Understanding sources of organic aerosol during CalNex-2010 using the CMAQ-VBS

Woody, Matthew C.; Baker, Kirk R.; Hayes, Patrick L.; Jimenez, Jose L.; Koo, Bonyoung; Pye, Havala O. T.

doi:10.5194/acp-16-4081-2016

Articles | Volume 16, issue 6

https://doi.org/10.5194/acp-16-4081-2016

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

https://doi.org/10.5194/acp-16-4081-2016

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

Articles | Volume 16, issue 6

Research article

|

29 Mar 2016

Research article |

| 29 Mar 2016

Understanding sources of organic aerosol during CalNex-2010 using the CMAQ-VBS

Matthew C. Woody, Kirk R. Baker, Patrick L. Hayes, Jose L. Jimenez, Bonyoung Koo, and Havala O. T. Pye

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Jul 2016	15	10	2	27
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Jan 2017	26	15	1	42
Feb 2017	27	17	2	46
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Apr 2025	32	22	3	57
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Oct 2025	29	30	0	59
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Cumulative views and downloads (calculated since 05 Oct 2015)

Month	HTML	PDF	XML	Total
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Nov 2015	34	32	10	76
Dec 2015	27	28	7	62
Jan 2016	45	24	2	71
Feb 2016	33	20	2	55
Mar 2016	155	62	0	217
Apr 2016	95	71	4	170
May 2016	32	34	1	67
Jun 2016	22	20	1	43
Jul 2016	15	10	2	27
Aug 2016	9	9	0	18
Sep 2016	13	9	2	24
Oct 2016	12	10	6	28
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Dec 2016	5	5	1	11
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Feb 2017	27	17	2	46
Mar 2017	44	20	2	66
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May 2017	44	30	0	74
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Jan 2025	38	13	0	51
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Jul 2025	41	24	1	66
Aug 2025	56	23	1	80
Sep 2025	74	18	2	94
Oct 2025	29	30	0	59
Nov 2025	17	10	0	27

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Short summary

In this work, organic aerosol (OA) predictions from the volatility basis set (VBS) module in the CMAQ photochemical transport model were evaluated against routine monitoring data and measurements collected during the 2010 CalNex field study. We found that the VBS module more accurately reproduced the observed primary/secondary OA split and secondary OA (SOA) mass at the CalNex Pasadena ground site compared to the traditional CMAQ OA module but still underpredicted observed SOA by ~ 5.2 ×.