Scientific journal publication Ash and sulfur dioxide in the 2008 eruptions of Okmok and Kasatochi: Insights from high spectral resolution satellite measurements. Prata, A.J.; Gangale, G.; Clarisse, L.; Karagulian, F. Publication details Journal: J. Geophys. Res., 115, D00L18, 2010 DOI: 10.1029/2009JD013556