The Carbon Dioxide Removal Model Intercomparison Project (CDRMIP): rationale and experimental protocol for CMIP6
The Carbon Dioxide Removal Model Intercomparison Project (CDRMIP): rationale and experimental protocol for CMIP6
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DOI：
10.5194/gmd-11-1133-2018
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发表时间：
2018-03-29
影响因子：
5.1
通讯作者：
Zickfeld, Kirsten
中科院分区：
文献类型：
--
作者：
Keller, David P.;Lenton, Andrew;Zickfeld, Kirsten
气候小组最近的报告指出，持续的人为温室气体排放正在改变气候，可能造成"严重、普遍和不可逆转的"影响。减缓气候变化的减排进展缓慢，导致人们越来越关注所谓的地球工程，气候工程或气候干预-旨在应对气候变化的故意干预措施，旨在改变地球的辐射预算或从大气中清除二氧化碳等温室气体。当关注二氧化碳时，这些类别中的后一个被称为二氧化碳去除（CDR）。未来的排放情景保持远低于2摄氏度，以及到2100年变暖不超过1.5摄氏度的所有排放情景，都需要某种形式的CDR。目前，人们对不同类型的拟议CDR的气候影响和大气CO2减排效果几乎没有共识。为了满足这一需求，启动了二氧化碳去除模型相互比较项目（CDRMIP）。该项目将地球系统的模型汇集在一个共同的框架中，以探索CDR的潜力，影响和挑战。在这里，我们描述了第一组CDRMIP实验，这是正式的第6耦合模型相互比较项目（CMIP6）的一部分。这些实验旨在解决有关减少灾害风险引起的气候"可逆性"、地球系统对直接大气CO2清除（直接空气捕获和储存）的反应、减少灾害风险的潜力和植树造林和重新造林的影响以及海洋碱化等问题。
The recent IPCC reports state that continued anthropogenic greenhouse gas emissions are changing the climate, threatening "severe, pervasive and irreversible" impacts. Slow progress in emissions reduction to mitigate climate change is resulting in increased attention to what is called geoengineering, climate engineering, or climate intervention - deliberate interventions to counter climate change that seek to either modify the Earth's radiation budget or remove greenhouse gases such as CO2 from the atmosphere. When focused on CO2, the latter of these categories is called carbon dioxide removal (CDR). Future emission scenarios that stay well below 2 degrees C, and all emission scenarios that do not exceed 1.5 degrees C warming by the year 2100, require some form of CDR. At present, there is little consensus on the climate impacts and atmospheric CO2 reduction efficacy of the different types of proposed CDR. To address this need, the Carbon Dioxide Removal Model Intercomparison Project (or CDRMIP) was initiated. This project brings together models of the Earth system in a common framework to explore the potential, impacts, and challenges of CDR. Here, we describe the first set of CDRMIP experiments, which are formally part of the 6th Coupled Model Intercomparison Project (CMIP6). These experiments are designed to address questions concerning CDR-induced climate "reversibility", the response of the Earth system to direct atmospheric CO2 removal (direct air capture and storage), and the CDR potential and impacts of afforestation and reforestation, as well as ocean alkalinization.