SAMIRA-SAtellite Based Monitoring Initiative for Regional Air Quality

The satellite based monitoring initiative for regional air quality (SAMIRA) was set up to demonstrate the exploitation of existing data and urban scale quality. project carried out between May 2016 December 2019 focused on aerosol optical depth (AOD), particulate matter (PM), nitrogen dioxide (NO2), sulfur (SO2). SAMIRA built around several research tasks: 1. spinning enhanced visible infrared imager (SEVIRI) AOD optimal estimation algorithm improved geographically extended from Poland Romania, Czech Republic Southern Norway. A near real-time retrieval implemented is currently operational. Correlation coefficients 0.61 0.62 were found SEVIRI ground-based sun-photometer Romania Poland, respectively. 2. ground-level concentrations PM2.5 using in combination with WRF-Chem output. For representative sites a correlation 0.56 0.49 satellite-based situ Republic, 3. An operational fusion make use various products (NO2, SO2, AOD, PM10). inclusion mapping NO2 rural areas an annual basis background areas. It slightly SO2. satellites or results PM10. 4. geostatistical downscaling developed bridge gap towards urban-scale applications. Initial testing synthetic followed by applying OMI direct comparison against high-resolution TROPOMI as reference, thus allowing quantitative assessment performance demonstrating significant accuracy improvements after downscaling. We can conclude that demonstrated added value regional- monitoring.