	44
Oct 2021	28	38	0	66
Nov 2021	29	24	1	54
Dec 2021	20	13	0	33
Jan 2022	27	15	0	42
Feb 2022	21	7	1	29
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Oct 2022	29	9	1	39
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Jun 2023	65	4	1	70
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Dec 2023	67	8	3	78
Jan 2024	58	6	1	65
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Apr 2024	116	5	2	123
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Dec 2024	33	3	2	38
Jan 2025	49	6	4	59
Feb 2025	78	7	0	85
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Cumulative views and downloads (calculated since 11 Jul 2019)

Month	HTML	PDF	XML	Total
Jul 2019	178	57	5	240
Aug 2019	39	11	2	52
Sep 2019	36	19	0	55
Oct 2019	32	26	1	59
Nov 2019	33	24	2	59
Dec 2019	24	25	0	49
Jan 2020	16	7	0	23
Feb 2020	276	69	7	352
Mar 2020	51	31	6	88
Apr 2020	31	21	0	52
May 2020	25	13	0	38
Jun 2020	31	19	0	50
Jul 2020	61	32	4	97
Aug 2020	38	25	2	65
Sep 2020	43	21	0	64
Oct 2020	20	29	0	49
Nov 2020	17	10	0	27
Dec 2020	87	20	0	107
Jan 2021	38	32	0	70
Feb 2021	20	26	0	46
Mar 2021	22	17	1	40
Apr 2021	21	25	0	46
May 2021	17	19	1	37
Jun 2021	20	16	0	36
Jul 2021	20	22	0	42
Aug 2021	22	12	0	34
Sep 2021	36	8	0	44
Oct 2021	28	38	0	66
Nov 2021	29	24	1	54
Dec 2021	20	13	0	33
Jan 2022	27	15	0	42
Feb 2022	21	7	1	29
Mar 2022	22	10	0	32
Apr 2022	25	17	1	43
May 2022	31	26	0	57
Jun 2022	28	13	0	41
Jul 2022	9	2	0	11
Aug 2022	37	8	2	47
Sep 2022	17	13	0	30
Oct 2022	29	9	1	39
Nov 2022	28	14	0	42
Dec 2022	25	5	0	30
Jan 2023	27	7	0	34
Feb 2023	38	12	0	50
Mar 2023	66	9	0	75
Apr 2023	58	6	1	65
May 2023	53	9	0	62
Jun 2023	65	4	1	70
Jul 2023	45	10	1	56
Aug 2023	74	12	4	90
Sep 2023	86	8	0	94
Oct 2023	109	5	1	115
Nov 2023	46	5	3	54
Dec 2023	67	8	3	78
Jan 2024	58	6	1	65
Feb 2024	102	7	0	109
Mar 2024	51	19	3	73
Apr 2024	116	5	2	123
May 2024	59	2	3	64
Jun 2024	92	12	16	120
Jul 2024	44	4	0	48
Aug 2024	43	6	1	50
Sep 2024	31	8	1	40
Oct 2024	49	3	1	53
Nov 2024	44	3	1	48
Dec 2024	33	3	2	38
Jan 2025	49	6	4	59
Feb 2025	78	7	0	85
Mar 2025	55	10	0	65
Apr 2025	60	20	3	83
May 2025	58	5	1	64
Jun 2025	71	10	2	83
Jul 2025	50	17	1	68
Aug 2025	65	11	2	78
Sep 2025	128	22	3	153
Oct 2025	47	28	0	75
Nov 2025	190	23	4	217

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Short summary

We characterized the aerosol particles in Cabo Verde at sea and cloud levels. We found four well-separable types of PNSDs, with the strongest differences between air masses coming from the ocean compared to from the African continent. During the strongest observed dust periods, CCN concentrations were 2.5 higher than during clean marine periods. The hygroscopicity of the particles did not vary much between different periods. Aerosol at sea level and on the mountaintop was well in agreement.


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