Thermal-optical analysis of quartz fiber filters loaded with snow samples – determination of iron based on interferences caused by mineral dust

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SUMMARY

    Black carbon (BC) and mineral dust (MD) have been identified and evaluated as prominent light-absorbing snow impurities (LASI) (Doherty et_al, 2018; Kaspari et_al, 2014; Svensson et_al, 2018; Tuzet et_al, 2017; Warren and Wiscombe, 1980). Deposition of these compounds leads to a reduction in the surface albedo, influencing thawing and geochemical processes, accelerating snow and ice melt, and triggering albedo feedback (Ramanathan and Carmichael, 2008; Tuzet et_al, 2020). Thermal-optical analysis (Birch and Cary, 1996; Chow et_al, 1993), optical methods determining the spectral absorption of total particulate matter sampled on a filter (Grenfell et_al . . .

     

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