Articles | Volume 19, issue 20
Atmos. Chem. Phys., 19, 13289–13308, 2019
https://doi.org/10.5194/acp-19-13289-2019
Atmos. Chem. Phys., 19, 13289–13308, 2019
https://doi.org/10.5194/acp-19-13289-2019

Research article 28 Oct 2019

Research article | 28 Oct 2019

Semi-quantitative understanding of source contribution to nitrous acid (HONO) based on 1 year of continuous observation at the SORPES station in eastern China

Yuliang Liu et al.

Data sets

OMI/Aura TOMS-Like Ozone and Radiative Cloud Fraction L3 1 day 0.25 degree × 0.25 degree V3, NASA Goddard Space Flight Center P. K. Bhartia https://doi.org/10.5067/Aura/OMI/DATA3002

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Short summary
We conducted 1-year continuous measurement of HONO at the SORPES station. We obtained seasonal and diurnal variations of HONO and evaluated the contribution of HONO photolysis to OH radical and the missing daytime source of HONO. We separated the sources of nocturnal HONO into four parts: combustion emissions, soil emission, formation on ground and formation on aerosol, and estimate their contribution semi-quantitatively. The results highlighted ever-changing contributions of HONO sources.
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