The millennial atmospheric lifetime of anthropogenic CO2
نویسندگان
چکیده
منابع مشابه
The millennial atmospheric lifetime of anthropogenic CO2
The notion is pervasive in the climate science community and in the public at large that the climate impacts of fossil fuel CO2 release will only persist for a few centuries. This conclusion has no basis in theory or models of the atmosphere/ocean carbon cycle, which we review here. The largest fraction of the CO2 recovery will take place on time scales of centuries, as CO2 invades the ocean, b...
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Multimillennial simulations with a fully coupled climate–carbon cycle model are examined to assess the persistence of the climatic impacts of anthropogenic CO2 emissions. It is found that the time required to absorb anthropogenic CO2 strongly depends on the total amount of emissions; for emissions similar to known fossil fuel reserves, the time to absorb 50% of the CO2 is more than 2000 yr. The...
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Millennial-scale climate changes during the last glacial period and deglaciation were accompanied by rapid changes in atmospheric CO2 that remain unexplained. While the role of the Southern Ocean as a 'control valve' on ocean-atmosphere CO2 exchange has been emphasized, the exact nature of this role, in particular the relative contributions of physical (for example, ocean dynamics and air-sea g...
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[1] Monthly estimates of the global emissions of anthropogenic CO2 are presented. Approximating the seasonal CO2 emission cycle using a 2-harmonic Fourier series with coefficients as a function of latitude, the annual fluxes are decomposed into monthly flux estimates based on data for the United States and applied globally. These monthly anthropogenic CO2 flux estimates are then used to model a...
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During the last glacial period and particularly Marine Isotope Stage 3, North Atlantic Deep Water (NADW) formation weakened significantly on a millennial timescale leading to Greenland stadials (Kissel et al. 2008). Ice core records reveal that each Greenland stadial is associated with a warming over Antarctica, so-called Antarctic Isotope Maximum (AIM) (EPICA and Community Members 2006). Recen...
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ژورنال
عنوان ژورنال: Climatic Change
سال: 2008
ISSN: 0165-0009,1573-1480
DOI: 10.1007/s10584-008-9413-1