| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1088/1748-9326/10/7/075001 |
| Impact of short-lived non-CO2 mitigation on carbon budgets for stabilizing global warming. | |
| Rogelj J; Meinhausen M; Schaffer M; Knutti R; Riahi K | |
| 发表日期 | 2015 |
| 出处 | Environmental Research Letters 10 (7): no.075001 |
| 出版年 | 2015 |
| 语种 | 英语 |
| 摘要 | Limiting global warming to any level requires limiting the total amount of CO2 emissions, or staying within a CO2 budget. Here we assess how emissions from short-lived non-CO2 species like methane, hydrofluorocarbons (HFCs), black-carbon, and sulphates influence these CO2 budgets. Our default case, which assumes mitigation in all sectors and of all gases, results in a CO2 budget between 2011-2100 of 340 PgC for a >66% chance of staying below 2 degrees C, consistent with the assessment of the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Extreme variations of air-pollutant emission from black-carbon and sulphates influence this budget by about +/-5%. In the hypothetical case of no methane or HFCs mitigation - which is unlikely when CO2 is stringently reduced - the budgets would be much smaller (40% or up to 60%, respectively). However, assuming very stringent CH4 mitigation as a sensitivity case, CO2 budgets could be 25% higher. A limit on cumulative CO2 emissions remains critical for temperature targets. Even a 25% higher CO2 budget still means peaking global emissions in the next two decades, and achieving net zero CO2 emissions during the third quarter of the 21st century. The leverage we have to affect the CO2 budget by targeting non-CO2 diminishes strongly along with CO2 mitigation, because these are partly linked through economic and technological factors. |
| 主题 | Energy (ENE) |
| 关键词 | climate change carbon budget cumulative carbon short-lived climate pollutants global warming carbon dioxide |
| URL | http://pure.iiasa.ac.at/id/eprint/11424/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/130205 |
| 推荐引用方式 GB/T 7714 | Rogelj J,Meinhausen M,Schaffer M,et al. Impact of short-lived non-CO2 mitigation on carbon budgets for stabilizing global warming.. 2015. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Impact%20of%20short-（888KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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