英文标题：
《Economics of limiting cumulative CO2 emissions》
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作者：
Ashwin K Seshadri
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最新提交年份：
2017
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英文摘要：
Global warming from carbon dioxide (CO2) is known to depend on cumulative CO2 emissions. We introduce a model of global expenditures on limiting cumulative CO2 emissions, taking into account effects of decarbonization and rising global income and making an approximation to the marginal abatement costs (MAC) of CO2. Discounted mitigation expenditures are shown to be a convex function of cumulative CO2 emissions. We also consider minimum-expenditure solutions for meeting cumulative emissions goals, using a regularized variational method yielding an initial value problem in the integrated decarbonization rate. A quasi-stationary solution to this problem can be obtained for a special case, yielding decarbonization rate that is proportional to annual CO2 emissions. Minimum-expenditure trajectories in scenarios where CO2 emissions decrease must begin with rapid decarbonization at rate decreasing with time. Due to the shape of global MAC the fraction of global income spent on CO2 mitigation (\"burden\") generally increases with time, as cheaper avenues for mitigation are exhausted. Therefore failure to rapidly decarbonize early on reduces expenditures by a small fraction (on the order of 0.01 %) of income in the present, but leads to much higher burden to future generations (on the order of 1 % of income).
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中文摘要：
众所周知，二氧化碳（CO2）引起的全球变暖取决于累计CO2排放量。我们引入了一个限制累计CO2排放的全球支出模型，考虑了脱碳和全球收入增长的影响，并近似于CO2的边际减排成本（MAC）。贴现缓解支出是累积CO2排放量的凸函数。我们还考虑了满足累积排放目标的最小支出解决方案，使用正则化变分方法产生综合脱碳率的初值问题。对于特殊情况，可以获得该问题的准平稳解，脱碳率与年CO2排放量成正比。在二氧化碳排放量减少的情况下，最低支出轨迹必须从快速脱碳开始，脱碳速度随时间而降低。由于全球MAC的形状，随着更廉价的减排途径的耗尽，用于CO2减排的全球收入（“负担”）的比例通常会随着时间的推移而增加。因此，如果不尽早快速脱碳，目前的支出只会减少收入的一小部分（约0.01%），但会给后代带来更大的负担（约1%）。
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分类信息：

一级分类：Quantitative Finance 数量金融学
二级分类：Economics 经济学
分类描述：q-fin.EC is an alias for econ.GN. Economics, including micro and macro economics, international economics, theory of the firm, labor economics, and other economic topics outside finance
q-fin.ec是econ.gn的别名。经济学，包括微观和宏观经济学、国际经济学、企业理论、劳动经济学和其他金融以外的经济专题
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