Increased inorganic aerosol fraction contributes to air pollution and haze in China

Yonghong Wang, Yuesi Wang, Lili Wang, Tuukka Petäjä, Qiaozhi Zha, Chongshui Gong, Sixuan Li, Yuepeng Pan, Bo Hu, Jinyuan Xin, Markku Kulmala

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Kuvaus

The detailed formation mechanism of an increased number of haze events in China is still not very clear. Here, we found that reduced surface visibility from 1980 to 2010 and an increase in satellite-derived columnar concentrations of inorganic precursors from 2002 to 2012 are connected with each other. Typically, higher inorganic mass fractions lead to increased aerosol water uptake and light-scattering ability in elevated relative humidity. Satellite observation of aerosol precursors of NO2 and SO2 showed increased concentrations during the study period. Our in situ measurement of aerosol chemical composition in Beijing also confirmed increased contribution of inorganic aerosol fraction as a function of the increased particle pollution level. Our investigations demonstrate that the increased inorganic fraction in the aerosol particles is a key component in the frequently occurring haze days during the study period, and particularly the reduction of nitrate, sulfate and their precursor gases would contribute towards better visibility in China.
Alkuperäiskielienglanti
LehtiAtmospheric Chemistry and Physics
Vuosikerta19
Numero9
Sivut5881-5888
Sivumäärä8
ISSN1680-7316
DOI - pysyväislinkit
TilaJulkaistu - 3 toukokuuta 2019
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 114 Fysiikka

Lainaa tätä

Wang, Yonghong ; Wang, Yuesi ; Wang, Lili ; Petäjä, Tuukka ; Zha, Qiaozhi ; Gong, Chongshui ; Li, Sixuan ; Pan, Yuepeng ; Hu, Bo ; Xin, Jinyuan ; Kulmala, Markku. / Increased inorganic aerosol fraction contributes to air pollution and haze in China. Julkaisussa: Atmospheric Chemistry and Physics. 2019 ; Vuosikerta 19, Nro 9. Sivut 5881-5888.
@article{bd81e6a0c413450ca4791ab5c7f0e3fb,
title = "Increased inorganic aerosol fraction contributes to air pollution and haze in China",
abstract = "The detailed formation mechanism of an increased number of haze events in China is still not very clear. Here, we found that reduced surface visibility from 1980 to 2010 and an increase in satellite-derived columnar concentrations of inorganic precursors from 2002 to 2012 are connected with each other. Typically, higher inorganic mass fractions lead to increased aerosol water uptake and light-scattering ability in elevated relative humidity. Satellite observation of aerosol precursors of NO2 and SO2 showed increased concentrations during the study period. Our in situ measurement of aerosol chemical composition in Beijing also confirmed increased contribution of inorganic aerosol fraction as a function of the increased particle pollution level. Our investigations demonstrate that the increased inorganic fraction in the aerosol particles is a key component in the frequently occurring haze days during the study period, and particularly the reduction of nitrate, sulfate and their precursor gases would contribute towards better visibility in China.",
keywords = "TROPOSPHERIC NITROGEN-DIOXIDE, TRENDS, PARTICLES, EPISODE, SPACE, FOG, 114 Physical sciences",
author = "Yonghong Wang and Yuesi Wang and Lili Wang and Tuukka Pet{\"a}j{\"a} and Qiaozhi Zha and Chongshui Gong and Sixuan Li and Yuepeng Pan and Bo Hu and Jinyuan Xin and Markku Kulmala",
year = "2019",
month = "5",
day = "3",
doi = "10.5194/acp-19-5881-2019",
language = "English",
volume = "19",
pages = "5881--5888",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "COPERNICUS GESELLSCHAFT MBH",
number = "9",

}

Increased inorganic aerosol fraction contributes to air pollution and haze in China. / Wang, Yonghong; Wang, Yuesi; Wang, Lili; Petäjä, Tuukka; Zha, Qiaozhi; Gong, Chongshui; Li, Sixuan; Pan, Yuepeng; Hu, Bo; Xin, Jinyuan; Kulmala, Markku.

julkaisussa: Atmospheric Chemistry and Physics, Vuosikerta 19, Nro 9, 03.05.2019, s. 5881-5888.

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - Increased inorganic aerosol fraction contributes to air pollution and haze in China

AU - Wang, Yonghong

AU - Wang, Yuesi

AU - Wang, Lili

AU - Petäjä, Tuukka

AU - Zha, Qiaozhi

AU - Gong, Chongshui

AU - Li, Sixuan

AU - Pan, Yuepeng

AU - Hu, Bo

AU - Xin, Jinyuan

AU - Kulmala, Markku

PY - 2019/5/3

Y1 - 2019/5/3

N2 - The detailed formation mechanism of an increased number of haze events in China is still not very clear. Here, we found that reduced surface visibility from 1980 to 2010 and an increase in satellite-derived columnar concentrations of inorganic precursors from 2002 to 2012 are connected with each other. Typically, higher inorganic mass fractions lead to increased aerosol water uptake and light-scattering ability in elevated relative humidity. Satellite observation of aerosol precursors of NO2 and SO2 showed increased concentrations during the study period. Our in situ measurement of aerosol chemical composition in Beijing also confirmed increased contribution of inorganic aerosol fraction as a function of the increased particle pollution level. Our investigations demonstrate that the increased inorganic fraction in the aerosol particles is a key component in the frequently occurring haze days during the study period, and particularly the reduction of nitrate, sulfate and their precursor gases would contribute towards better visibility in China.

AB - The detailed formation mechanism of an increased number of haze events in China is still not very clear. Here, we found that reduced surface visibility from 1980 to 2010 and an increase in satellite-derived columnar concentrations of inorganic precursors from 2002 to 2012 are connected with each other. Typically, higher inorganic mass fractions lead to increased aerosol water uptake and light-scattering ability in elevated relative humidity. Satellite observation of aerosol precursors of NO2 and SO2 showed increased concentrations during the study period. Our in situ measurement of aerosol chemical composition in Beijing also confirmed increased contribution of inorganic aerosol fraction as a function of the increased particle pollution level. Our investigations demonstrate that the increased inorganic fraction in the aerosol particles is a key component in the frequently occurring haze days during the study period, and particularly the reduction of nitrate, sulfate and their precursor gases would contribute towards better visibility in China.

KW - TROPOSPHERIC NITROGEN-DIOXIDE

KW - TRENDS

KW - PARTICLES

KW - EPISODE

KW - SPACE

KW - FOG

KW - 114 Physical sciences

U2 - 10.5194/acp-19-5881-2019

DO - 10.5194/acp-19-5881-2019

M3 - Article

VL - 19

SP - 5881

EP - 5888

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 9

ER -