@article{c79719c3972e4eb9a630618dd7a1a896,
title = "Sources and Radiative Absorption of Water-Soluble Brown Carbon in the High Arctic Atmosphere",
abstract = "Brown carbon (BrC) is a source of light-absorbing aerosols. The Arctic is more sensitive to emissions of light-absorbing aerosols than lower latitudes. Knowledge of BrC in a historical period is beneficial to understand its role in a changing climate. Here, we present measurement of water-soluble BrC (WS-BrC) for the Arctic aerosols during late winter-late spring in 1991. Mass absorption coefficient (0.07 ± 0.04 M/m) and efficiency (0.41 ± 0.21 m2/g) at 365 nm of WS-BrC were lower than those in polluted urban and rural regions. WS-BrC was mainly from biomass burning/combustion (dark winter to mid-March) and marine sources connected with photochemical gas to particle conversion (after polar sunrise to June). Solar radiative absorption of WS-BrC relative to elemental carbon was 5% on average in February to April and surged to 34% after mid-May. This study helps in understanding the role of BrC in the Arctic climate.",
keywords = "biomass burning, brown carbon, Canadian high Arctic, fossil fuel combustion, organic aerosol",
author = "Siyao Yue and Srinivas Bikkina and Meng Gao and Barrie, {Leonard A.} and Kimitaka Kawamura and Pingqing Fu",
note = "Funding Information: supporting information supporting information The authors declare no competing financial interest. This study was in part supported by the National Natural Science Foundation of China (Grant 41625014). We wish to thank Environment Canada and staff including Sangeeta Sharma and Desiree Toom‐Sauntry for kindly collecting these samples at Alert in 1991; this cooperative program was led by Leonard Barrie, a coauthor, while employed by Environment Canada. Supporting descriptions of analytical methods and figures are in the . The data used in this manuscript are listed in the tables, figures, and . The important data supporting the conclusion of the paper are available in the data repository website ( https://zenodo.org/record/3565703 ). Funding Information: The authors declare no competing financial interest. This study was in part supported by the National Natural Science Foundation of China (Grant 41625014). We wish to thank Environment Canada and staff including Sangeeta Sharma and Desiree Toom-Sauntry for kindly collecting these samples at Alert in 1991; this cooperative program was led by Leonard Barrie, a coauthor, while employed by Environment Canada. Supporting descriptions of analytical methods and figures are in the supporting information. The data used in this manuscript are listed in the tables, figures, and supporting information. The important data supporting the conclusion of the paper are available in the data repository website (https://zenodo.org/record/3565703).",
year = "2019",
month = dec,
day = "28",
doi = "10.1029/2019GL085318",
language = "English",
volume = "46",
pages = "14881--14891",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "Wiley-Blackwell",
number = "24",
}
