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Ice core records of atmospheric N2O covering the last 106,000 years.
MedLine Citation:
PMID:  12920293     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Paleoatmospheric records of trace-gas concentrations recovered from ice cores provide important sources of information on many biogeochemical cycles involving carbon, nitrogen, and oxygen. Here, we present a 106,000-year record of atmospheric nitrous oxide (N2O) along with corresponding isotopic records spanning the last 30,000 years, which together suggest minimal changes in the ratio of marine to terrestrial N2O production. During the last glacial termination, both marine and oceanic N2O emissions increased by 40 +/- 8%. We speculate that our records do not support those hypotheses that invoke enhanced export production to explain low carbon dioxide values during glacial periods.
Authors:
Todd Sowers; Richard B Alley; Jennifer Jubenville
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  301     ISSN:  1095-9203     ISO Abbreviation:  Science     Publication Date:  2003 Aug 
Date Detail:
Created Date:  2003-08-15     Completed Date:  2003-09-08     Revised Date:  2007-03-19    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  United States    
Other Details:
Languages:  eng     Pagination:  945-8     Citation Subset:  -    
Affiliation:
Department of Geosciences and the EMS Environment Institute, Pennsylvania State University, UniversityPark, PA 16802, USA. sowers@geosc.psu.edu
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