Articles | Volume 7, issue 4 
            
                
                    
            
            
            https://doi.org/10.5194/gc-7-297-2024
                    © Author(s) 2024. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gc-7-297-2024
                    © Author(s) 2024. This work is distributed under 
the Creative Commons Attribution 4.0 License.
                the Creative Commons Attribution 4.0 License.
The Gannon Storm: citizen science observations during the geomagnetic superstorm of 10 May 2024
                                            Department of Physics, University of Helsinki, Helsinki, Finland
                                        
                                    
                                            Finnish Meteorological Institute, Helsinki, Finland
                                        
                                    Emma Bruus
                                            Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland
                                        
                                    
                                            Taivaanvahti/Skywarden Observation Service, Ursa Astronomical Association, Helsinki, Finland
                                        
                                    Vincent E. Ledvina
                                            Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
                                        
                                    
                                            Aurorasaurus, New Mexico Consortium, Los Alamos, NM, USA
                                        
                                    Noora Partamies
                                            Department of Arctic Geophysics, University Centre in Svalbard, Longyearbyen, Norway
                                        
                                    Mathieu Barthelemy
                                            IPAG, Université Grenoble Alpes, CNRS,  Grenoble, France
                                        
                                    
                                            CSUG, Université Grenoble Alpes, Grenoble, France
                                        
                                    Carlos Martinis
                                            Physics and Astronomy, Center for Space Physics, Astronomy Department, Boston University, Boston, MA, USA
                                        
                                    Rowan Dayton-Oxland
                                            University of Southampton, Southampton, United Kingdom
                                        
                                    Bea Gallardo-Lacourt
                                            Goddard Space Flight Center, National Aeronautics and Space Administration, Greenbelt, MD, USA
                                        
                                    
                                            Department of Physics, The Catholic University of America, Washington, DC, USA
                                        
                                    Yukitoshi Nishimura
                                            Department of Electrical and Computer Engineering and Center for Space Physics, Boston University, Boston, MA, USA
                                        
                                    Katie Herlingshaw
                                            Department of Arctic Geophysics, University Centre in Svalbard, Longyearbyen, Norway
                                        
                                    Neethal Thomas
                                            Sodankylä Geophysical Observatory, University of Oulu, Sodankylä, Finland
                                        
                                    Eero Karvinen
                                            Taivaanvahti/Skywarden Observation Service, Ursa Astronomical Association, Helsinki, Finland
                                        
                                    Donna Lach
                                            Aurorasaurus, New Mexico Consortium, Los Alamos, NM, USA
                                        
                                    
                                            citizen scientist, Canada
                                        
                                    Marjan Spijkers
                                            citizen scientist, the Netherlands
                                        
                                    Calle Bergstrand
                                            citizen scientist, Sweden
                                        
                                    Data sets
Citizen Science Reports on Aurora Sighting and Technological Disruptions during the 10 May 2024 Geomagnetic Storm – ARCTICS Survey M. Grand and ARCTICS collaboration https://doi.org/10.5281/zenodo.12732615
Executive editor
                This work highlights the importance of data collected through citizen science for studying extreme geomagnetic storms. The Gannon storm was an unprecedented opportunity to test the limitations of citizen science data collection and to offer solutions to enable similar studies in the future. This study has great potential to be of interest to the wider public.
                    This work highlights the importance of data collected through citizen science for studying...
                    
            Short summary
                    We carried out a citizen science study of aurora sightings and technological disruptions experienced during the extreme geomagnetic storm of 10 May 2024. We collected reports from 696 observers from over 30 countries via an online survey, supplemented with observations logged in the Skywarden database. We found that the aurora was seen from exceptionally low latitudes and had very bright red and pink hues, suggesting that high fluxes of low-energy electrons from space entered the atmosphere.
                    We carried out a citizen science study of aurora sightings and technological disruptions...
                    
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