Plunkett Gill, Sigl Michael, Pilcher Jonathan R., McConnell Joseph R., Chellman Nathan, Steffensen J.P., and Büntgen Ulf. 2020. “Smoking Guns and Volcanic Ash: The Importance of Sparse Tephras in Greenland Ice Cores”. Polar Research 39 (June). https://doi.org/10.33265/polar.v39.3511.