Ice core records from Greenland have shown times of rapid warming during the most recent glacial period, called Dansgaard-Oeschger (D-O) events. D-O events are important to our understanding of both past climate systems and modern climate volatility. In this paper, we present new approaches for statistically evaluating the existence of cyclicity in D-O events and the possible lagged correlation between the Greenland and Antarctica temperature records. Specifically, we consider permutation testing and bootstrapping methodologies for assessing the cyclicity of D-O events and the correlation between the Greenland and Antarctica records. We find that there is not enough evidence to conclude that D-O events are cyclical; however, the Antarctica record leads the Greenland record by 545 years with a statistically significant correlation of 0.455.
College and Department
Physical and Mathematical Sciences; Statistics
BYU ScholarsArchive Citation
Thomas, Andrea Michelle, "Characterizing the Statistical Properties and Global Distribution of Dansgaard-Oeschger Events" (2009). Theses and Dissertations. 2024.
Dansgaard-Oeschger events, D-O events, cyclicity, climate variability, bootstrap, permutation testing, correlation