title: Reconstruction of atmospheric soot history in inland regions from lake sediments over the past 150 years.
abstract: Historical reconstruction of atmospheric black carbon (BC, in the form of char and soot) is still constrained for inland areas. Here we determined and compared the past 150-yr records of BC and polycyclic aromatic compounds (PACs) in sediments from two representative lakes, Huguangyan (HGY) and Chaohu (CH), in eastern China. HGY only receives atmospheric deposition while CH is influenced by riverine input. BC, char, and soot have similar vertical concentration profiles as PACs in both lakes. Abrupt increases in concentrations and mass accumulation rates (MARs) of soot have mainly occurred since ~1950, the establishment of the People's Republic of China, when energy usage changed to more fossil fuel contributions reflected by the variations in the concentration ratios of char/soot and individual PACs. In HGY, soot MARs increased by ~7.7 times in the period 1980-2012 relative to the period 1850-1950. Similar increases (~6.7 times) were observed in CH. The increase in soot MARs is also in line with the emission inventory records in the literature and the fact that the submicrometer-sized soot particles can be dispersed regionally. The study provides an alternative method to reconstruct the atmospheric soot history in populated inland areas.
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.|Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.|Joint Center for Global Change Studies, Beijing 100875, China.
authors.forename: Y M
authors.initials: YM
authors.lastname: Han
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.|SCDRC, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
authors.forename: C
authors.initials: C
authors.lastname: Wei
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.|Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI), 5232 Villigen, Switzerland.
authors.forename: R-J
authors.initials: RJ
authors.lastname: Huang
authors.affiliation: Institute of Geography, University of Bern, Hallerstrasse 12, 3012 Bern, Switzerland.|Oeschger Centre for Climate Change Research, University of Bern, Falkenplatz 16, 3012 Bern, Switzerland.
authors.forename: B A M
authors.initials: BA
authors.lastname: Bandowe
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.|Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA.
authors.forename: S S H
authors.initials: SS
authors.lastname: Ho
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
authors.forename: J J
authors.initials: JJ
authors.lastname: Cao
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
authors.forename: Z D
authors.initials: ZD
authors.lastname: Jin
authors.affiliation: KLTECLSP, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: B Q
authors.initials: BQ
authors.lastname: Xu
authors.affiliation: KLTECLSP, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: S P
authors.initials: SP
authors.lastname: Gao
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.
authors.forename: X X
authors.initials: XX
authors.lastname: Tie
authors.affiliation: KLACP and SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China.|Joint Center for Global Change Studies, Beijing 100875, China.
authors.forename: Z S
authors.initials: ZS
authors.lastname: An
authors.affiliation: Institute of Geography and Geoecology, Karlsruhe Institute of Technology (KIT), Reinhard-Baumeister-Platz 1, 76131 Karlsruhe, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Wilcke