Evaluation of the Community Multiscale Air Quality (CMAQ) model v5.0 against size-resolved measurements of inorganic particle composition across sites in North America

Nolte, C. G.; Appel, K. W.; Kelly, J. T.; Bhave, P. V.; Fahey, K. M.; Collett, J. L. Jr.; Zhang, L.; Young, J. O.

doi:10.5194/gmd-8-2877-2015

Articles | Volume 8, issue 9

https://doi.org/10.5194/gmd-8-2877-2015

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

https://doi.org/10.5194/gmd-8-2877-2015

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

Articles | Volume 8, issue 9

Development and technical paper

|

15 Sep 2015

Development and technical paper |

| 15 Sep 2015

Evaluation of the Community Multiscale Air Quality (CMAQ) model v5.0 against size-resolved measurements of inorganic particle composition across sites in North America

C. G. Nolte, K. W. Appel, J. T. Kelly, P. V. Bhave, K. M. Fahey, J. L. Collett Jr., L. Zhang, and J. O. Young

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May 2015	31	42	1	74
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Sep 2015	100	73	4	177
Oct 2015	36	21	2	59
Nov 2015	16	13	1	30
Dec 2015	10	17	0	27
Jan 2016	24	21	1	46
Feb 2016	12	21	1	34
Mar 2016	18	11	0	29
Apr 2016	6	11	0	17
May 2016	11	17	1	29
Jun 2016	11	7	4	22
Jul 2016	12	5	4	21
Aug 2016	14	7	4	25
Sep 2016	9	7	1	17
Oct 2016	10	5	2	17
Nov 2016	10	4	1	15
Dec 2016	7	7	0	14
Jan 2017	16	14	2	32
Feb 2017	18	8	2	28
Mar 2017	36	26	6	68
Apr 2017	32	24	2	58
May 2017	54	22	5	81
Jun 2017	30	21	5	56
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Aug 2017	3	10	0	13
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Mar 2018	7	9	0	16
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Jun 2018	6	9	0	15
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Apr 2019	11	8	0	19
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Dec 2019	18	6	0	24
Jan 2020	18	10	1	29
Feb 2020	16	20	0	36
Mar 2020	10	16	1	27
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Mar 2023	66	8	2	76
Apr 2023	37	8	0	45
May 2023	39	12	0	51
Jun 2023	40	12	2	54
Jul 2023	36	5	0	41
Aug 2023	43	15	3	61
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Oct 2023	40	5	0	45
Nov 2023	25	1	0	26
Dec 2023	56	7	2	65
Jan 2024	53	6	1	60
Feb 2024	43	15	1	59
Mar 2024	45	22	2	69
Apr 2024	57	16	2	75
May 2024	20	13	3	36
Jun 2024	19	16	1	36
Jul 2024	16	5	2	23
Aug 2024	23	1	2	26
Sep 2024	20	4	0	24
Oct 2024	19	11	1	31
Nov 2024	13	5	2	20
Dec 2024	15	7	0	22
Jan 2025	20	13	0	33
Feb 2025	49	11	3	63
Mar 2025	23	14	0	37
Apr 2025	23	21	1	45
May 2025	31	9	0	40
Jun 2025	50	11	4	65
Jul 2025	31	19	1	51
Aug 2025	32	22	3	57
Sep 2025	47	17	0	64
Oct 2025	29	26	3	58
Nov 2025	19	21	1	41

Cumulative views and downloads (calculated since 19 May 2015)

Month	HTML	PDF	XML	Total
May 2015	31	42	1	74
Jun 2015	21	18	1	40
Jul 2015	20	13	0	33
Aug 2015	9	10	0	19
Sep 2015	100	73	4	177
Oct 2015	36	21	2	59
Nov 2015	16	13	1	30
Dec 2015	10	17	0	27
Jan 2016	24	21	1	46
Feb 2016	12	21	1	34
Mar 2016	18	11	0	29
Apr 2016	6	11	0	17
May 2016	11	17	1	29
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Aug 2016	14	7	4	25
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Feb 2017	18	8	2	28
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Oct 2023	40	5	0	45
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Jan 2025	20	13	0	33
Feb 2025	49	11	3	63
Mar 2025	23	14	0	37
Apr 2025	23	21	1	45
May 2025	31	9	0	40
Jun 2025	50	11	4	65
Jul 2025	31	19	1	51
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Sep 2025	47	17	0	64
Oct 2025	29	26	3	58
Nov 2025	19	21	1	41

Latest update: 18 Nov 2025

Short summary

This study is the most comprehensive evaluation of CMAQ inorganic aerosol size-composition distributions conducted to date. We compare two methods of inferring PM2.5 concentrations from the model: (1) based on the sum of the masses in the fine aerosol modes, as is most commonly done in CMAQ model evaluation; and (2) computed using the simulated size distributions. Differences are generally less than 1 microgram/m3, and are largest over the eastern USA during the summer.