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Röckmann, Thomas, Kaiser, Jan 
ORCID: https://orcid.org/0000-0002-1553-4043, Brenninkmeijer, Carl A. M., Crowley, John N., Borchers, Reinhard, Brand, Willi A. and Crutzen, Paul J.
(2001)
Isotopic enrichment of nitrous oxide (15N14NO, 14N15NO, 14N14N18O) in the stratosphere and in the laboratory.
Journal of Geophysical Research, 106 (D10).
pp. 10403-10410.
ISSN 0148-0227
Abstract
Nitrous oxide (N2O) extracted from stratospheric whole air samples has been analyzed for its 15N and 18O isotopic composition, and strong enrichments in the heavy isotopes are observed concomitant with decreasing N2O mixing ratio. Notably, the N enrichment is strongly different at the two nonequivalent positions in the molecule. Laboratory broadband photolysis experiments at wavelengths representative for the stratosphere confirm that photolysis is the prime cause for the observed fractionation in the stratosphere. However, the in situ stratospheric fractionation constants are significantly reduced compared to the laboratory data, reflecting the importance of dynamic processes. In addition, small but significant variations in the ratio of the two 15N fractionation constants indicate the influence of additional chemical processes like the oxidation of N2O by O(1 D).
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Environmental Sciences University of East Anglia Research Groups/Centres > Theme - ClimateUEA |
| UEA Research Groups: | Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Atmospheric Chemistry (former - to 2018) Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017) |
| Depositing User: | Rosie Cullington |
| Date Deposited: | 15 Jun 2011 10:54 |
| Last Modified: | 20 Mar 2023 10:36 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/32606 |
| DOI: | 10.1029/2000JD900822 |
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