Dye 3 trapped gas isotopic analyses covering abrupt warming episodes during last glacial period

Gas analyses were measured to reconstruct the 15Nitrogen/14Nitrogen (d15N) anomaly associated with the abrupt warming episodes better known as the Dansgaard-Oeschger (DO) events. In addition to the d15N analyses, we measured the elemental composition of Oxygen, Nitrogen and Argon in order to assess...

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Bibliographic Details
Main Author: Sowers, Todd
Format: Dataset
Language:English
Published: NSF Arctic Data Center 2022
Subjects:
temperature
Greenland
Antarc*
Antarctica
Dye 3
Dye-3
ice core
Online Access:https://dx.doi.org/10.18739/a21n7xn9q
https://arcticdata.io/catalog/view/doi:10.18739/A21N7XN9Q
Description
Summary:Gas analyses were measured to reconstruct the 15Nitrogen/14Nitrogen (d15N) anomaly associated with the abrupt warming episodes better known as the Dansgaard-Oeschger (DO) events. In addition to the d15N analyses, we measured the elemental composition of Oxygen, Nitrogen and Argon in order to assess the magnitude of gas loss from the core which was drilled in 1981. The Dye 3 d15N data exhibit larger excursions than d15N data from any other ice core (Greenland or Antarctica). Taken at face value, larger d15N excursions imply larger abrupt temperature increases during the warming phases of the DO events.

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