RT info:eu-repo/semantics/article
T1 Study of chemical and optical properties of biomass burning aerosols during long-range transport events toward the arctic in Summer 2017
A1 Zielinski, Tymon
A1 Bolzacchini, Ezio
A1 Cataldi, Marco
A1 Ferrero, Luca
A1 Graßl, Sandra
A1 Hansen, Georg
A1 Mateos Villán, David
A1 Mazzola, Mauro
A1 Neuber, Roland
A1 Pakszys, Paulina
A1 Posyniak, Michal
A1 Ritter, Christoph
A1 Severi, Mirko
A1 Sobolewski, Piotr
A1 Traversi, Rita
A1 Velasco Merino, Cristian
K1 Biomass
K1 Biomasa
K1 Aerosols
K1 Aerosoles
K1 Wildfires
K1 Incendios forestales
AB Biomass burning related aerosol episodes are becoming a serious threat to the radiative balance of the Arctic region. Since early July 2017 intense wildfires were recorded between August and September in Canada and Greenland, covering an area up to 4674 km2 in size. This paper describes the impact of these biomass burning (BB) events measured over Svalbard, using an ensemble of ground-based, columnar, and vertically-resolved techniques. BB influenced the aerosol chemistry via nitrates and oxalates, which exhibited an increase in their concentrations in all of size fractions, indicating the BB origin of particles. The absorption coefficient data (530 nm) at ground reached values up to 0.6 Mm–1, highlighting the impact of these BB events when compared to average Arctic background values, which do not exceed 0.05 Mm–1. The absorption behavior is fundamental as implies a subsequent atmospheric heating. At the same time, the AERONET Aerosol Optical Depth (AOD) data showed high values at stations located close to or in Canada (AOD over 2.0). Similarly, increased values of AODs were then observed in Svalbard, e.g., in Hornsund (daily average AODs exceeded 0.14 and reached hourly values up to 0.5). Elevated values of AODs were then registered in Sodankylä and Andenes (daily average AODs exceeding 0.150) a few days after the Svalbard observation of the event highlighting the BB columnar magnitude, which is crucial for the radiative impact. All the reported data suggest to rank the summer 2017 plume of aerosols as one of the biggest atmosphere related environmental problems over Svalbard region in last 10 years.
PB MDPI
SN 2073-4433
YR 2020
FD 2020
LK https://uvadoc.uva.es/handle/10324/53033
UL https://uvadoc.uva.es/handle/10324/53033
LA eng
NO Atmosphere, 2020, vol. 11, n. 1, 84
NO Producción Científica
DS UVaDOC
RD 23-nov-2024