Ice Core Records of Past Climate Changes: Implications for the Future, USGCRP Seminar, 18 September 1995.

Description:

This document provides a brief overview of Dr. Thompson's talk on records of changes in climate in general and the most significant implications of the ice core records of past climate changes in particular. Because climate processes that have operated in the past continue to operate today, ice core records are providing very valuable insights. Within the last two decades, long cores of glacial ice have been used to establish and improve the record of past changes in climate. Analysis of ice cores from Antarctica, Greenland and tropical and subtropical areas have provided a wealth of detailed information on past climate changes. As the ice in these glaciers and ice sheets grew over time, layer by layer, tiny pockets of air were trapped within each layer, preserving a continuous record of the natural changes in the concentrations of greenhouse and other gases. In addition, these ice cores have preserved indirect/proxy records of changes in temperature (which can be closely estimated from the isotopic record of oxygen trapped in the ice), in the concentration of windblown dust, and in volcanic activity. By combining this information, these ice cores have preserved a 200,000-year history of climate changes and factors contributing to these changes.

Creator(s):
Creation Date: September 18, 1995
Partner(s):
UNT Libraries
Collection(s):
Environmental Policy Collection
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Total Uses: 46
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Creator (Author):
Thompson, Lonnie G.

Ohio State University

Creator :
Bender, Michael

University of Rhode Island

Publisher Info:
Place of Publication: Washington, D.C.
Date(s):
  • Creation: September 18, 1995
Description:

This document provides a brief overview of Dr. Thompson's talk on records of changes in climate in general and the most significant implications of the ice core records of past climate changes in particular. Because climate processes that have operated in the past continue to operate today, ice core records are providing very valuable insights. Within the last two decades, long cores of glacial ice have been used to establish and improve the record of past changes in climate. Analysis of ice cores from Antarctica, Greenland and tropical and subtropical areas have provided a wealth of detailed information on past climate changes. As the ice in these glaciers and ice sheets grew over time, layer by layer, tiny pockets of air were trapped within each layer, preserving a continuous record of the natural changes in the concentrations of greenhouse and other gases. In addition, these ice cores have preserved indirect/proxy records of changes in temperature (which can be closely estimated from the isotopic record of oxygen trapped in the ice), in the concentration of windblown dust, and in volcanic activity. By combining this information, these ice cores have preserved a 200,000-year history of climate changes and factors contributing to these changes.

Physical Description:

3 p. : ill.

Language(s):
Subject(s):
Keyword(s): climate variability and change | Paleoenvironment | Paleoclimate
Series Title: USGCRP Seminar
Added Title: U.S. Global Change Research Program Seminar: Of what importance are records of past changes in climate, today and in the future? What are the most significant implications of the ice core records of past climate changes?
Partner:
UNT Libraries
Collection:
Environmental Policy Collection
Identifier:
Resource Type: Text
Format: Text
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Access: Public