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An online chemical transport model that can estimate the global distributions of N2O isotopomers in the stratosphere and the troposphere has been developed. Fractionation of isotopes during the photolysis and chemical reactions was estimated by using the temperature and radiative flux estimated in t...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.405.5596 http://www.jamstec.go.jp/esc/publication/annual/annual2010/pdf/2project/chapter1/059takigawa.pdf |
| Summary: | An online chemical transport model that can estimate the global distributions of N2O isotopomers in the stratosphere and the troposphere has been developed. Fractionation of isotopes during the photolysis and chemical reactions was estimated by using the temperature and radiative flux estimated in the model. To estimate the global distribution of N2O and its isotopomers, 20-years calculations have been executed. The isotopomers fractions in the emissions were estimated by assuming the isotopic fractions in various sources. The model well reproduced the vertical gradient of N2O concentration and the isotopomers fractions observed at Sanriku, Kiruna, and Showa-station. The averaged value of the isotopomers fraction in the model was close to that from the emissions from the anthropogenic emissions, especially cultivated soil. |
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