Historical warming reduced due to enhanced land carbon uptake

Shevliakova E.; Stouffer R.J.; Malyshev S.Krasting J.P.Hurtt G.C.Pacala S.W.

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Historical warming reduced due to enhanced land carbon uptake

机译：Historical warming reduced due to enhanced land carbon uptake

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Previous studies have demonstrated the importance of enhanced vegetation growth under future elevated atmospheric CO_2 for 21st century climate warming. Surprisingly no study has completed an analogous assessment for the historical period, during which emissions of greenhouse gases increased rapidly and landuse changes (LUC) dramatically altered terrestrial carbon sources and sinks. Using the Geophysical Fluid Dynamics Laboratory comprehensive Earth System Model ESM2G and a reconstruction of the LUC, we estimate that enhanced vegetation growth has lowered the historical atmospheric CO_2 concentration by 85 ppm, avoiding an additional 0.31 ± 0.06 °C warming. We demonstrate that without enhanced vegetation growth the total residual terrestrial carbon flux (i.e., the net land flux minus LUC flux) would be a source of 65-82 Gt of carbon (GtC) to atmosphere instead of the historical residual carbon sink of 186-192 GtC, a carbon saving of 251-274 GtC.

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《Proceedings of the National Academy of Sciences of the United States of America》 |2013年第42期|16730-16735|共6页
作者
Shevliakova E.; Stouffer R.J.; Malyshev S.Krasting J.P.Hurtt G.C.Pacala S.W.;
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作者单位

Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ 08544, United States;

Geophysical Fluid Dynamics Laboratory, National Oceanic and Atmospheric Administration, Princeton, NJ 08540, United States;

Department of Geographical Sciences, University of Maryland, College Park, MD 20742, United States;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
Carbon sink; Climate change; Earth system modeling;

Historical warming reduced due to enhanced land carbon uptake

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