globalchange  > 气候减缓与适应
DOI: 10.1002/grl.50721
Interannual variability in tropospheric nitrous oxide
Author: Thompson R.L.; Dlugokencky E.; Chevallier F.; Ciais P.; Dutton G.; Elkins J.W.; Langenfelds R.L.; Prinn R.G.; Weiss R.F.; Tohjima Y.; O'Doherty S.; Krummel P.B.; Fraser P.; Steele L.P.
Source Publication: Geophysical Research Letters
ISSN: 0094-8666
EISSN: 1944-8397
Publishing Year: 2013
Volume: 40, Issue:16
pages begin: 4426
pages end: 4431
Language: 英语
Keyword: ENSO ; interannual variability ; nitrous oxide
Scopus Keyword: Atmospheric circulation changes ; ENSO ; Interannual variability ; Lower stratospheric temperature ; Multivariate enso indices ; Nitrous oxide ; Stratosphere-to-troposphere transports ; Strong correlation ; Nitrogen oxides ; Soil moisture ; Sulfur hexafluoride ; Troposphere ; Climate change ; annual variation ; atmospheric circulation ; correlation ; El Nino-Southern Oscillation ; extratropical environment ; nitrous oxide ; precipitation (climatology) ; timescale ; troposphere
English Abstract: Observations of tropospheric N2O mixing ratio show significant variability on interannual timescales (0.2 ppb, 1 standard deviation). We found that interannual variability in N2O is weakly correlated with that in CFC-12 and SF6 for the northern extratropics and more strongly correlated for the southern extratropics, suggesting that interannual variability in all these species is influenced by large-scale atmospheric circulation changes and, for SF6 in particular, interhemispheric transport. N2O interannual variability was not, however, correlated with polar lower stratospheric temperature, which is used as a proxy for stratosphere-to-troposphere transport in the extratropics. This suggests that stratosphere-to-troposphere transport is not a dominant factor in year-to-year variations in N2O growth rate. Instead, we found strong correlations of N2O interannual variability with the Multivariate ENSO Index. The climate variables, precipitation, soil moisture, and temperature were also found to be significantly correlated with N2O interannual variability, suggesting that climate-driven changes in soil N2O flux may be important for variations in N2O growth rate. Key Points Analysis of tropospheric N2O inter-annual variability Tropospheric N2O inter-annual variability correlated with ENSO Climate driven variations in N2O soil emissions influence tropospheric N2O. © 2013. American Geophysical Union. All Rights Reserved.
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Document Type: 期刊论文
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Affiliation: Norwegian Institute for Air Research, Instituttveien 18, Kjeller 2027, Norway

Recommended Citation:
Thompson R.L.,Dlugokencky E.,Chevallier F.,et al. Interannual variability in tropospheric nitrous oxide[J]. Geophysical Research Letters,2013-01-01,40(16).
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