Complex refractive indices and single-scattering albedo of global dust aerosols in the shortwave spectrum and relationship to size and iron content

Di Biagio, Claudia; Formenti, Paola; Balkanski, Yves; Caponi, Lorenzo; Cazaunau, Mathieu; Pangui, Edouard; Journet, Emilie; Nowak, Sophie; Andreae, Meinrat O.; Kandler, Konrad; Saeed, Thuraya; Piketh, Stuart; Seibert, David; Williams, Earle; Doussin, Jean-François

doi:10.5194/acp-19-15503-2019

Articles | Volume 19, issue 24

https://doi.org/10.5194/acp-19-15503-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Simulation chambers as tools in atmospheric research (AMT/ACP/GMD...

https://doi.org/10.5194/acp-19-15503-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 24

Research article

|

19 Dec 2019

Research article |

| 19 Dec 2019

Complex refractive indices and single-scattering albedo of global dust aerosols in the shortwave spectrum and relationship to size and iron content

Claudia Di Biagio, Paola Formenti, Yves Balkanski, Lorenzo Caponi, Mathieu Cazaunau, Edouard Pangui, Emilie Journet, Sophie Nowak, Meinrat O. Andreae, Konrad Kandler, Thuraya Saeed, Stuart Piketh, David Seibert, Earle Williams, and Jean-François Doussin

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Mar 2021	25	34	0	59
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Jul 2025	87	26	2	115
Aug 2025	98	24	6	128
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Apr 2019	36	33	1	70
May 2019	31	24	1	56
Jun 2019	16	10	0	26
Jul 2019	20	13	2	35
Aug 2019	23	18	0	41
Sep 2019	28	16	0	44
Oct 2019	43	21	1	65
Nov 2019	26	17	1	44
Dec 2019	295	120	3	418
Jan 2020	136	62	4	202
Feb 2020	85	38	3	126
Mar 2020	26	31	0	57
Apr 2020	46	22	0	68
May 2020	48	19	0	67
Jun 2020	54	29	3	86
Jul 2020	47	32	4	83
Aug 2020	27	47	1	75
Sep 2020	32	35	1	68
Oct 2020	20	18	0	38
Nov 2020	21	18	2	41
Dec 2020	20	19	1	40
Jan 2021	28	23	0	51
Feb 2021	15	24	0	39
Mar 2021	25	34	0	59
Apr 2021	34	30	0	64
May 2021	40	30	1	71
Jun 2021	36	27	0	63
Jul 2021	36	23	0	59
Aug 2021	28	10	0	38
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Oct 2021	26	56	1	83
Nov 2021	51	52	2	105
Dec 2021	41	17	1	59
Jan 2022	32	16	1	49
Feb 2022	35	13	2	50
Mar 2022	40	21	0	61
Apr 2022	45	33	2	80
May 2022	21	15	0	36
Jun 2022	29	16	1	46
Jul 2022	51	12	0	63
Aug 2022	123	18	0	141
Sep 2022	45	23	1	69
Oct 2022	47	22	1	70
Nov 2022	64	17	0	81
Dec 2022	31	27	4	62
Jan 2023	38	21	1	60
Feb 2023	65	17	1	83
Mar 2023	82	39	8	129
Apr 2023	46	21	0	67
May 2023	62	38	0	100
Jun 2023	48	15	1	64
Jul 2023	59	39	2	100
Aug 2023	45	35	8	88
Sep 2023	52	30	1	83
Oct 2023	70	28	5	103
Nov 2023	75	19	0	94
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Jan 2024	72	24	0	96
Feb 2024	63	57	1	121
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Apr 2024	67	25	4	96
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Jul 2024	77	20	2	99
Aug 2024	64	26	4	94
Sep 2024	51	15	0	66
Oct 2024	86	15	1	102
Nov 2024	54	12	1	67
Dec 2024	75	21	3	99
Jan 2025	112	21	4	137
Feb 2025	130	17	0	147
Mar 2025	104	29	0	133
Apr 2025	92	203	0	295
May 2025	111	18	0	129
Jun 2025	115	24	7	146
Jul 2025	87	26	2	115
Aug 2025	98	24	6	128
Sep 2025	139	34	2	175
Oct 2025	88	40	2	130
Nov 2025	76	38	4	118

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Short summary

This paper presents a new dataset of laboratory measurements of the shortwave (SW) spectral complex refractive index and single-scattering albedo (SSA) for global mineral dust aerosols of varying origin and composition. Our results show that the dust refractive index and SSA vary strongly from source to source, mostly due to particle iron content changes. We recommend that source-dependent values of the SW spectral refractive index and SSA be used in models and remote sensing applications.


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