This article was corrected on 9 JUN 2014. See the end of the full text for details.
Evidence of aqueous secondary organic aerosol formation from biogenic emissions in the North American Sonoran Desert
Article first published online: 1 JUL 2013
©2013. American Geophysical Union. All Rights Reserved.
Geophysical Research Letters
Volume 40, Issue 13, pages 3468–3472, 16 July 2013
How to Cite
2013), Evidence of aqueous secondary organic aerosol formation from biogenic emissions in the North American Sonoran Desert, Geophys. Res. Lett., 40, 3468–3472, doi:10.1002/grl.50644., , , , , and (
- Issue published online: 24 JUL 2013
- Article first published online: 1 JUL 2013
- Accepted manuscript online: 10 JUN 2013 10:41PM EST
- Manuscript Accepted: 9 JUN 2013
- Manuscript Revised: 1 JUN 2013
- Manuscript Received: 1 MAY 2013
 This study examines the role of aqueous secondary organic aerosol formation in the North American Sonoran Desert as a result of intense solar radiation, enhanced moisture, and biogenic volatile organic compounds (BVOCs). The ratio of water-soluble organic carbon (WSOC) to organic carbon (OC) nearly doubles during the monsoon season relative to other seasons of the year. When normalized by mixing height, the WSOC enhancement during monsoon months relative to preceding dry months (May–June) exceeds that of sulfate by nearly a factor of 10. WSOC:OC and WSOC are most strongly correlated with moisture parameters, temperature, and concentrations of O3 and BVOCs. No positive relationship was identified between WSOC or WSOC:OC and anthropogenic tracers such as CO over a full year. This study points at the need for further work to understand the effect of BVOCs and moisture in altering aerosol properties in understudied desert regions.