Divergent Evolution of Carbonaceous Aerosols during Dispersal of East Asian Haze.

ABSTRACT: Wintertime East Asia is plagued by severe haze episodes, characterized by large contributions of carbonaceous aerosols. However, the sources and atmospheric transformations of these major components are poorly constrained, hindering development of efficient mitigation strategies and detailed modelling of effects. Here we present dual carbon isotope (δ¹³C and Δ¹⁴C) signatures for black carbon (BC), organic carbon (OC) and water-soluble organic carbon (WSOC) aerosols collected in urban (Beijing and BC for Shanghai) and regional receptors (e.g., Korea Climate Observatory at Gosan) during January 2014. Fossil sources (>50%) dominate BC at all sites with most stemming from coal combustion, except for Shanghai, where liquid fossil source is largest. During source-to-recepto

SUBMITTER: Fang W 

PROVIDER: S-EPMC5585391 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature