The Canadian Optimized High-Resolution Representation of the National Terrestrial Carbon Cycle (COHERENT-C)

加拿大国家陆地碳循环优化高分辨率表示（COHERENT-C）项目是加拿大学术碳科学界与加拿大环境和气候变化（ECCC）之间的伙伴关系。该项目的主要目标是迅速提高加拿大的技能，代表和预测加拿大的陆地碳循环的气候，扰动和大气温室气体浓度的演变。该项目的成果将包括：1）为决策者提供的关于加拿大碳汇和碳源过去和未来状况的年度总结; 2）详细介绍加拿大森林、湿地和北部碳循环过程脆弱性的科学出版物和介绍。 通过解决这些知识差距，我们将支持加拿大利用基于自然的解决方案应对气候变化的能力，并提供全国适应气候变化所需的气候预报。为了实现这些成果，COHERENT-C将动员大量的学术和政府合作者，以改善ECCC的开源社区模型，包括生物地球化学循环（CLASSIC）的加拿大陆地表面计划。CLASSIC是ECCC地球系统模型家族的陆地部分，被气候科学、影响和适应社区使用。为了更好地代表加拿大的碳预算，需要开发CLASSIC的四个领域：1）北方森林，2）泥炭地，3）北极生态系统，4）对这些生态系统的干扰影响。COHERENT-C将是加拿大陆地碳循环综合过程建模的第一次尝试，并将用于预测我们管理和未管理土地的碳汇和碳源状况未来可能如何变化。这些努力的目的是支持加拿大气候变化特别委员会执行《清洁增长和气候变化泛加拿大框架》，并为加拿大履行关于减缓气候变化和可持续发展的国际承诺的战略提供信息。

The Canadian Optimized High-Resolution Representation of the National Terrestrial Carbon Cycle (COHERENT-C) project is a partnership between Canada's academic carbon science community and Environment and Climate Change Canada (ECCC). The main objective of this project is to rapidly advance Canada's skill at representing and predicting Canada's terrestrial carbon cycle as climate, disturbances, and atmospheric greenhouse gas concentrations evolve. The results of this project will include 1) annual summaries for policy makers on the past and future state of Canada's carbon sinks and sources, and 2) scientific publications and presentations detailing an improved understanding of the vulnerability of carbon cycle processes in Canadian forests, wetlands, and the North. By addressing these knowledge gaps, we will support Canada's ability to harness nature-based solutions to combat climate change and provide climate forecasts needed for climate change adaptation throughout the country. To achieve these results, COHERENT-C will mobilize a large group of academic and government collaborators to improve ECCC's open source community model, the Canadian Land Surface Scheme including Biogeochemical Cycles (CLASSIC). CLASSIC is the land component of ECCC's family of Earth System Models used by the climate science, impacts, and adaptation communities. The four areas of CLASSIC to be developed to better represent Canada's carbon budget are: 1) boreal forests, 2) peatlands, 3) Arctic ecosystems, and 4) disturbance impacts on these ecosystems. COHERENT-C will be the first attempt at a comprehensive process-based modelling of Canada's terrestrial carbon cycle and will be used to predict how the carbon sink and source status of our managed and unmanaged lands may change in the future. These efforts are aimed at supporting ECCC's implementation of the Pan-Canadian Framework on Clean Growth and Climate Change and inform strategies to meet Canada's international commitments on climate change mitigation and sustainable development.