Ice and climate are inextricable linked. The major climate variations of the past "ice ages" are characterized by vast advances of ice over the land and sea. Glaciers and ice sheets affect our current climate. In the future, human modification climate, either purposeful or inadvertent, may cause major changes in the global ice volume and sea level. In addition to its active role in the climate system, ice also contains unique information about past climates. A clear reconstruction of climate history is an essential step toward understanding climate processes and testing theories that can predict future climate changes.
Polar ice sheets and some ice caps contain ice layered in an undisturbed, year-by-year sequence. The isotopic composition of the ice, the enclosed air, and trace constituents including particles and dissolved impurities provide information about the composition, temperature, and circulation of the atmosphere. In turn these may provide information about other conditions that affects the atmosphere. The recent ice layers contain a record of anthropogenic pollutants such as carbon dioxide, other greenhouse gases, and heavy metals. Ice cores retrieved from depths down to 2000 m in the Greenland and Antarctic ice sheets have revealed variations in these climatic indicators over the last 150,000 years.
Recommendations for a U.S. Ice Coring Program endorses these scientific priorities and strongly recommends that the United States:
This report examines the current status of ice core research in the United States and recommends specific steps to implement an ice coring and analysis program.
Table of Contents
|SCIENTIFIC MOTIVATION FOR ICE CORING||9-13|
|STATE OF CURRENT EFFORT||14-20|
|ELEMENTS OF AN ICE CORING PROGRAM IN THE UNITED STATES||21-29|
|RECOMMENDATIONS FOR AN ICE CORING AND ANALYSIS PROGRAM (ICAP)||30-33|
|APPENDIX A: CRREL Activity in Deep Drilling||47-51|
|APPENDIX B: Ice Core Drilling||52-59|
|APPENDIX C: Laboratory Analysis of Ice Cores||60-61|
|APPENDIX D: Status of Ice Core Storage Facility at State University of New York, Buffalo||62-67|
|APPENDIX E: Motivation for CO Research||68-71|
The National Academies Press and the Transportation Research Board have partnered with Copyright Clearance Center to offer a variety of options for reusing our content. You may request permission to:
For most Academic and Educational uses no royalties will be charged although you are required to obtain a license and comply with the license terms and conditions.
For information on how to request permission to translate our work and for any other rights related query please click here.
For questions about using the Copyright.com service, please contact:
Copyright Clearance Center
22 Rosewood Drive
Danvers, MA 01923
Tel (toll free): 855/239-3415 (select option 1)
Loading stats for Recommendations for a U.S. Ice Coring Program...