DOI: 10.1002/2017JD028027
Scopus记录号: 2-s2.0-85040721806
论文题名: Seasonal Progression of the Deposition of Black Carbon by Snowfall at Ny-Ålesund, Spitsbergen
作者: Sinha P.R. ; Kondo Y. ; Goto-Azuma K. ; Tsukagawa Y. ; Fukuda K. ; Koike M. ; Ohata S. ; Moteki N. ; Mori T. ; Oshima N. ; Førland E.J. ; Irwin M. ; Gallet J.-C. ; Pedersen C.A.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 2 起始页码: 997
结束页码: 1016
语种: 英语
英文关键词: Arctic
; black carbon
; dry deposition
; falling snow
; snowpack
; wet deposition
Scopus关键词: aerosol
; albedo
; black carbon
; depth
; dry deposition
; photometer
; sampling
; seasonal variation
; size distribution
; snow water equivalent
; snowpack
; soot
; spatiotemporal analysis
; warming
; wet deposition
; Arctic
; Ny-Alesund
; Spitsbergen
; Svalbard
; Svalbard and Jan Mayen
英文摘要: Deposition of black carbon (BC) aerosol in the Arctic lowers snow albedo, thus contributing to warming in the region. However, the processes and impacts associated with BC deposition are poorly understood because of the scarcity and uncertainties of measurements of BC in snow with adequate spatiotemporal resolution. We sampled snowpack at two sites (11 m and 300 m above sea level) at Ny-Ålesund, Spitsbergen, in April 2013. We also collected falling snow near the surface with a windsock from September 2012 to April 2013. The size distribution of BC in snowpack and falling snow was measured using a single-particle soot photometer combined with a characterized nebulizer. The BC size distributions did not show significant variations with depth in the snowpack, suggesting stable size distributions in falling snow. The BC number and mass concentrations (CNBC and CMBC) at the two sites agreed to within 19% and 10%, respectively, despite the sites' different snow water equivalent (SWE) loadings. This indicates the small influence of the amount of SWE (or precipitation) on these quantities. Average CNBC and CMBC in snowpack and falling snow at nearly the same locations agreed to within 5% and 16%, after small corrections for artifacts associated with the sampling of the falling snow. This comparison shows that the dry deposition was a small contributor to the total BC deposition. CMBC were highest (2.4 ± 3.0 μg L−1) in December–February and lowest (1.2 ± 1.2 μg L−1) in September–November. ©2017. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114658
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Tokyo, Japan; Balloon Facility, Tata Institute of Fundamental Research, Hyderabad, India; National Institute of Polar Research, Tachikawa, Japan; SOKENDAI (The Graduate University of Advanced Studies), Hayama, Japan; Department of Physics, Faculty of Science Division I, Tokyo University of Science, Tokyo, Japan; Meteorological Research Institute, Tsukuba, Japan; Norwegian Meteorological Institute, Oslo, Norway; Cambustion Ltd, Cambridge, United Kingdom; Norwegian Polar Institute, Tromsø, Norway
Recommended Citation:
Sinha P.R.,Kondo Y.,Goto-Azuma K.,et al. Seasonal Progression of the Deposition of Black Carbon by Snowfall at Ny-Ålesund, Spitsbergen[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(2)