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ACP | Articles | Volume 19, issue 10
Atmos. Chem. Phys., 19, 6717–6736, 2019
https://doi.org/10.5194/acp-19-6717-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Chem. Phys., 19, 6717–6736, 2019
https://doi.org/10.5194/acp-19-6717-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 May 2019

Research article | 20 May 2019

Primary and secondary sources of ambient formaldehyde in the Yangtze River Delta based on Ozone Mapping and Profiler Suite (OMPS) observations

Wenjing Su et al.

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Cited articles

Altshuller, A.: Production of aldehydes as primary emissions and from secondary atmospheric reactions of alkenes and alkanes during the night and early morning hours, Atmos. Environ. A-Gen, 27, 21–32, https://doi.org/10.1016/0960-1686(93)90067-9, 1993. 
Anderson, D., Nicely, J., Salawitch, R., Wolfe, G., Hanisco, T., Dickerson, R., Canty, T., and Li, C.: Evaluation of satellite HCHO retrievals over the tropical western Pacific and United States, 2016 AGU Fall Meeting, San Francisco, USA, 12–15 December 2016, 3–7, 2016. 
Anderson, L. G., Lanning, J. A., Barrell, R., Miyagishima, J., Jones, R. H., and Wolfe, P.: Sources and sinks of formaldehyde and acetaldehyde: An analysis of Denver's ambient concentration data, Atmos. Environ., 30, 2113–2123, https://doi.org/10.1016/1352-2310(95)00175-1, 1996. 
Andreae, M. O. and Merlet, P.: Emission of trace gases and aerosols from biomass burning, Global Biogeochem. Cy., 15, 955–966, https://doi.org/10.1029/2000GB001382, 2001. 
Barrero, M., Orza, J., Cabello, M., and Cantón, L.: Categorisation of air quality monitoring stations by evaluation of PM10 variability, Sci. Total Environ., 524, 225–236, https://doi.org/10.1016/j.scitotenv.2015.03.138, 2015. 
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Short summary
For a better understanding of HCHO pollution and atmospheric chemistry, we evaluated primary and secondary sources of HCHO in the Yangtze River Delta based on HCHO column density from OMPS and combined this with in situ surface measurements. We found that secondary formation contributed most to ambient HCHO over longer timescales, but primary emission could be dominant in the winter. Hence, the usability of total HCHO as a proxy of VOC reactivity depends on the timescale of interest.
For a better understanding of HCHO pollution and atmospheric chemistry, we evaluated primary and...
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