Transport and Transformation of Atmospheric Aerosol across Central Europe with Emphasis on Anthropogenic Sources (TRACE)

SHUBHI ARORA, Leibniz Institute of Tropospheric Research

     Abstract Number: 270
     Working Group: Source Apportionment

Abstract
The trend in PM10 concentrations in Europe has stagnated over the last two decades, showing only limited annual changes even though there are continued reductions in PM emissions. Possible reasons could be linked to both the aging processes of the particles in the atmosphere and their long-range transport. Therefore, a better understanding of the multiple origins of the atmospheric aerosol requires their sources apportionment at different places for the development of efficient mitigation strategies. The ultimate objective of the current Czech-German bilateral project TRACE is to assess the transport and transformation of atmospheric aerosol across Central Europe with emphasis on anthropogenic sources (including coal and wood combustion) using synergic measurement methods (offline and online) and state-of-the art modelling tools including receptor-oriented models and chemical transport models. Measurements were performed during winter and summer periods in 2021 simultaneously at three sampling places (Melpitz, DE, Kosetice, CZ, and Frydland, CZ) using state-of-the-art online and offline comprehensive chemical characterization of the atmospheric aerosol. Preliminary results from SMPS showed peaks at 35 µg/m³ mass concentration. Moreover, results from Aerosol Mass Spectrometer and receptor modeling via Positive Matrix Factorization (PMF) from the winter campaign 2021 will be presented.