Transfer efficiency of organic carbon in marine sediments.
Transfer efficiency of organic carbon in marine sediments.
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DOI:
10.1038/s41467-022-35112-9
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发表时间:
2022-11-26
影响因子:
16.6
通讯作者:
Arndt, Sandra
中科院分区:
文献类型:
--
作者:
Bradley, James A.;Hulse, Dominik;LaRowe, Douglas E.;Arndt, Sandra
Quantifying the organic carbon (OC) sink in marine sediments is crucial for assessing how the marine carbon cycle regulates Earth’s climate. However, burial efficiency (BE) – the commonly-used metric reporting the percentage of OC deposited on the seafloor that becomes buried (beyond an arbitrary and often unspecified reference depth) – is loosely defined, misleading, and inconsistent. Here, we use a global diagenetic model to highlight orders-of-magnitude differences in sediment ages at fixed sub-seafloor depths (and vice-versa), and vastly different BE’s depending on sediment depth or age horizons used to calculate BE. We propose using transfer efficiencies (Teff’s) for quantifying sediment OC burial: Teff is numerically equivalent to BE but requires precise specification of spatial or temporal references, and emphasizes that OC degradation continues beyond these horizons. Ultimately, quantifying OC burial with precise sediment-depth and sediment-age-resolved metrics will enable a more consistent and transferable assessment of OC fluxes through the Earth system. The burial of organic carbon in marine sediments regulates Earth’s carbon cycle and climate. Here, authors present ‘transfer efficiencies’ as a new framework for quantifying the sedimentary portion of the marine organic carbon cycle.
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影响因子:
2.9
作者:
BERNER, RA
通讯作者:
BERNER, RA
影响因子:
5.2
作者:
Martin, Kylara M.;Wood, Warren T.;Becker, Joseph J.
通讯作者:
Becker, Joseph J.
DOI:
10.1073/pnas.1918114117
发表时间:
2020-05-05
影响因子:
11.1
作者:
Buesseler, Ken O.;Boyd, Philip W.;Siegel, David A.
通讯作者:
Siegel, David A.
DOI:
10.1016/s0967-0637(96)00101-x
发表时间:
1997-02-01
影响因子:
2.4
作者:
Middelburg, JJ;Soetaert, K;Herman, PMJ
通讯作者:
Herman, PMJ
影响因子:
3.9
作者:
CANFIELD, DE
通讯作者:
CANFIELD, DE