Black carbon pollution in snow and its impact on albedo near the Chilean stations on the Antarctic peninsula: First results

The Science of the Total Environment
Francisco Cereceda-BalicHumberto E González

Abstract

BC can be transported through the atmosphere from low and mid-latitudes to Antarctica, or it can be emitted in the Antarctica in situ. To establish a possible relationship between BC and the human activities in Antarctica, shallow snow samples were taken in four sites from Antarctic peninsula during summer periods (2014-2019): Chilean Base O'Higgins (BO), La Paloma Glacier (LP) (6 km away from BO); Chilean Base Yelcho (BY) and P4 (5 km away from BY). BC concentration in snow samples was determined by using a novel methodology recently developed, published and patented by the authors. The methodology consisted in a filter-based optical transmission method at a wavelength of 880 nm. Results showed that snow from BO presented the highest BC concentration (3395.7 μg kg-1), followed by BY (1309.2 μg kg-1), LP 2016 (745.9 μg kg-1), LP 2015 (233.6 μg kg-1) and finally P4 (179.4 μg kg-1). BC values observed in Antarctic snow were higher than others previously reported in the literature and showed the influence of anthropic activities in the study area, considering that the two highest values of BC concentration in snow were found at sites near the bases. To evaluate the impact of the BC concentrations found in the snow of the study are...Continue Reading

References

Apr 27, 2001·Journal of the Air & Waste Management Association·A D HansenJ G Watson
Sep 3, 2019·The Science of the Total Environment·Francisco Cereceda-BalicHans Moosmüller

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