2020
DOI: 10.5194/acp-20-4153-2020
|View full text |Cite
|
Sign up to set email alerts
|

Formation mechanisms of atmospheric nitrate and sulfate during the winter haze pollution periods in Beijing: gas-phase, heterogeneous and aqueous-phase chemistry

Abstract: Abstract. A vast area in China is currently going through severe haze episodes with drastically elevated concentrations of PM2.5 in winter. Nitrate and sulfate are the main constituents of PM2.5, but their formations via NO2 and SO2 oxidation are still not comprehensively understood, especially under different pollution or atmospheric relative humidity (RH) conditions. To elucidate formation pathways of nitrate and sulfate in different polluted cases, hourly samples of PM2.5 were collected continuously in Beij… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

3
77
0

Year Published

2020
2020
2024
2024

Publication Types

Select...
10

Relationship

0
10

Authors

Journals

citations
Cited by 139 publications
(80 citation statements)
references
References 65 publications
3
77
0
Order By: Relevance
“…The definitions and values of these ratios are shown in Table S4. Our simulated SOR, NOR, and NHR values were in the range of values previously reported in wintertime observation studies over the NCP (Liu et al, 2020). Using the model emissions and the values in Table S4, we estimated the third term on the right-hand side of Eq.…”
Section: Cause Of the Ineffectiveness Of The Erms During The Severe Hmentioning
confidence: 73%
“…The definitions and values of these ratios are shown in Table S4. Our simulated SOR, NOR, and NHR values were in the range of values previously reported in wintertime observation studies over the NCP (Liu et al, 2020). Using the model emissions and the values in Table S4, we estimated the third term on the right-hand side of Eq.…”
Section: Cause Of the Ineffectiveness Of The Erms During The Severe Hmentioning
confidence: 73%
“…This is consistent with the increased wintertime oxidants in Figure 3a. More discussion about oxidation pathways in different phases is included in Text S8 (Liu & Wang, 2020; Liu et al, 2020; Tao et al, 2020; Wang, Chen, et al, 2019; Wang, Jacob, et al, 2019; Xue, Liu, et al, 2019; Xue, et al, 2019).…”
Section: Resultsmentioning
confidence: 99%
“…This is anticipated to be due to meteorological factors, such as stagnant air with little transport or vertical mixing in a low planetary boundary layer, which often occurs in winter, and high relative humidity. These meteorological factors are conducive to the formation of haze [51] and the intensification of the occurrence of haze in the NCP [52].…”
Section: Aodmentioning
confidence: 99%