IAM_COMPACT_NDCs_LTTs_Database

This dataset contains Nationally Determined Contributions (NDCs) for 2030, and new long-term strategies (LTSs) for 2050, which were put in place in the run-up to, during, and after the COP26 conference. NDC targets reflect the level of short-term ambition to which most countries are dedicated to through law or policy, but with risks of falling short if dedication is not high enough and/or changes occur in the political landscape. Long-term targets (LTT) reflect the level of longer-term ambition which many countries have stated to fulfil their part in mitigating climate change, but in most cases not backed with an actual policy agenda. These will come on top of pledged NDC targets, to create another increased level of proposed ambition. These pledges will be included for each separate model region as a linear pathway from the 2030 NDC target (NDC_LTT).本数据集收录了2030年国家自主贡献（Nationally Determined Contributions, NDCs）以及2050年长期战略（long-term strategies, LTSs）相关文件，上述文件均为在第26届联合国气候变化大会（COP26）筹备、举办及会后阶段制定并发布的。 国家自主贡献目标反映了多数国家通过法律或政策确立的短期气候行动雄心水平，但倘若国家承诺力度不足或政治格局发生变动，则存在无法达成既定目标的风险。 长期目标（Long-Term Targets, LTT）则反映了多数国家为履行气候变化减缓责任所提出的长期气候行动雄心，但多数情况下尚未配套实质性政策框架。此类目标将叠加于已承诺的国家自主贡献目标之上，进一步提升整体拟议行动的雄心层级。本数据集将针对每个独立模型区域，收录从2030年国家自主贡献目标到长期目标的线性路径（记为NDC_LTT）。