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与气候变化（ECCC）之间的合作伙伴关系。该项目的主要目标是迅速提高加拿大在气候、干扰和大气温室气体浓度演变过程中表现和预测加拿大陆地碳循环的技能。该项目的成果将包括：1)为决策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)科学出版物和报告，详细介绍对加拿大森林、湿地和北部地区碳循环过程脆弱性的进一步了解。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来应对气候变化的能力，并为全国各地的气候变化适应提供所需的气候预测。

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.