A 3.6 Ma sedimentological, geochemical and palynological record of sediment core ICDP5011-1 in Lake Elgygytgyn, NE Russia, supplement to: Brigham-Grette, Julie; Melles, Martin; Minyuk, Pavel S; Andreev, Andrei A; Tarasov, Pavel E; DeConto, Robert M; König, Sebastian; Nowaczyk, Norbert R; Wennrich, Volker; Rosén, Peter; Haltia-Hovi, Eeva; Cook, Timothy L; Gebhardt, Catalina; Meyer-Jacob, Carsten; Snyder, Jeffrey A; Herzschuh, Ulrike (2013): Pliocene warmth, polar amplification, and stepped pleistocene cooling recorded in NE Arctic Russia. Science, 340(6139), 1421-1427

Understanding the evolution of Arctic polar climate from the protracted warmth of the middle Pliocene into the earliest glacial cycles in the Northern Hemisphere has been hindered by the lack of continuous, highly resolved Arctic time series. Evidence from Lake El'gygytgyn, NE Arctic Russia, sh...

Full description

Bibliographic Details
Main Authors: Brigham-Grette, Julie, Melles, Martin, Minyuk, Pavel S, Andreev, Andrei A, Tarasov, Pavel E, DeConto, Robert M, König, Sebastian, Nowaczyk, Norbert R, Wennrich, Volker, Rosén, Peter, Haltia-Hovi, Eeva, Cook, Timothy L, Gebhardt, Catalina, Meyer-Jacob, Carsten, Snyder, Jeffrey A, Herzschuh, Ulrike
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2013
Subjects:
Composite Core
ICDP_Elgygytgyn-Drilling-Project
Sampling on land
Lake Elgygytgyn - Climate History of the Arctic since 3.6 Million Years ELGYGYTGYN
Arctic
Brigham
Snyder
Catalina
Hovi
Online Access:https://dx.doi.org/10.1594/pangaea.808834
https://doi.pangaea.de/10.1594/PANGAEA.808834
Description
Summary:Understanding the evolution of Arctic polar climate from the protracted warmth of the middle Pliocene into the earliest glacial cycles in the Northern Hemisphere has been hindered by the lack of continuous, highly resolved Arctic time series. Evidence from Lake El'gygytgyn, NE Arctic Russia, shows that 3.6-3.4 million years ago, summer temperatures were ~8°C warmer than today when pCO2 was ~400 ppm. Multiproxy evidence suggests extreme warmth and polar amplification during the middle Pliocene, sudden stepped cooling events during the Pliocene-Pleistocene transition, and warmer than present Arctic summers until ~2.2 Ma, after the onset of Northern Hemispheric glaciation. Our data are consistent with sea-level records and other proxies indicating that Arctic cooling was insufficient to support large-scale ice sheets until the early Pleistocene.

Similar Items