Millennial‐Scale Changes in Terrestrial and Marine Nitrous Oxide Emissions at the Onset and Termination of Marine Isotope Stage 4
Millennial‐Scale Changes in Terrestrial and Marine Nitrous Oxide Emissions at the Onset and Termination of Marine Isotope Stage 4
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海洋同位素第四阶段开始和结束时陆地和海洋一氧化二氮排放的千禧年规模变化
DOI:
10.1029/2020gl089110
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发表时间:
2020
影响因子:
5.2
通讯作者:
Petrenko, V. V.
中科院分区:
文献类型:
--
作者:
Menking, J. A.;Brook, E. J.;Schilt, A.;Shackleton, S.;Dyonisius, M.;Severinghaus, J. P.;Petrenko, V. V.
Ice core measurements of the concentration and stable isotopic composition of atmospheric nitrous oxide (N2O) 74,000–59,000 years ago constrain marine and terrestrial emissions. The data include two major Dansgaard‐Oeschger (D‐O) events and the N2O decrease during global cooling at the Marine Isotope Stage (MIS) 5a‐4 transition. The N2O increase associated with D‐O 19 (~73–71.5 ka) was driven by equal contributions from marine and terrestrial emissions. The N2O decrease during the transition into MIS 4 (~71.5–67.5 ka) was caused by gradual reductions of similar magnitude in both marine and terrestrial sources. A 50 ppb increase in N2O concentration at the end of MIS 4 was caused by gradual increases in marine and terrestrial emissions between ~64 and 61 ka, followed by an abrupt increase in marine emissions at the onset of D‐O 16/17 (59.5 ka). This suggests that the importance of marine versus terrestrial emissions in controlling millennial‐scale N2O fluctuations varied in time.
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DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
R. Robinson;A. Mix;P. Martinez
通讯作者:
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DOI:
--
发表时间:
2008
期刊:
影响因子:
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作者:
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