The Polar Expression of ENSO and Sea-Ice Variability as Recorded in a South Pole Ice Core

An annually dated ice core recovered from South Pole (2850 in a.s.l.) in 1995, that covers the period 1487-1992, was analyzed for the marine biogenic sulfur species methanesulfonate (MS). Empirical orthogonal function analysis is used to calibrate the high-resolution MS series with associated enviro...

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Bibliographic Details
Published in:Annals of Glaciology
Main Authors: Myerson, Eric A., Mayewski, Paul Andrew, Kreutz, Karl J., Meeker, L. David, Whitlow, Sallie I., Twickler, Mark S.
Format: Text
Language:unknown
Published: DigitalCommons@UMaine 2002
Subjects:
Earth Sciences
ice core
Sea ice
South pole
Online Access:https://digitalcommons.library.umaine.edu/ers_facpub/147
https://doi.org/10.3189/172756402781817149
https://digitalcommons.library.umaine.edu/context/ers_facpub/article/1146/viewcontent/kreutz_35_430_436.pdf
Description
Summary:An annually dated ice core recovered from South Pole (2850 in a.s.l.) in 1995, that covers the period 1487-1992, was analyzed for the marine biogenic sulfur species methanesulfonate (MS). Empirical orthogonal function analysis is used to calibrate the high-resolution MS series with associated environmental series for the period of overlap (1973-92). Utilizing this calibration we present a similar to500 year long proxy record of the polar expression of the El Nino-Southern Oscillation (ENSO) and southeastern Pacific sea-ice extent variations. These records reveal short-term periods of increased (1800-50, 1900-40) and decreased sea-ice extent (1550-1610., 1660-1710, 1760-1800). In general, increased (decreased) sea-ice extent is associated with a higher (lower) frequency of El Nino events.

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