Assessment of long-term WRF–CMAQ simulations for understanding direct aerosol effects on radiation "brightening" in the United States

Gan, C.-M.; Pleim, J.; Mathur, R.; Hogrefe, C.; Long, C. N.; Xing, J.; Wong, D.; Gilliam, R.; Wei, C.

doi:10.5194/acp-15-12193-2015

Articles | Volume 15, issue 21

https://doi.org/10.5194/acp-15-12193-2015

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

https://doi.org/10.5194/acp-15-12193-2015

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

Articles | Volume 15, issue 21

Research article

|

03 Nov 2015

Research article |

| 03 Nov 2015

Assessment of long-term WRF–CMAQ simulations for understanding direct aerosol effects on radiation "brightening" in the United States

C.-M. Gan, J. Pleim, R. Mathur, C. Hogrefe, C. N. Long, J. Xing, D. Wong, R. Gilliam, and C. Wei

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Total article views: 4,969 (including HTML, PDF, and XML)

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Views and downloads (calculated since 01 Jul 2015)

Month	HTML	PDF	XML	Total
Jul 2015	72	154	7	233
Aug 2015	33	47	3	83
Sep 2015	19	37	1	57
Oct 2015	20	16	2	38
Nov 2015	161	153	17	331
Dec 2015	35	69	10	114
Jan 2016	52	23	4	79
Feb 2016	41	25	2	68
Mar 2016	32	49	0	81
Apr 2016	15	23	0	38
May 2016	12	9	0	21
Jun 2016	10	4	1	15
Jul 2016	11	2	3	16
Aug 2016	16	7	0	23
Sep 2016	12	1	0	13
Oct 2016	7	5	1	13
Nov 2016	11	6	0	17
Dec 2016	7	4	0	11
Jan 2017	19	6	1	26
Feb 2017	15	6	1	22
Mar 2017	22	19	1	42
Apr 2017	35	45	0	80
May 2017	35	25	2	62
Jun 2017	27	5	1	33
Jul 2017	26	11	0	37
Aug 2017	11	11	0	22
Sep 2017	13	20	1	34
Oct 2017	17	17	0	34
Nov 2017	7	11	0	18
Dec 2017	7	10	0	17
Jan 2018	10	11	0	21
Feb 2018	7	4	0	11
Mar 2018	12	18	0	30
Apr 2018	9	17	0	26
May 2018	16	17	1	34
Jun 2018	9	23	1	33
Jul 2018	14	19	0	33
Aug 2018	15	12	0	27
Sep 2018	15	20	0	35
Oct 2018	21	21	1	43
Nov 2018	22	29	4	55
Dec 2018	7	9	1	17
Jan 2019	7	13	1	21
Feb 2019	3	10	0	13
Mar 2019	9	15	2	26
Apr 2019	10	10	0	20
May 2019	14	14	1	29
Jun 2019	9	12	1	22
Jul 2019	9	9	0	18
Aug 2019	8	11	0	19
Sep 2019	10	4	0	14
Oct 2019	12	13	1	26
Nov 2019	9	10	0	19
Dec 2019	9	7	0	16
Jan 2020	12	7	0	19
Feb 2020	16	3	0	19
Mar 2020	5	2	1	8
Apr 2020	7	7	0	14
May 2020	9	5	0	14
Jun 2020	20	8	0	28
Jul 2020	20	11	6	37
Aug 2020	14	5	2	21
Sep 2020	7	4	1	12
Oct 2020	7	8	0	15
Nov 2020	7	8	1	16
Dec 2020	10	10	2	22
Jan 2021	19	16	0	35
Feb 2021	16	10	0	26
Mar 2021	8	12	1	21
Apr 2021	15	18	1	34
May 2021	11	8	1	20
Jun 2021	8	9	0	17
Jul 2021	11	10	0	21
Aug 2021	13	8	0	21
Sep 2021	20	13	0	33
Oct 2021	25	38	2	65
Nov 2021	19	23	0	42
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Jan 2022	13	13	0	26
Feb 2022	18	9	2	29
Mar 2022	20	7	0	27
Apr 2022	31	6	1	38
May 2022	16	6	2	24
Jun 2022	10	5	0	15
Jul 2022	5	8	1	14
Aug 2022	15	9	0	24
Sep 2022	5	5	1	11
Oct 2022	16	9	2	27
Nov 2022	30	6	1	37
Dec 2022	12	6	0	18
Jan 2023	24	13	1	38
Feb 2023	23	14	0	37
Mar 2023	30	16	1	47
Apr 2023	42	12	2	56
May 2023	40	13	0	53
Jun 2023	43	6	2	51
Jul 2023	46	10	1	57
Aug 2023	48	9	2	59
Sep 2023	46	5	2	53
Oct 2023	54	11	3	68
Nov 2023	31	6	0	37
Dec 2023	56	7	5	68
Jan 2024	47	5	0	52
Feb 2024	42	13	2	57
Mar 2024	44	16	1	61
Apr 2024	36	14	3	53
May 2024	25	17	5	47
Jun 2024	23	11	2	36
Jul 2024	19	10	3	32
Aug 2024	51	22	1	74
Sep 2024	14	8	0	22
Oct 2024	26	14	0	40
Nov 2024	14	13	3	30
Dec 2024	17	11	0	28
Jan 2025	15	21	0	36
Feb 2025	47	19	6	72
Mar 2025	33	5	1	39
Apr 2025	13	13	6	32
May 2025	35	12	1	48
Jun 2025	67	13	1	81
Jul 2025	38	16	1	55
Aug 2025	48	16	3	67
Sep 2025	62	23	2	87
Oct 2025	35	27	0	62
Nov 2025	42	16	3	61
Dec 2025	6	6	0	12

Cumulative views and downloads (calculated since 01 Jul 2015)

Month	HTML	PDF	XML	Total
Jul 2015	72	154	7	233
Aug 2015	33	47	3	83
Sep 2015	19	37	1	57
Oct 2015	20	16	2	38
Nov 2015	161	153	17	331
Dec 2015	35	69	10	114
Jan 2016	52	23	4	79
Feb 2016	41	25	2	68
Mar 2016	32	49	0	81
Apr 2016	15	23	0	38
May 2016	12	9	0	21
Jun 2016	10	4	1	15
Jul 2016	11	2	3	16
Aug 2016	16	7	0	23
Sep 2016	12	1	0	13
Oct 2016	7	5	1	13
Nov 2016	11	6	0	17
Dec 2016	7	4	0	11
Jan 2017	19	6	1	26
Feb 2017	15	6	1	22
Mar 2017	22	19	1	42
Apr 2017	35	45	0	80
May 2017	35	25	2	62
Jun 2017	27	5	1	33
Jul 2017	26	11	0	37
Aug 2017	11	11	0	22
Sep 2017	13	20	1	34
Oct 2017	17	17	0	34
Nov 2017	7	11	0	18
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Feb 2018	7	4	0	11
Mar 2018	12	18	0	30
Apr 2018	9	17	0	26
May 2018	16	17	1	34
Jun 2018	9	23	1	33
Jul 2018	14	19	0	33
Aug 2018	15	12	0	27
Sep 2018	15	20	0	35
Oct 2018	21	21	1	43
Nov 2018	22	29	4	55
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Jan 2019	7	13	1	21
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Aug 2021	13	8	0	21
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Oct 2021	25	38	2	65
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Nov 2022	30	6	1	37
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Jan 2023	24	13	1	38
Feb 2023	23	14	0	37
Mar 2023	30	16	1	47
Apr 2023	42	12	2	56
May 2023	40	13	0	53
Jun 2023	43	6	2	51
Jul 2023	46	10	1	57
Aug 2023	48	9	2	59
Sep 2023	46	5	2	53
Oct 2023	54	11	3	68
Nov 2023	31	6	0	37
Dec 2023	56	7	5	68
Jan 2024	47	5	0	52
Feb 2024	42	13	2	57
Mar 2024	44	16	1	61
Apr 2024	36	14	3	53
May 2024	25	17	5	47
Jun 2024	23	11	2	36
Jul 2024	19	10	3	32
Aug 2024	51	22	1	74
Sep 2024	14	8	0	22
Oct 2024	26	14	0	40
Nov 2024	14	13	3	30
Dec 2024	17	11	0	28
Jan 2025	15	21	0	36
Feb 2025	47	19	6	72
Mar 2025	33	5	1	39
Apr 2025	13	13	6	32
May 2025	35	12	1	48
Jun 2025	67	13	1	81
Jul 2025	38	16	1	55
Aug 2025	48	16	3	67
Sep 2025	62	23	2	87
Oct 2025	35	27	0	62
Nov 2025	42	16	3	61
Dec 2025	6	6	0	12

Latest update: 06 Dec 2025

Short summary

This study attempts to determine the consequences of the changes in tropospheric aerosol burden arising from substantial reductions in emissions of SO2 and NOx associated with control measures under the Clean Air Act especially on trends in solar radiation. Comparisons of model results with observations of aerosol optical depth, aerosol concentration, and radiation demonstrate that the coupled WRF-CMAQ model is capable of replicating the trends well even though it tends to underestimate the AOD.