气候变化领域集成服务门户(CCPortal): Seasonal Variation of Wet Deposition of Black Carbon at Ny-Ålesund, Svalbard

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DOI	10.1029/2020JD034110
	Seasonal Variation of Wet Deposition of Black Carbon at Ny-Ålesund, Svalbard
	Mori T.; Kondo Y.; Ohata S.; Goto-Azuma K.; Fukuda K.; Ogawa-Tsukagawa Y.; Moteki N.; Yoshida A.; Koike M.; Sinha P.R.; Oshima N.; Matsui H.; Tobo Y.; Yabuki M.; Aas W.
发表日期	2021
ISSN	2169897X
卷号	126 期号:12
英文摘要	Black carbon (BC) aerosol deposited in and onto Arctic snow increases the snow's absorption of solar radiation and accelerates snowmelt. Concentrations of BC in the Arctic atmosphere and snow are controlled by wet deposition; however, details of this process are poorly understood owing to the scarcity of time-resolved measurements of BC in hydrometeors. We measured mass concentrations of BC in hydrometeors (CMBC) and in air (MBC) with 16% and 15% accuracies, respectively, at Ny-Ålesund, Svalbard during 2012–2019. Median monthly MBC and CMBC values showed similar seasonal variations, being high in winter-spring and low in summer. Median monthly BC wet deposition mass flux (FMBC) was highest in winter and lowest in summer, associated with seasonal patterns of CMBC and precipitation. Seasonally averaged BC size distributions in hydrometeors were similar except for summer. Measurements of MBC and CMBC in spring 2017 showed a size-independent removal efficiency, indicating that BC-containing particles were efficiently activated into cloud droplets. These observations at Ny-Ålesund were compared with observations at Barrow, Alaska, during 2013–2017. The near-surface MBC at Ny-Ålesund and Barrow had similar seasonal patterns; however, the two sites differed in CMBC and FMBC. In summer, CMBC was low at Ny-Ålesund but moderate at Barrow, likely reflecting differences in MBC in the lower troposphere. Seasonally averaged BC size distributions in hydrometeors were similar at both sites, suggesting that average BC size distributions are similar in the Arctic lower troposphere. The efficiency of BC removal tends to be size-independent during transport, leading to the observed similarity. © 2021. The Authors.
英文关键词	Arctic; Black carbon; seasonal variation; single-particle soot photometer; size distribution; wet deposition
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185127
作者单位	Department of Physics, Faculty of Science Division I, Tokyo University of Science, Tokyo, Japan; Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Tokyo, Japan; National Institute of Polar Research, Tachikawa, Japan; Institute for Space–Earth Environmental Research, Nagoya University, Nagoya, Japan; Institute for Advanced Research, Nagoya University, Nagoya, Japan; The Graduate University for Advanced Studies, SOKENDAI, Tachikawa, Japan; Department of Earth and Space Sciences, Indian Institute of Space Science and Technology, Thiruvananthapuram, India; Meteorological Research Institute, Tsukuba, Japan; Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan; Research Institute for Sustainable Humanosphere, Kyoto University, Kyoto, Japan; Norwegian Institute for Air Research, Kjeller, Norway
推荐引用方式 GB/T 7714	Mori T.,Kondo Y.,Ohata S.,et al. Seasonal Variation of Wet Deposition of Black Carbon at Ny-Ålesund, Svalbard[J],2021,126(12).
APA	Mori T..,Kondo Y..,Ohata S..,Goto-Azuma K..,Fukuda K..,...&Aas W..(2021).Seasonal Variation of Wet Deposition of Black Carbon at Ny-Ålesund, Svalbard.Journal of Geophysical Research: Atmospheres,126(12).
MLA	Mori T.,et al."Seasonal Variation of Wet Deposition of Black Carbon at Ny-Ålesund, Svalbard".Journal of Geophysical Research: Atmospheres 126.12(2021).