Fig. 2
From: Health impacts of PM2.5 originating from residential wood combustion in four nordic cities
Annual average concentration of PM2.5 due to emissions from RWC in Umeå, Helsinki, Oslo, and Copenhagen. The spatial resolution is 250 m × 250 m for Umeå and Helsinki, and 1 km × 1 km for Oslo and Copenhagen. The results represent Umeå (2011), Helsinki and Oslo (2013), and Copenhagen (2014). The physical sizes of the domains are different for each panel. Maps created with QGIS 3.14.1-Pi, https://qgis.org/en/site