Sources and light absorption of water-soluble organic carbon aerosols in the outflow from northern China

E. N. Kirillova, A. Andersson, J. Han, Meehye Lee, Ö Gustafsson

Research output: Contribution to journalArticle

97 Citations (Scopus)

Abstract

High loadings of anthropogenic carbonaceous aerosols in Chinese air influence the air quality for over one billion people and impact the regional climate. A large fraction (17-80%) of this aerosol carbon is water-soluble, promoting cloud formation and thus climate cooling. Recent findings, however, suggest that water-soluble carbonaceous aerosols also absorb sunlight, bringing additional direct and indirect climate warming effects, yet the extent and nature of light absorption by this water-soluble "brown carbon" and its relation to sources is poorly understood. Here, we combine source estimates constrained by dual carbon isotopes with light-absorption measurements of water-soluble organic carbon (WSOC) for a March 2011 campaign at the Korea Climate Observatory at Gosan (KCOG), a receptor station in SE Yellow Sea for the outflow from northern China. The mass absorption cross section at 365 nm (MAC365) of WSOC for air masses from N. China were in general higher (0.8-1.1 m2 g-1), than from other source regions (0.3-0.8 m2 g-1). However, this effect corresponds to only 2-10% of the radiative forcing caused by light absorption by elemental carbon. Radiocarbon constraints show that the WSOC in Chinese outflow had significantly higher fraction fossil sources (30-50%) compared to previous findings in S. Asia, N. America and Europe. Stable carbon (δ13C) measurements were consistent with aging during long-range air mass transport for this large fraction of carbonaceous aerosols.

Original languageEnglish
Pages (from-to)1413-1422
Number of pages10
JournalAtmospheric Chemistry and Physics
Volume14
Issue number3
DOIs
Publication statusPublished - 2014 Feb 7

Fingerprint

outflow
organic carbon
aerosol
water
air mass
carbon
climate
radiative forcing
mass transport
regional climate
carbon isotope
air quality
observatory
warming
cross section
fossil
cooling
air
effect

ASJC Scopus subject areas

  • Atmospheric Science

Cite this

Sources and light absorption of water-soluble organic carbon aerosols in the outflow from northern China. / Kirillova, E. N.; Andersson, A.; Han, J.; Lee, Meehye; Gustafsson, Ö.

In: Atmospheric Chemistry and Physics, Vol. 14, No. 3, 07.02.2014, p. 1413-1422.

Research output: Contribution to journalArticle

Kirillova, E. N. ; Andersson, A. ; Han, J. ; Lee, Meehye ; Gustafsson, Ö. / Sources and light absorption of water-soluble organic carbon aerosols in the outflow from northern China. In: Atmospheric Chemistry and Physics. 2014 ; Vol. 14, No. 3. pp. 1413-1422.
@article{ccf43680022748aba96792aa5d217ea2,
title = "Sources and light absorption of water-soluble organic carbon aerosols in the outflow from northern China",
abstract = "High loadings of anthropogenic carbonaceous aerosols in Chinese air influence the air quality for over one billion people and impact the regional climate. A large fraction (17-80{\%}) of this aerosol carbon is water-soluble, promoting cloud formation and thus climate cooling. Recent findings, however, suggest that water-soluble carbonaceous aerosols also absorb sunlight, bringing additional direct and indirect climate warming effects, yet the extent and nature of light absorption by this water-soluble {"}brown carbon{"} and its relation to sources is poorly understood. Here, we combine source estimates constrained by dual carbon isotopes with light-absorption measurements of water-soluble organic carbon (WSOC) for a March 2011 campaign at the Korea Climate Observatory at Gosan (KCOG), a receptor station in SE Yellow Sea for the outflow from northern China. The mass absorption cross section at 365 nm (MAC365) of WSOC for air masses from N. China were in general higher (0.8-1.1 m2 g-1), than from other source regions (0.3-0.8 m2 g-1). However, this effect corresponds to only 2-10{\%} of the radiative forcing caused by light absorption by elemental carbon. Radiocarbon constraints show that the WSOC in Chinese outflow had significantly higher fraction fossil sources (30-50{\%}) compared to previous findings in S. Asia, N. America and Europe. Stable carbon (δ13C) measurements were consistent with aging during long-range air mass transport for this large fraction of carbonaceous aerosols.",
author = "Kirillova, {E. N.} and A. Andersson and J. Han and Meehye Lee and {\"O} Gustafsson",
year = "2014",
month = "2",
day = "7",
doi = "10.5194/acp-14-1413-2014",
language = "English",
volume = "14",
pages = "1413--1422",
journal = "Atmospheric Chemistry and Physics",
issn = "1680-7316",
publisher = "European Geosciences Union",
number = "3",

}

TY - JOUR

T1 - Sources and light absorption of water-soluble organic carbon aerosols in the outflow from northern China

AU - Kirillova, E. N.

AU - Andersson, A.

AU - Han, J.

AU - Lee, Meehye

AU - Gustafsson, Ö

PY - 2014/2/7

Y1 - 2014/2/7

N2 - High loadings of anthropogenic carbonaceous aerosols in Chinese air influence the air quality for over one billion people and impact the regional climate. A large fraction (17-80%) of this aerosol carbon is water-soluble, promoting cloud formation and thus climate cooling. Recent findings, however, suggest that water-soluble carbonaceous aerosols also absorb sunlight, bringing additional direct and indirect climate warming effects, yet the extent and nature of light absorption by this water-soluble "brown carbon" and its relation to sources is poorly understood. Here, we combine source estimates constrained by dual carbon isotopes with light-absorption measurements of water-soluble organic carbon (WSOC) for a March 2011 campaign at the Korea Climate Observatory at Gosan (KCOG), a receptor station in SE Yellow Sea for the outflow from northern China. The mass absorption cross section at 365 nm (MAC365) of WSOC for air masses from N. China were in general higher (0.8-1.1 m2 g-1), than from other source regions (0.3-0.8 m2 g-1). However, this effect corresponds to only 2-10% of the radiative forcing caused by light absorption by elemental carbon. Radiocarbon constraints show that the WSOC in Chinese outflow had significantly higher fraction fossil sources (30-50%) compared to previous findings in S. Asia, N. America and Europe. Stable carbon (δ13C) measurements were consistent with aging during long-range air mass transport for this large fraction of carbonaceous aerosols.

AB - High loadings of anthropogenic carbonaceous aerosols in Chinese air influence the air quality for over one billion people and impact the regional climate. A large fraction (17-80%) of this aerosol carbon is water-soluble, promoting cloud formation and thus climate cooling. Recent findings, however, suggest that water-soluble carbonaceous aerosols also absorb sunlight, bringing additional direct and indirect climate warming effects, yet the extent and nature of light absorption by this water-soluble "brown carbon" and its relation to sources is poorly understood. Here, we combine source estimates constrained by dual carbon isotopes with light-absorption measurements of water-soluble organic carbon (WSOC) for a March 2011 campaign at the Korea Climate Observatory at Gosan (KCOG), a receptor station in SE Yellow Sea for the outflow from northern China. The mass absorption cross section at 365 nm (MAC365) of WSOC for air masses from N. China were in general higher (0.8-1.1 m2 g-1), than from other source regions (0.3-0.8 m2 g-1). However, this effect corresponds to only 2-10% of the radiative forcing caused by light absorption by elemental carbon. Radiocarbon constraints show that the WSOC in Chinese outflow had significantly higher fraction fossil sources (30-50%) compared to previous findings in S. Asia, N. America and Europe. Stable carbon (δ13C) measurements were consistent with aging during long-range air mass transport for this large fraction of carbonaceous aerosols.

UR - http://www.scopus.com/inward/record.url?scp=84893864853&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893864853&partnerID=8YFLogxK

U2 - 10.5194/acp-14-1413-2014

DO - 10.5194/acp-14-1413-2014

M3 - Article

AN - SCOPUS:84893864853

VL - 14

SP - 1413

EP - 1422

JO - Atmospheric Chemistry and Physics

JF - Atmospheric Chemistry and Physics

SN - 1680-7316

IS - 3

ER -