Bio
He is physicist and retired from the Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research - Atmospheric Environmental Research in Garmisch-Partenkirchen, Germany in 02/2016 (Regelaltersrentner). Since then, he is self-employed (freischaffend) as Atmospheric Physics Consultant. He is working since 50 years in atmospheric research and his current research interests are: (1) Atmospheric environment, (3) Air quality studies by remote sensing (FTIR, DOAS, LIDAR, SODAR), unmanned aerial vehicles, in situ measurements (also middle- and low-cost sensors) as well as emission determination: gases, particulates, (3) Meteorological influences upon air pollution (gases, particulates). He is teaching atmospheric physics for the atmospheric environmental research at the School of Atmospheric Sciences of the Chengdu University of Information Technology, Chengdu, China since 2016. He was supervisor of 17 doctorial and 20 master's or diploma students as well as coordinated about 60 research projects of national and international funding organizations and companies.

Talk
I plan to report on instrument differences (SDS011, Alphasense N2/3, Grimm EDM80OPC, EDM164), practical (recalibration) difficulties (humidity, density, ventilation) and spatial correlation between the sensors time series at different temporal aggregation levels. Please let me know if we could further coordinate between the three contributions.

Bio
He is Physical geographer with focus on climatology, working on large scale climate teleconnections and historical climatology first. A further main topic is synoptic climatology and weather type classifications, linking large scale circulation to local climate variability, like machine learning based downscaling. Latest projects address urban boundary layer dynamics and air quality questions using low-cost sensor networks, mobile measurements and unmanned aerial systems. Recent studies include work based on the urban climate model PALM-4U.

Talk
The idea is to compile the latest information about the use of air quality sensors and give an overview about the topics that are more controversial or more challenging in the field. I will base the presentation in the notes I wrote during the Air Sensor International Conference that took placed in May in Pasadena (USA), also the coming Air Quality Conference happening in Thessaloniki in 3 weeks and my own experience.

Bio
Miriam Chacón Mateos is a research scientist and a PhD student at the Department of Flue Gas Cleaning and Air Quality Control at the University of Stuttgart in Germany. Her research focuses on the investigation of air quality low-cost sensors for their application in epidemiological studies. She conducted a feasibility study together with the University Hospital Charité in Berlin with patients with COPD (chronic obstructive pulmonary disease) and Asthma. Currently she is working on a project funded by the German Environment Agency to determine and communicate the current possibilities and limits of air quality sensors. She holds a B.Eng. in Chemical Engineering from the Universidad Complutense de Madrid, Spain, and a M.Sc. in Air Quality Control, Solid Waste and Waste Water Process Engineering from University of Stuttgart, Germany.

Bio
Dimosthenis Sarigiannis is Professor of Environmental Engineering and Director of the Environmental Engineering Laboratory and the General Chemical Technology Laboratory of the Department of Chemical Engineering and of the Research Group on the Exposome and Health at the Center for Interdisciplinary Research and Innovation of Aristotle University of Thessaloniki in Greece. He is also Associate Professor of Environmental Health Engineering at the Institute for Advanced Study (IUSS) in Pavia, Italy, Director of the Research Center on Complex Risk and Data Analysis and member of the coordination team of the nation-wide PhD program on Sustainable Development and Climate at the Institute for Advanced Study (IUSS) of Pavia in Italy and visiting Professor at the University of Paris. He is President of the Mediterranean Scientific Association for Environmental Protection, Vice-President of the Hellenic Society of Toxicology, member of the Expert Committee on Air Pollution of the Greek Ministry of Health and advisor to the WHO European Centre for Environment and Health. In 2015 he received the Bo Holmstedt award from EUROTOX and the Bo Holmstedt Foundation for his contributions to the safety of pharmaceuticals and chemicals. He is the author or co-author of over 150 scientific papers published in the peer-reviewed literature and 26 chapters in international books and monographs and has led or contributed to 40 international research projects in the above areas. His research focuses (a) on the unraveling of the human exposome to improve the health risk assessment of industrial and environmental toxicants and to evaluate the effects of climate change and of climate change adaptation and mitigation policies and (b) on internalizing health aspects into circular economy strategies towards the implementation of safe-and-sustainable-by-design approaches to chemicals, materials and products.