Day–Night Monitoring of Volcanic SO₂ and Ash Clouds for Aviation Avoidance at Northern Polar Latitudes oleh Nickolay Krotkov, Vincent Realmuto, Can Li, Colin Seftor, Jason Li, Kelvin Brentzel, Martin Stuefer, Jay Cable, Carl Dierking, Jennifer Delamere, David Schneider, Johanna Tamminen, Seppo Hassinen, Timo Ryyppö, John Murray, Simon Carn, Jeffrey Osiensky, Nate Eckstein, Garrett Layne, Jeremy Kirkendall