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A 400 years isotope record of the Antarctic Peninsula climate
Author(s) -
Aristarain Alberto J.,
Jouzel Jean,
Lorius Claude
Publication year - 1990
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl017i013p02369
Subject(s) - ice core , peninsula , geology , climatology , proxy (statistics) , southern hemisphere , temperature record , latitude , circumpolar star , northern hemisphere , period (music) , marine isotope stage , climate change , oceanography , physical geography , quaternary , interglacial , geography , paleontology , physics , archaeology , geodesy , machine learning , computer science , acoustics
A 400 year deuterium record has been obtained from a 154.3 m ice core drilled on Dalinger Dome (James Ross Island, Antarctic Peninsula). Based on a comparison between the isotope profile and the temperature data over the recent period (Aristarain et al, 1986), an interpretation is proposed in terms of temperature changes. The “warmest part” of this proxy record occurs around 1850 with, as a salient feature, a temperature decline of ∼ 2°C from that time up until present conditions. This feature, at odds with the long timescale warming trend recorded for both hemispheres over the same period, likely reflects a regional characteristic related to the lack of a high latitude/low latitude link in Southern hemisphere circulation patterns.