Masters' Thesis Silas Lehmann smoke plume events age and origin identification

The following images are part of the Master's Thesis by Silas Lehmann performed at PSI as part of the ETH Zürich IAC Master's program in environmental science. The thesis is titled "Comparing smoke particle size distributions within long-range transported wildfire plumes measured in Switzerland" The following tools were used to asses plume age and origin: AGESPECTRUM is a product based on FLEXPART trajectories by NILU (Norwegian Institute for Air Research) that models the transport of black carbon. More specifically AGESPECTRUM for black carbon from biomass burning only is used, which attempts to reduce other black carbon sources and yields an age distribution of modeled black carbon concentrations from biomass burning in a 3 hourly resolution between sets of trajectories arriving at the JFJ. AGESPECTRUM displays the contribution of up to 30 days old black carbon with an age distribution resolution of 1 day. The FLEXTRA - Air mass trajectories from NILU, that each span 7 days and contain three different trajectories for varying heights of arrival as an estimate of the uncertainty and have a temporal resolution of 3 hours. The NASA-tool "Fire Information for Resource Management System" (FIRMS) is a satellite based tool, that marks fires at a spacial resolution of 1 km, when using the MODIS (Terra and Aqua) satellites at a temporal resolution of 1 day. The footprint tool for black carbon by NILU also based on FLEXPART trajectories consists of a footprint emissions sensitivity map, that illustrates the likelihood of any black carbon emission occurring anywhere around the world to reach the JFJ for 30 days of particle tracking. The images in this repository are the times used to identify the event age and origin. Before this the plume peak hour has been identified, which is an hour that represents the event overall, but also features a large accumulation mode. The tools used are self-created figures from the NILU AGESPECTRUM data, figures from the FLEXTRA - Air mass trajectories from NILU, the selected day from NASA-tool FIRMS based on the data from AGESPECTRUM and the footprint tool by NILU. The Footprint data for events 14-16 is missing and the Nilu agespec is missing for event 16 (2025 data was not yet available at the time the analysis was performed). Acknowledgements: I acknowledge the use of imagery from the NASA FIRMS application \\(https://firms.modaps.eosdis.nasa.gov/) operated by the NASA/Goddard Space Flight Center Earth Science Data and Information System (ESDIS) project. I acknowledge NILU for providing the FLEXTRA trajectories (www.nilu.no/trajectories) used in this study. I acknowledge the use of FLEXPART model simulations for footprint data of black carbon. FLEXPART model simulations are cross-atmospheric research infrastructure services provided by ATMO-ACCESS (EU grant agreement No 101008004). The computations/simulations/[SIMILAR] were performed on resources provided by Sigma2 - the National Infrastructure for High Performance Computing and Data Storage in Norway. I acknowledge Nikolaos Evangeliou and Sabine Eckhardt at NILU for providing wildfire specific AGESPECTRUM data.