Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-4539-2017 |
Constraining N2O emissions since 1940 using firn air isotope measurements in both hemispheres | |
Prokopiou, Markella1; Martinerie, Patricia2; Sapart, Celia J.1,3; Witrant, Emmanuel4; Monteil, Guillaume1,5; Ishijima, Kentaro6; Bernard, Sophie2; Kaiser, Jan7; Levin, Ingeborg8; Blunier, Thomas9; Etheridge, David10; Dlugokencky, Ed11; van de Wal, Roderik S. W.1; Rockmann, Thomas1 | |
2017-04-05 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; France; Belgium; Sweden; Japan; England; Germany; Denmark; Australia; USA |
英文摘要 | N2O is currently the third most important anthropogenic greenhouse gas in terms of radiative forcing and its atmospheric mole fraction is rising steadily. To quantify the growth rate and its causes over the past decades, we performed a multi-site reconstruction of the atmospheric N2O mole fraction and isotopic composition using new and previously published firn air data collected from Greenland and Antarctica in combination with a firn diffusion and densification model. The multi-site reconstruction showed that while the global mean N2O mole fraction increased from (290 +/- 1) nmol mol(-1) in 1940 to (322 +/- 1) nmol mol(-1) in 2008, the isotopic composition of atmospheric N2O decreased by (-2.2 +/- 0.2)parts per thousand for delta N-15(av), (-1.0 +/- 0.3)parts per thousand for delta O-18, (-1.3 +/- 0.6)parts per thousand for delta N-15(alpha), and (-2.8 +/- 0.6)parts per thousand for delta N-15(beta) over the same period. The detailed temporal evolution of the mole fraction and isotopic composition derived from the firn air model was then used in a two-box atmospheric model (comprising a stratospheric box and a tropospheric box) to infer changes in the isotopic source signature over time. The precise value of the source strength depends on the choice of the N2O lifetime, which we choose to fix at 123 years. The average isotopic composition over the investigated period is delta N-15(av) = (-7.6 +/- 0.8)parts per thousand (vs. air-N-2), delta O-18 D (32.2 +/- 0.2)parts per thousand (vs. Vienna Standard Mean Ocean Water - VSMOW) for delta O-18, delta N-15(alpha) = (-3.0 +/- 1.9)parts per thousand and delta N-15(beta) = (-11.7 +/- 2.3) parts per thousand. delta N-15(av), and delta N-15(beta) show some temporal variability, while for the other signatures the error bars of the reconstruction are too large to retrieve reliable temporal changes. Possible processes that may explain trends in N-15 are discussed. The N-15 site preference (= delta N-15 alpha - delta N-15(beta)) provides evidence of a shift in emissions from denitrification to nitrification, although the uncertainty envelopes are large. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408273200001 |
WOS关键词 | ATMOSPHERIC NITROUS-OXIDE ; ICE CORE ; GAS CONCENTRATIONS ; MASS-SPECTROMETRY ; POLAR FIRN ; TRANSPORT ; BUDGET ; FRACTIONATION ; STRATOSPHERE ; ENRICHMENT |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/18399 |
专题 | 地球科学 |
作者单位 | 1.Inst Marine & Atmospher Res Utrecht, Utrecht, Netherlands; 2.Univ Grenoble Alpes, CNRS, IRD, IGE, F-38000 Grenoble, France; 3.ULB, Lab Glaciol, Brussels, Belgium; 4.Univ Grenoble Alpes, CNRS, GIPSA Lab, F-38000 Grenoble, France; 5.Lund Univ, Dept Phys Geog & Ecosyst Sci, Lund, Sweden; 6.Natl Inst Polar Res, Tokyo, Japan; 7.Univ East Anglia, Sch Environm Sci, Ctr Ocean & Atmospher Sci, Norwich, Norfolk, England; 8.Heidelberg Univ, Inst Environm Phys, Heidelberg, Germany; 9.Niels Bohr Inst, Ctr Ice & Climate, Copenhagen, Denmark; 10.CSIRO Marine & Atmospher Res, Parkville, Vic, Australia; 11.NOAA, Earth Sys Res Lab, Boulder, CO USA |
推荐引用方式 GB/T 7714 | Prokopiou, Markella,Martinerie, Patricia,Sapart, Celia J.,et al. Constraining N2O emissions since 1940 using firn air isotope measurements in both hemispheres[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(7). |
APA | Prokopiou, Markella.,Martinerie, Patricia.,Sapart, Celia J..,Witrant, Emmanuel.,Monteil, Guillaume.,...&Rockmann, Thomas.(2017).Constraining N2O emissions since 1940 using firn air isotope measurements in both hemispheres.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(7). |
MLA | Prokopiou, Markella,et al."Constraining N2O emissions since 1940 using firn air isotope measurements in both hemispheres".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.7(2017). |
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