Variability of Black Carbon Mass Concentrations, Sub-micrometer Particle Number Concentrations and Size Distributions: Results of the German Ultrafine Aerosol Network Ranging from City Street to High Alpine Locations

Publication date: Available online 26 December 2018

Source: Atmospheric Environment

Author(s): J. Sun, W. Birmili, M. Hermann, T. Tuch, K. Weinhold, G. Spindler, A. Schladitz, S. Bastian, G. Löschau, J. Cyrys, J. Gu, H. Flentje, B. Briel, C. Asbach, H. Kaminski, L. Ries, R. Sohmer, H. Gerwig, K. Wirtz, F. Meinhardt

Abstract

This work reports the first statistical analysis of multi-annual data on tropospheric aerosols from the German Ultrafine Aerosol Network (GUAN). Compared to other networks worldwide, GUAN with 17 measurement locations has the most sites equipped with particle number size distribution (PNSD) and equivalent black carbon (eBC) instruments and with most site categories in Germany, includes locations ranging from city street/roadside to high Alpine. As we know, the variations of eBC and particle number concentration (PNC) are influenced by several factors such as source, transformation, transport and deposition. For the different pollutant parameters, their dominant controlling factor might be varied, leading to the different spatio-temporal variations among measured parameters. Currently, the study of spatio-temporal variation of PNSD and eBC considering the influence of both site categories and spatial scale is still largely missing. Since GUAN is a multi-site dataset with various site categories and large spatial scale, the goal of this study is to investigate that, how pollutant parameters interfere with spatial characteristics and site categories.

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