Black Carbon Seasonal and Diurnal Variation in surfacesnow in Svalbard and itsConnections to Atmospheric Variables

doi:10.5194/acp-2020-574

GSTDTAP > 地球科学

DOI	10.5194/acp-2020-574
	Black Carbon Seasonal and Diurnal Variation in surfacesnow in Svalbard and itsConnections to Atmospheric Variables
	Michele Bertò, David Cappelletti, Elena Barbaro, Cristiano Varin, Jean-Charles Gallet, Krzysztof Markowicz, Anna Rozwadowska, Mauro Mazzola, Stefano Crocchianti, Luisa Poto, Paolo Laj, Carlo Barbante, and Andrea Spolaor
	2020-07-08
发表期刊	Atmospheric Chemistry and Physics
出版年	2020
英文摘要	Black Carbon (BC) is a major forcing agent in the Arctic but substantial uncertainty remains to quantify its climate effects due to the complexity of mechanisms involved. In this study, we provide unique information on processes driving the variability of BC mass concentration in surface snow in the Arctic. Two different snow-sampling strategies were adopted during spring 2014 and 2015, focusing on the refractory BC (rBC) mass Ny-Ålesund concentration daily/hourly variability on a seasonal/daily time scale (referred to as 80-days and 3-days experiments). Despite the low rBC mass concentrations (never exceeding 22 ng g⁻¹), a daily variability of up to 4.5 ng g⁻¹ was observed. Atmospheric, meteorological and snow-related physico-chemical parameters were considered in multiple statistical models to understand the factors behind the observed variation of rBC mass concentrations. Results indicate that the main drivers of the variation of rBC are the precipitations events, snow metamorphism (melting-refreezing cycles, surface hoar formation and sublimation) and the activation of local sources (wind resuspension) during the snow melting periods. The rBC in the snow seems de-coupled with the atmospheric BC load. Our results highlighted a common association of snow rBC with coarse mode particles number concentration and with snow precipitation events.
领域	地球科学
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/283260
专题	地球科学
推荐引用方式 GB/T 7714	Michele Bertò, David Cappelletti, Elena Barbaro, Cristiano Varin, Jean-Charles Gallet, Krzysztof Markowicz, Anna Rozwadowska, Mauro Mazzola, Stefano Crocchianti, Luisa Poto, Paolo Laj, Carlo Barbante, and Andrea Spolaor. Black Carbon Seasonal and Diurnal Variation in surfacesnow in Svalbard and itsConnections to Atmospheric Variables[J]. Atmospheric Chemistry and Physics,2020.
APA	Michele Bertò, David Cappelletti, Elena Barbaro, Cristiano Varin, Jean-Charles Gallet, Krzysztof Markowicz, Anna Rozwadowska, Mauro Mazzola, Stefano Crocchianti, Luisa Poto, Paolo Laj, Carlo Barbante, and Andrea Spolaor.(2020).Black Carbon Seasonal and Diurnal Variation in surfacesnow in Svalbard and itsConnections to Atmospheric Variables.Atmospheric Chemistry and Physics.
MLA	Michele Bertò, David Cappelletti, Elena Barbaro, Cristiano Varin, Jean-Charles Gallet, Krzysztof Markowicz, Anna Rozwadowska, Mauro Mazzola, Stefano Crocchianti, Luisa Poto, Paolo Laj, Carlo Barbante, and Andrea Spolaor."Black Carbon Seasonal and Diurnal Variation in surfacesnow in Svalbard and itsConnections to Atmospheric Variables".Atmospheric Chemistry and Physics (2020).