Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD029008 |
Changes in the Isotopic Signature of Atmospheric Nitrous Oxide and Its Global Average Source During the Last Three Millennia | |
Prokopiou, M.1; Sapart, C. J.1,2; Rosen, J.3; Sperlich, P.4,5; Blunier, T.5; Brook, E.3; van de Wal, R. S. W.1; Rockmann, T.1 | |
2018-09-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:18页码:10757-10773 |
文章类型 | Article |
语种 | 英语 |
国家 | Netherlands; Belgium; USA; New Zealand; Denmark |
英文摘要 | Nitrous oxide (N2O) is a strong greenhouse gas whose mole fraction in the atmosphere has increased over the industrial period. We present a new set of isotope measurements of N2O in air extracted from ice cores covering the last 3,000years. For the preindustrial (PI) atmosphere, we find an average N2O mole fraction of (2671) nmol/mol and average tropospheric N2O isotopic values of N-15(PI)av=(9.50.1), O-18(PI)=(47.10.2)parts per thousand, N-15(PI)=(17.8 +/- 0.4)parts per thousand, and (15)(PI)=(1.2 +/- 0.4)parts per thousand. From PI to modern times all isotope signatures decreased with a total change of N-15(av)=(2.7 +/- 0.2)parts per thousand, O-18=(2.5 +/- 0.4)parts per thousand, N-15=(2.0 +/- 0.7)parts per thousand, and (15) (3.5 +/- 0.7)parts per thousand. Interestingly, the temporal evolution is not the same for N-15(av) and O-18. O-18 trends are relatively larger during the early part, and N-15(av) trends are larger during the late part of the industrial period, implying a decoupling of sources over the industrial period. Using a mass balance model, we determined the isotopic composition of the total average N2O source. Assuming that the total present source is the sum of a constant natural source and an increasing anthropogenic source, this anthropogenic source has an isotopic signature of N-15(source,anthrop)av=(15.0 +/- 2.6)parts per thousand, O-18(source,anthrop)=(30.0 +/- 2.6)parts per thousand, N-15(source,anthrop)=(4.5 +/- 1.7)parts per thousand, and N-15(source,anthrop)=(24.0 +/- 8.4)parts per thousand. The N-15 site preference of the source has increased since PI times, which is indicative of a relative shift from denitrification to nitrification sources, consistent with agricultural emissions playing a major role in the N2O increase. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000447807300040 |
WOS关键词 | ICE CORE ; NORTH PACIFIC ; N2O BUDGET ; O-18 ; DENITRIFICATION ; FRACTIONATION ; CONSTRAINTS ; RECORDS ; CLIMATE ; METHANE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/32384 |
专题 | 气候变化 |
作者单位 | 1.Univ Utrecht, Inst Marine & Atmospher Res Utrecht, Utrecht, Netherlands; 2.Univ Libre Bruxelles, Lab Glaciol, Brussels, Belgium; 3.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA; 4.Natl Inst Water & Atmospher Res, Wellington, New Zealand; 5.Univ Copenhagen, Niels Bohr Inst, Ctr Ice & Climate, Copenhagen, Denmark |
推荐引用方式 GB/T 7714 | Prokopiou, M.,Sapart, C. J.,Rosen, J.,et al. Changes in the Isotopic Signature of Atmospheric Nitrous Oxide and Its Global Average Source During the Last Three Millennia[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(18):10757-10773. |
APA | Prokopiou, M..,Sapart, C. J..,Rosen, J..,Sperlich, P..,Blunier, T..,...&Rockmann, T..(2018).Changes in the Isotopic Signature of Atmospheric Nitrous Oxide and Its Global Average Source During the Last Three Millennia.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(18),10757-10773. |
MLA | Prokopiou, M.,et al."Changes in the Isotopic Signature of Atmospheric Nitrous Oxide and Its Global Average Source During the Last Three Millennia".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.18(2018):10757-10773. |
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