Impact of vehicular emissions on the formation of fine particles in the  Sao Paulo Metropolitan Area: a numerical study with the WRF-Chem model

Vara-Vela, A; Andrade, M. F.; Kumar, P.; Ynoue, R. Y.; Muñoz, A. G.

doi:10.5194/acp-16-777-2016

Articles | Volume 16, issue 2

https://doi.org/10.5194/acp-16-777-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-777-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 2

Research article

|

25 Jan 2016

Research article |

| 25 Jan 2016

Impact of vehicular emissions on the formation of fine particles in the Sao Paulo Metropolitan Area: a numerical study with the WRF-Chem model

A Vara-Vela, M. F. Andrade, P. Kumar, R. Y. Ynoue, and A. G. Muñoz

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Jun 2015	34	75	5	114
Jul 2015	29	72	7	108
Aug 2015	17	62	4	83
Sep 2015	4	45	1	50
Oct 2015	15	46	4	65
Nov 2015	15	45	6	66
Dec 2015	6	39	7	52
Jan 2016	141	71	10	222
Feb 2016	80	67	10	157
Mar 2016	43	56	10	109
Apr 2016	14	39	3	56
May 2016	17	18	1	36
Jun 2016	17	7	1	25
Jul 2016	12	11	4	27
Aug 2016	13	4	0	17
Sep 2016	15	11	3	29
Oct 2016	9	5	1	15
Nov 2016	9	17	0	26
Dec 2016	7	18	0	25
Jan 2017	18	33	1	52
Feb 2017	12	19	0	31
Mar 2017	27	44	1	72
Apr 2017	22	47	2	71
May 2017	25	19	0	44
Jun 2017	22	14	1	37
Jul 2017	19	8	9	36
Aug 2017	12	11	3	26
Sep 2017	18	21	0	39
Oct 2017	11	20	0	31
Nov 2017	17	26	3	46
Dec 2017	14	19	2	35
Jan 2018	12	18	0	30
Feb 2018	13	15	0	28
Mar 2018	13	25	2	40
Apr 2018	10	15	1	26
May 2018	19	13	2	34
Jun 2018	23	26	2	51
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Dec 2019	5	9	1	15
Jan 2020	10	5	0	15
Feb 2020	8	7	1	16
Mar 2020	3	3	1	7
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Mar 2023	27	21	0	48
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Jun 2023	45	14	2	61
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Nov 2023	31	10	0	41
Dec 2023	41	19	2	62
Jan 2024	41	22	2	65
Feb 2024	33	9	0	42
Mar 2024	46	33	1	80
Apr 2024	35	23	3	61
May 2024	12	10	0	22
Jun 2024	23	10	1	34
Jul 2024	16	17	2	35
Aug 2024	37	13	3	53
Sep 2024	10	5	0	15
Oct 2024	25	7	3	35
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Dec 2024	16	9	7	32
Jan 2025	28	23	4	55
Feb 2025	42	18	5	65
Mar 2025	17	12	3	32
Apr 2025	20	17	4	41
May 2025	20	8	2	30
Jun 2025	50	12	5	67
Jul 2025	26	19	3	48
Aug 2025	44	14	1	59
Sep 2025	32	27	7	66
Oct 2025	28	31	0	59
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Cumulative views and downloads (calculated since 20 May 2015)

Month	HTML	PDF	XML	Total
May 2015	52	81	7	140
Jun 2015	34	75	5	114
Jul 2015	29	72	7	108
Aug 2015	17	62	4	83
Sep 2015	4	45	1	50
Oct 2015	15	46	4	65
Nov 2015	15	45	6	66
Dec 2015	6	39	7	52
Jan 2016	141	71	10	222
Feb 2016	80	67	10	157
Mar 2016	43	56	10	109
Apr 2016	14	39	3	56
May 2016	17	18	1	36
Jun 2016	17	7	1	25
Jul 2016	12	11	4	27
Aug 2016	13	4	0	17
Sep 2016	15	11	3	29
Oct 2016	9	5	1	15
Nov 2016	9	17	0	26
Dec 2016	7	18	0	25
Jan 2017	18	33	1	52
Feb 2017	12	19	0	31
Mar 2017	27	44	1	72
Apr 2017	22	47	2	71
May 2017	25	19	0	44
Jun 2017	22	14	1	37
Jul 2017	19	8	9	36
Aug 2017	12	11	3	26
Sep 2017	18	21	0	39
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Nov 2017	17	26	3	46
Dec 2017	14	19	2	35
Jan 2018	12	18	0	30
Feb 2018	13	15	0	28
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Apr 2018	10	15	1	26
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Mar 2023	27	21	0	48
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Oct 2023	58	10	3	71
Nov 2023	31	10	0	41
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Jan 2024	41	22	2	65
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Apr 2024	35	23	3	61
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Jan 2025	28	23	4	55
Feb 2025	42	18	5	65
Mar 2025	17	12	3	32
Apr 2025	20	17	4	41
May 2025	20	8	2	30
Jun 2025	50	12	5	67
Jul 2025	26	19	3	48
Aug 2025	44	14	1	59
Sep 2025	32	27	7	66
Oct 2025	28	31	0	59
Nov 2025	7	7	0	14

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Short summary

This study provides a first step to understand the impact of vehicular emissions on the formation of secondary particles as well as the feedback between these particles and meteorology in the Sao Paulo Metropolitan Area (SPMA). Among the main research findings are: - The emissions of primary gases from vehicles led to a production between 20 and 30 % due to new particles formation in relation to the total mass concentration PM2.5 in the downtown SPMA.