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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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We analyzed the characteristics and sources of HONO in the upper boundary layer and lower free troposphere in the North China Plain, based on the field measurements at Mount Tai. Higher-than-expected levels and broad daytime peaks of HONO were observed. Without presence of ground surfaces, aerosol surface plays a key role in the heterogeneous HONO formation at high altitudes. Models without additional HONO sources largely underestimated the oxidation processes in the elevation atmospheres.
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ACP | Articles | Volume 20, issue 20
Atmos. Chem. Phys., 20, 12115–12131, 2020
https://doi.org/10.5194/acp-20-12115-2020
Atmos. Chem. Phys., 20, 12115–12131, 2020
https://doi.org/10.5194/acp-20-12115-2020

Research article 26 Oct 2020

Research article | 26 Oct 2020

Sources of nitrous acid (HONO) in the upper boundary layer and lower free troposphere of the North China Plain: insights from the Mount Tai Observatory

Ying Jiang et al.

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Short summary
We analyzed the characteristics and sources of HONO in the upper boundary layer and lower free troposphere in the North China Plain, based on the field measurements at Mount Tai. Higher-than-expected levels and broad daytime peaks of HONO were observed. Without presence of ground surfaces, aerosol surface plays a key role in the heterogeneous HONO formation at high altitudes. Models without additional HONO sources largely underestimated the oxidation processes in the elevation atmospheres.
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Final-revised paper
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