Published April 24, 1990
| public
Journal Article
Environmental Information in the Isotopic Record in Trees [and Discussion]
Abstract
Twenty-three trees from widely different geographic locations and different environments were analysed for the δD and δ^(13)C records. The δD values suggested that the temperature of the Earth's surface rose over the past 100 years and probably for the past 1000 years. The rate of warming appears to be latitude dependent, greatest in the cooler areas. The δ^(13)C record, obtained for seven of the 23 trees, contain the δ^(13)C decrease due to the anthropogenic effect, the addition of CO_2 from coal and petroleum burning. This effect appears to be twice as high in the Northern Hemisphere as in the Southern Hemisphere.
Additional Information
© 1990 Royal Society of London. Published 24 April 1990. We thank the late C. J. Ferguson for the dated bristlecone pine sample. We are grateful to the many colleagues (too numerous to list) who have contributed samples from different parts of the world. We acknowledge the help of C. Kendall, L. J. Randolph, E. Dent, S. Newman and J. Ruth for their technical assistance. We have benefited greatly from discussions with Professor M. J. DeNiro and Professor C. J. Yapp. Professor Yapp's contribution to this paper was particularly important in our discussions of his data. We are grateful for financial support from the NSF Grant No. EAR-8504096 and NSF Grant ATM80-8830. This is Contribution No. 4742 from the California Institute of Technology, Division of Geological and Planetary Sciences.Additional details
- Eprint ID
- 42150
- Resolver ID
- CaltechAUTHORS:20131031-092125486
- EAR-8504096
- NSF
- ATM80-8830
- NSF
- Created
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2013-10-31Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 4742