In this NSF funded project we address one of the grand challenges in paleoclimate science – Abrupt Climate Change (ACC) and one of the grand challenges to future sustainability – predicting the path of future climate change. Ice core records provided the foundation for the realization that climate can change abruptly to a new state in just a few years. Therefore, in this proposal we suggest that by using even more in-depth investigation into ice cores, made available by transformative laser based ice core analysis, we will be able to probe into resolution levels far beyond those currently utilized and as a consequence we can search for precursors for abrupt change not previously recognizable. Our proposal addresses a critical Arctic, Antarctic and globally significant process (ACC) and our primary hypothesis (a search for ACC precursors) focuses directly on new understanding and the development of predictive tools. In addition, our proposal will significantly enhance interpretation of past climate in the Arctic, Antarctic and adjacent regions providing new ultra high resolution ice core records.
P. A. Mayewski, S. B. Sneed, S. D. Birkel, A. , and K. A. Maasch. Holocene warming marked by abrupt onset of longer summers and reduced storm frequency around Greenland. Journal of Quaternary Science, in press, 2014.
S. B. Sneed, P. A. Mayewski, W. Sayre, M. Handley, A. V. Kurbatov, K. C. Taylor, P. Bohleber, and D. Wagenbach. Validation of micrometer resolution chemical analysis of ice cores by LA-ICP-MS. Journal of Glaciology, in review, 2014.