“…Multiple lines of evidence support the notion that a wet Arctic became wetter during the PETM (Carmichael et al, 2017). Abundant Paleocene coal deposits in Northern Canada, Alaska, and Spitsbergen provide evidence for a wet climate in the Arctic (Kalkreuth, 2004;Lüthje, 2008;McIver & Basinger, 1999;Mull et al, 2003). Warmer air masses in the early Eocene can hold more water vapor and their movement would have carried more moisture poleward (Fricke, 2003;Fricke et al, 1998), resulting in more precipitation locally (Sloan et al, 1995).…”