<div dir="ltr"><div class="gmail_quote gmail_quote_container"><div dir="ltr"><div><div><div class="gmail_quote"><div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Hi all, </div><div dir="ltr"><div dir="auto"><div dir="auto"><div dir="auto"><br></div><div dir="auto">We have a guest in the School of Oceanography this week - Jordan Landers, a graduate student of Julian Emile-Geay at the University of Southern California. We are planning to host her for a one-off paleoclimate seminar at <b>12:30 PM on Tuesday the 28th in MSB 123</b>. Please join us if you have interest in creative quantitative approaches to complicated problems in time series analysis! :) </div><div dir="auto"><br></div><div>Best,</div><div>Mo</div><div dir="auto"><br></div><div dir="auto"><b>Nothing like the sun?: A causal examination of the solar influence on Holocene climate</b><br><br>Variations in Total Solar Irradiance (TSI) have long been hypothesized<br>to influence global mean surface temperature (GMST) on centennial to<br>millennial timescales, but empirical evidence for this relationship<br>has remained elusive. Focusing on the pre-industrial Holocene, when<br>anthropogenic influences were minimal, we apply Convergent Cross<br>Mapping (CCM), a causal-inference method, to explore the link between<br>solar variability and climate. We analyze a number of combinations,<br>pairing temperature targets (a global mean surface reconstruction and<br>various Greenland ice core records) with two TSI reconstructions,<br>across a broad range of timescale configurations. We detect a weak but<br>consistently significant solar influence at the global scale, but a<br>more nuanced pattern of influence among the high-latitude records.<br>This contrast suggests that solar forcing was not the dominant driver<br>of Holocene climate fluctuations at the global scale, but its<br>influence is still detectable and may provide a useful benchmark for<br>evaluating whether models correctly capture the nonlinear dynamics of<br>Earth's climate. </div><div dir="auto"><br></div></div></div>
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