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Increase in the atmospheric nitrous oxide concentration during the last 250 years
Abstract
In order to estimate the concentrations of atmospheric nitrous oxide (N 2 O) during the last 250 years, air samples were extracted from an Antarctic ice core, H15, using a dry extraction system and were then analyzed with a precision of ±2 ppbv. The results obtained were clearly less scattered and much tighter than those of the previous studies. Our data showed that the concentrations of atmospheric N 2 O in the 18th century were about 276 ppbv on average. It was also obvious that the N 2 O concentration began to increase in the mid‐19th century and reached approximately 293 ppbv around 1965, the trend of the concentration increase correlating quite well with the direct atmospheric measurements at the South Pole. Such an increase in the atmospheric N 2 O concentration is thought to be of anthropogenic origin.
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Cited by
The Anthropocene: Are Humans Now Overwhelming the Great Forces of Nature
Steffen, W., Crutzen, P. J., & McNeill, J. R. (2007) · AMBIO: A Journal of the Human Environment · doi:10.1579/0044-7447(2007)36[614:taahno]2.0.co;2 · Cited by 3,487
Climate forcing reconstructions for use in PMIP simulations of the last millennium (v1.0)
Schmidt, G. A., Jungclaus, J. H., Ammann, C. M., Bard, E., Braconnot, P., Crowley, T. J., Delaygue, G., Joos, F., Krivova, N. A., Muscheler, R., et al. (2011) · Geoscientific Model Development · doi:10.5194/gmd-4-33-2011 · Cited by 499
How Long Have We Been in the Anthropocene Era?
Crutzen, P. J., & Steffen, W. (2003) · Climatic Change · doi:10.1023/b:clim.0000004708.74871.62 · Cited by 475
Stauffer, B., Flückiger, J., Monnin, E., Schwander, J., Barnola, J.-M., & Chappellaz, J. (2002) · Annals of Glaciology · doi:10.3189/172756402781816861 · Cited by 34
Metadata
- Authors
- Machida, T., Nakazawa, T., Fujii, Y., Aoki, S., & Watanabe, O.
- Venue
- Geophysical Research Letters
- Publisher
- American Geophysical Union (AGU)
- Published
- 1995-11
- Volume
- 22
- Issue
- 21
- Pages
- 2921-2924
- ISSN
- 0094-8276 (ISSN-L)
- 1944-8007
- OpenAlex
- W2025993619
- Cited by
- 182
- References
- 0
- FWCI
- 9.00
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Increase in the atmospheric nitrous oxide concentration during the last 250 years. https://app.cochat.ai/papers/10.1029/95gl02822
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- Machida, T., Nakazawa, T., Fujii, Y., Aoki, S., & Watanabe, O. (1995). Increase in the atmospheric nitrous oxide concentration during the last 250 years. Geophysical Research Letters. https://doi.org/10.1029/95gl02822
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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