Measurements conducted in real built environments are at the core of the GIANT project. They provide information on the influence of outdoor air on indoor air quality, on pollution sources located inside buildings, and on aerosol processes in indoor environments. The most recent measurement campaign was carried out in Tampere. The diverse set of measurements was also covered by Aamulehti.<\/p>\n\n\n\n
The large and multidisciplinary GIANT project (Global trends in IAQ: Novel technologies, Competence and Business; https:\/\/www.giant-iaq.fi\/<\/a>), led by Tampere University, investigates ultrafine particles, black carbon, volatile organic compounds, and secondary aerosols in indoor and outdoor air. In addition to Tampere University, the project consortium includes the Finnish Meteorological Institute, VTT, the University of Helsinki, the University of Eastern Finland, HSY, a large number of companies, the cities of Tampere, Helsinki and Vantaa, as well as Tamlink.<\/p>\n\n\n\n At the heart of the project have been measurement campaigns on indoor and outdoor aerosols, of which many have already been conducted. The measurements have utilized high\u2011performance instruments and sensor-type devices suitable for air quality monitoring. In addition, samples have been collected during the campaigns for later analysis. The diversity of measurement locations has enabled a better understanding of, on one hand, how building-technical factors influence indoor air quality, and on the other hand, new insights regarding the impact of outdoor air. \u201cFor example, the concentration of ultrafine particles in outdoor air strongly depends on nearby sources, particularly traffic. According to our measurements, this is often reflected in indoor air quality as well, depending on the building\u2019s location and the implementation of its ventilation,\u201d says Postdoctoral Researcher Laura Salo from Tampere University.<\/p>\n\n\n\n In the project\u2019s most recent measurement campaign, measurements were carried out in Tampere at a Tredun campus. \u201cIn these measurements, what particularly caught our attention were the indoor black carbon concentrations during the cold spell. Black carbon particles enter the atmosphere not only from traffic but also, for example, when wood is burned. Increased wood heating in the nearby buildings was the likely reason for our observation,\u201d says Doctoral Researcher Ville Silvonen from Tampere University.<\/p>\n\n\n\n Aamulehti<\/em>\u2019s news article on the measurement campaign (in Finnish): https:\/\/www.aamulehti.fi\/tiedejateknologia\/art-2000011815706.html<\/a><\/p>\n\n\n\n