Regional-scale transport of air pollutants: impacts of Southern California emissions on Phoenix ground-level ozone concentrations

Li, J.; Georgescu, M.; Hyde, P.; Mahalov, A.; Moustaoui, M.

doi:10.5194/acp-15-9345-2015

Articles | Volume 15, issue 16

https://doi.org/10.5194/acp-15-9345-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-15-9345-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 16

Research article

|

21 Aug 2015

Research article |

| 21 Aug 2015

Regional-scale transport of air pollutants: impacts of Southern California emissions on Phoenix ground-level ozone concentrations

J. Li, M. Georgescu, P. Hyde, A. Mahalov, and M. Moustaoui

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Month	HTML	PDF	XML	Total
Mar 2015	68	101	18	187
Apr 2015	42	33	5	80
May 2015	12	19	8	39
Jun 2015	8	10	7	25
Jul 2015	17	23	3	43
Aug 2015	76	80	8	164
Sep 2015	23	86	17	126
Oct 2015	46	63	2	111
Nov 2015	32	94	2	128
Dec 2015	24	77	4	105
Jan 2016	34	51	3	88
Feb 2016	27	39	1	67
Mar 2016	23	11	1	35
Apr 2016	8	9	0	17
May 2016	9	6	0	15
Jun 2016	10	9	0	19
Jul 2016	7	3	3	13
Aug 2016	15	6	0	21
Sep 2016	12	5	0	17
Oct 2016	12	6	0	18
Nov 2016	10	6	0	16
Dec 2016	2	4	0	6
Jan 2017	23	8	0	31
Feb 2017	15	3	2	20
Mar 2017	23	4	2	29
Apr 2017	26	8	2	36
May 2017	26	10	1	37
Jun 2017	26	10	1	37
Jul 2017	19	6	0	25
Aug 2017	8	4	0	12
Sep 2017	11	17	0	28
Oct 2017	10	11	1	22
Nov 2017	7	11	1	19
Dec 2017	5	7	0	12
Jan 2018	10	13	1	24
Feb 2018	6	11	1	18
Mar 2018	11	10	0	21
Apr 2018	9	7	0	16
May 2018	15	5	1	21
Jun 2018	14	8	0	22
Jul 2018	10	6	0	16
Aug 2018	10	7	0	17
Sep 2018	9	12	0	21
Oct 2018	12	10	1	23
Nov 2018	18	17	0	35
Dec 2018	8	3	1	12
Jan 2019	6	12	1	19
Feb 2019	3	7	1	11
Mar 2019	6	10	0	16
Apr 2019	7	10	0	17
May 2019	8	16	0	24
Jun 2019	7	10	0	17
Jul 2019	3	12	0	15
Aug 2019	4	4	0	8
Sep 2019	2	1	0	3
Oct 2019	1	4	0	5
Nov 2019	5	2	0	7
Dec 2019	5	4	0	9
Jan 2020	7	6	0	13
Feb 2020	11	1	0	12
Mar 2020	6	4	1	11
Apr 2020	13	3	0	16
May 2020	15	2	0	17
Jun 2020	24	6	0	30
Jul 2020	16	10	6	32
Aug 2020	27	7	2	36
Sep 2020	18	6	0	24
Oct 2020	16	7	1	24
Nov 2020	15	4	1	20
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Jan 2021	21	12	0	33
Feb 2021	20	4	0	24
Mar 2021	17	6	0	23
Apr 2021	21	9	0	30
May 2021	20	8	1	29
Jun 2021	15	5	0	20
Jul 2021	15	4	0	19
Aug 2021	28	12	0	40
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Oct 2021	8	37	0	45
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Jan 2022	9	7	0	16
Feb 2022	9	11	2	22
Mar 2022	11	8	0	19
Apr 2022	4	4	2	10
May 2022	13	4	1	18
Jun 2022	14	5	1	20
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Jan 2023	8	11	0	19
Feb 2023	10	6	1	17
Mar 2023	8	8	0	16
Apr 2023	8	5	0	13
May 2023	29	14	0	43
Jun 2023	34	4	2	40
Jul 2023	35	5	3	43
Aug 2023	39	9	3	51
Sep 2023	36	7	0	43
Oct 2023	39	10	5	54
Nov 2023	24	3	1	28
Dec 2023	35	4	1	40
Jan 2024	34	6	0	40
Feb 2024	36	10	0	46
Mar 2024	39	12	3	54
Apr 2024	35	8	4	47
May 2024	15	19	2	36
Jun 2024	18	13	2	33
Jul 2024	26	21	2	49
Aug 2024	21	8	2	31
Sep 2024	5	7	0	12
Oct 2024	13	11	0	24
Nov 2024	13	6	2	21
Dec 2024	10	13	3	26
Jan 2025	21	8	4	33
Feb 2025	21	14	4	39
Mar 2025	26	14	6	46
Apr 2025	13	16	0	29
May 2025	32	8	2	42
Jun 2025	41	7	0	48
Jul 2025	11	16	0	27
Aug 2025	19	18	1	38
Sep 2025	18	14	2	34
Oct 2025	14	22	1	37
Nov 2025	35	31	5	71
Dec 2025	1	2	0	3

Cumulative views and downloads (calculated since 19 Mar 2015)

Month	HTML	PDF	XML	Total
Mar 2015	68	101	18	187
Apr 2015	42	33	5	80
May 2015	12	19	8	39
Jun 2015	8	10	7	25
Jul 2015	17	23	3	43
Aug 2015	76	80	8	164
Sep 2015	23	86	17	126
Oct 2015	46	63	2	111
Nov 2015	32	94	2	128
Dec 2015	24	77	4	105
Jan 2016	34	51	3	88
Feb 2016	27	39	1	67
Mar 2016	23	11	1	35
Apr 2016	8	9	0	17
May 2016	9	6	0	15
Jun 2016	10	9	0	19
Jul 2016	7	3	3	13
Aug 2016	15	6	0	21
Sep 2016	12	5	0	17
Oct 2016	12	6	0	18
Nov 2016	10	6	0	16
Dec 2016	2	4	0	6
Jan 2017	23	8	0	31
Feb 2017	15	3	2	20
Mar 2017	23	4	2	29
Apr 2017	26	8	2	36
May 2017	26	10	1	37
Jun 2017	26	10	1	37
Jul 2017	19	6	0	25
Aug 2017	8	4	0	12
Sep 2017	11	17	0	28
Oct 2017	10	11	1	22
Nov 2017	7	11	1	19
Dec 2017	5	7	0	12
Jan 2018	10	13	1	24
Feb 2018	6	11	1	18
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Apr 2018	9	7	0	16
May 2018	15	5	1	21
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Apr 2023	8	5	0	13
May 2023	29	14	0	43
Jun 2023	34	4	2	40
Jul 2023	35	5	3	43
Aug 2023	39	9	3	51
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Oct 2023	39	10	5	54
Nov 2023	24	3	1	28
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Jan 2024	34	6	0	40
Feb 2024	36	10	0	46
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Apr 2024	35	8	4	47
May 2024	15	19	2	36
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Jul 2024	26	21	2	49
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Oct 2024	13	11	0	24
Nov 2024	13	6	2	21
Dec 2024	10	13	3	26
Jan 2025	21	8	4	33
Feb 2025	21	14	4	39
Mar 2025	26	14	6	46
Apr 2025	13	16	0	29
May 2025	32	8	2	42
Jun 2025	41	7	0	48
Jul 2025	11	16	0	27
Aug 2025	19	18	1	38
Sep 2025	18	14	2	34
Oct 2025	14	22	1	37
Nov 2025	35	31	5	71
Dec 2025	1	2	0	3

Latest update: 04 Dec 2025

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Short summary

Emission sensitivity studies, using WRF-Chem at 1.3km that was validated by observations, indicate the Arizona (AZ) emissions dominate on daily maximum 8-hr average (DMA8) [O3] in Phoenix (PHX). Southern California (SoCal) emission contribute to DMA8 [O3] for the PHX from a few ppb to over 30 ppb. [O3] from SoCal and AZ emissions exhibits diurnal characteristics. Pollutants near the SoCal coasts are transported to PHX by local circulations with different mechanisms.