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Control of atmospheric CO_2 concentrations by 2050: A calculation on the emission rights of different countries
DING ZhongLi1; DUAN XiaoNan2; GE QuanSheng3; ZHANG ZhiQiang4
2009
Source PublicationScience in China. Series D: Earth Sciences
ISSN1006-9313
Volume52Issue:10Pages:1447
AbstractThis paper is to provide quantitative data on some critical issues in anticipation of the forthcoming international negotiations in Denmark on the control of atmospheric CO_2 concentrations. Instead of letting only a small number of countries dominate a few controversial dialogues about emissions re-ductions, a comprehensive global system must be established based on emissions allowances for different countries, to realize the long-term goal of controlling global atmospheric CO_2 concentrations.That a system rooted in "cumulative emissions per capita," the best conception of the "common but differentiated responsibilities" principle affirmed by the Kyoto Protocol according to fundamental standards of fairness and justice, was demonstrated. Based on calculations of various countries' cu-mulative emissions per capita, estimates of their cumulative emissions from 1900 to 2005, and their annual emissions allowances into the future (2006-2050), a 470 ppmv atmospheric CO_2 concentration target was set. According to the following four objective indicators-total emissions allowance from 1900 to 2050, actual emissions from 1900 to 2005, emissions levels in 2005, and the average growth rate of emissions from 1996 to 2005-all countries and regions whose population was more than 300000 in 2005 were divided into four main groups: countries with emissions deficits, countries and regions needing to reduce their gross emissions, countries and regions needing to reduce their emissions growth rates, and countries that can maintain the current emissions growth rates. Based on this pro-posal, most G8 countries by 2005 had already expended their 2050 emissions allowances. The accu-mulated financial value based on emissions has reached more than 5.5 trillion US dollars (20 dollars per ton of CO_2). Even if these countries could achieve their ambitious emissions reduction targets in the future, their per capita emissions from 2006 to 2050 would still be much higher than those of de-veloping countries; under such circumstance, these future emissions would create more than 6.3 tril-lion US dollars in emissions deficits. Because of their low cumulative emissions per capita, most de-veloping countries fall within one of the latter two groups, which means that they have leeway for making emissions decisions in the future. Although China accounts for more than 30% of the total global emissions allowance from 2006 to 2050, its total emissions can be controlled within that allow-ance by no other way than reducing its future emissions growth rates. In the end, nine key issues re-lated to international climate negotiations were briefly addressed.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/121792
Collection中国科学院地理科学与资源研究所
Affiliation1.中国科学院地质与地球物理研究所
2.中国科学院办公厅
3.中国科学院地理科学与资源研究所
4.中国科学院兰州文献情报中心
Recommended Citation
GB/T 7714
DING ZhongLi,DUAN XiaoNan,GE QuanSheng,et al. Control of atmospheric CO_2 concentrations by 2050: A calculation on the emission rights of different countries[J]. Science in China. Series D: Earth Sciences,2009,52(10):1447.
APA DING ZhongLi,DUAN XiaoNan,GE QuanSheng,&ZHANG ZhiQiang.(2009).Control of atmospheric CO_2 concentrations by 2050: A calculation on the emission rights of different countries.Science in China. Series D: Earth Sciences,52(10),1447.
MLA DING ZhongLi,et al."Control of atmospheric CO_2 concentrations by 2050: A calculation on the emission rights of different countries".Science in China. Series D: Earth Sciences 52.10(2009):1447.
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