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

加拿大国家陆地碳循环(Coherent-C)项目的加拿大优化高分辨率表示是加拿大学术碳科学界与加拿大环境和气候变化(ECCC)之间的合作伙伴关系。该项目的主要目标是随着气候、扰动和大气温室气体浓度的演变，迅速提高加拿大在表示和预测加拿大陆地碳循环方面的技能。该项目的成果将包括：1)为政策制定者提供关于加拿大碳汇和碳源过去和未来状况的年度总结；2)科学出版物和演示文稿，详细介绍加拿大森林、湿地和北部地区碳循环过程的脆弱性。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，并在全国范围内提供适应气候变化所需的气候预报。为了实现这些结果，Coherent-C将动员一大批学术和政府合作者来改进ECCC的开源社区模型，即包括生物地球化学循环的加拿大陆地表面计划(CLASSIC)。经典是ECCC地球系统模型家族中的陆地组成部分，由气候科学、影响和适应团体使用。为了更好地代表加拿大的碳收支，需要开发的四个经典领域是：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将是对加拿大陆地碳循环进行基于过程的全面建模的第一次尝试，并将用于预测我们管理的和未管理的土地的碳汇和碳源状态未来可能会如何变化。这些努力旨在支持ECCC实施《泛加拿大清洁增长和气候变化框架》，并为实现加拿大在缓解气候变化和可持续发展方面的国际承诺提供战略信息。

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.