Characterizing the Statistical Properties and Global Distribution of Dansgaard-Oeschger Events

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 stat...

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Bibliographic Details
Main Author: Thomas, Andrea Michelle
Format: Text
Language:unknown
Published: BYU ScholarsArchive 2009
Subjects:
Dansgaard-Oeschger events
D-O events
cyclicity
climate variability
bootstrap
permutation testing
correlation
Statistics and Probability
Greenland
Antarc*
Antarctica
ice core
Online Access:https://scholarsarchive.byu.edu/etd/2024
https://scholarsarchive.byu.edu/context/etd/article/3023/viewcontent/ETD_CISOPTR_2050.pdf
Description
Summary: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.

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