Document Type
Article
Title
Greenland Ice Core Greenland Ice Core "Signal" Characteristics: An Expanded View of Climate Change
Publication Title
Journal of Geophysical Research
Publisher
American Geophysical Union
Rights and Access Note
This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).
Publication Date
1993
First Page
12,839
Last Page
12,847
Issue Number
D7
Volume Number
98
Abstract/ Summary
The last millenium of Earth history is of particular interest because it documents the environmental complexities of both natural variability and anthropogenic activity. We have analyzed the major ions contained in the Greenland Ice Sheet Project 2 (GISP 2) ice core from the present to ∼674 A.D. to yield an environmental reconstruction for this period that includes a description of nitrogen and sulfur cycling, volcanic emissions, sea salt and terrestrial influences. We have adapted and extended mathematical procedures for extracting sporadic (e.g., volcanic) events, secular trends, and periodicities found in the data sets. Finally, by not assuming that periodic components (signals) were “stationary” and by utilizing evolutionary spectral analysis, we were able to reveal periodic processes in the climate system which change in frequency, “turn on,” and “turn off” with other climate transitions such as that between the little ice age and the medieval warm period.
Repository Citation
Mayewski, Paul Andrew; Meeker, L. D.; Morrison, M. C.; Twickler, M. S.; Whitlow, S. I.; Ferland, K. K.; Meese, D. A.; Legrand, M. R.; and Steffensen, J. P., "Greenland Ice Core Greenland Ice Core "Signal" Characteristics: An Expanded View of Climate Change" (1993). Earth Science Faculty Scholarship. 237.
https://digitalcommons.library.umaine.edu/ers_facpub/237
Citation/Publisher Attribution
Mayewski, P. A., L. D. Meeker, M. C. Morrison, M. S. Twickler, S. I. Whitlow, K. K. Ferland, D. A. Meese, M. R. Legrand, and J. P. Steffensen (1993), Greenland Ice Core “Signal” Characteristics: An Expanded View of Climate Change, Journal of Geophysical Research, 98(D7), 12,839–12,847, doi:10.1029/93JD01085.
Publisher Statement
© Copyright 1993 American Geophysical Union
DOI
10.1029/93JD01085
Version
publisher's version of the published document
Included in
Atmospheric Sciences Commons, Climate Commons, Geochemistry Commons, Glaciology Commons, Hydrology Commons
Rights Statement
