Trends and seasonal cycles in the isotopic composition of nitrous oxide since 1940

• Published in: Nature geoscience Vol. 5; no. 4; pp. 261 - 265
• Main Authors: Park, S., Croteau, P., Boering, K. A., Etheridge, D. M., Ferretti, D., Fraser, P. J., Kim, K-R., Krummel, P. B., Langenfelds, R. L., van Ommen, T. D., Steele, L. P., Trudinger, C. M.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.04.2012; Nature Publishing Group
• Subjects: 704/106; 704/106/47; Air sampling; Anthropogenic factors; Earth and Environmental Science; Earth Sciences; Earth System Sciences; Firn; Geochemistry; Geographical distribution; Geology; Geophysics/Geodesy; Greenhouse gases; letter; Nitrogen; Nitrous oxide; Ozone depletion; PSE, Australia, Tasmania, Cape Grim; PS, Antarctica

The atmospheric nitrous oxide concentration has increased by 20% since 1750. Analyses of Antarctic firn and archived air samples reveal seasonal cycles in the isotopic signature of nitrous oxide, which can help to disentangle the contribution of surface sources. The atmospheric nitrous oxide mixing...