M. D. Zettergren

Dr. Zettergren has participated in the development a number of physics-based ionospheric mod- els that have been used to study a wide range of atmosphere-ionosphere and magnetosphere- ionosphere coupling processes including natural hazard and weather effects on the ionosphere, the generation of auroral density structures (Zettergren and Semeter, 2012) and related instabilities (Zettergren et al, 2015b), and ionospheric outflow (Lynch et al, 2007 Zettergren et al, 2008 Burleigh and Zettergren, 2017). Under NASA Earth Surface and Interior support, Dr. Zettergren has participated in development of a coupled ionosphere-atmosphere model aimed at simulating the response to natural hazard events. To date, this model has been applied to study weather and natural hazard related infrasound (Zettergren and Snively, 2013 Zettergren and Snively, 2015 Snively et al, in preparation), and has been used to demonstrate existence and detailed characteristics of nonlinear acoustic waves generated by the 2011 Tohoku earthquake (Zettergren, et al 2017). Dr. Zettergren has served as a reviewer of NSF and NASA proposals, as well as, for Journal of Geophysical Research, Geophysical Research Letters, Radio Science, Annales Geophysicae, Earth, Planets, and Space, Journal of Atmospheric and Solar-Terrestrial Physics.