气候变化领域集成服务门户(CCPortal): Efficacy of geoengineering to limit 21st century sea-level rise

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DOI	10.1073/pnas.1008153107
	Efficacy of geoengineering to limit 21st century sea-level rise
	Moore J.C.; Jevrejevad S.; Grinstede A.
发表日期	2010
ISSN	0027-8424
起始页码	15699
结束页码	15703
卷号	107 期号:36
英文摘要	Geoengineering has been proposed as a feasible way of mitigating anthropogenic climate change, especially increasing global temperatures in the 21st century. The two main geoengineering options are limiting incoming solar radiation, or modifying the carbon cycle. Here we examine the impact of five geoengineering approaches on sea level; SO2 aerosol injection into the stratosphere, mirrors in space, afforestation, biochar, and bioenergy with carbon sequestration. Sea level responds mainly at centennial time scales to temperature change, and has been largely driven by anthropogenic forcing since 1850. Making use a model of sea-level rise as a function of time-varying climate forcing factors (solar radiation, volcanism, and greenhouse gas emissions) we find that sea-level rise by 2100 will likely be 30 cm higher than 2000 levels despite all but the most aggressive geoengineering under all except the most stringent greenhouse gas emissions scenarios. The least risky and most desirable way of limiting sea-level rise is bioenergy with carbon sequestration. However aerosol injection or a space mirror system reducing insolation at an accelerating rate of 1 W m-2 per decade from now to 2100 could limit or reduce sea levels. Aerosol injection delivering a constant 4 W m-2 reduction in radiative forcing (similar to a 1991 Pinatubo eruption every 18 months) could delay sea-level rise by 40-80 years. Aerosol injection appears to fail cost-benefit analysis unless it can be maintained continuously, and damage caused by the climate response to the aerosols is less than about 0.6% Global World Product.
英文关键词	Aerosols; Carbon capture; Climate change; Cost-benefit
语种	英语
scopus关键词	carbon; aerosol; afforestation; article; bioenergy; carbon cycle; carbon sequestration; climate change; geoengineering; geology; greenhouse gas; injection; priority journal; radiation; sea level rise; solar radiation; stratosphere; volcano; Pinatubo
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158945
作者单位	Moore, J.C., College of Global Change and Earth System Science, Beijing Normal University, China, Arctic Centre, University of Lapland, PL122, 96100 Rovaniemi, Finland, Thule Institute, University of Oulu, PL3000, 90014 Oulun Yliopisto, Finland; Jevrejevad, S., National Oceanography Centre, Joseph Proudman Building, 6 Brownlow Street, Liverpool L3 5DA, United Kingdom; Grinstede, A., Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
推荐引用方式 GB/T 7714	Moore J.C.,Jevrejevad S.,Grinstede A.. Efficacy of geoengineering to limit 21st century sea-level rise[J],2010,107(36).
APA	Moore J.C.,Jevrejevad S.,&Grinstede A..(2010).Efficacy of geoengineering to limit 21st century sea-level rise.Proceedings of the National Academy of Sciences of the United States of America,107(36).
MLA	Moore J.C.,et al."Efficacy of geoengineering to limit 21st century sea-level rise".Proceedings of the National Academy of Sciences of the United States of America 107.36(2010).