A Collaborative Effort Toward Adding an Interactive Dynamical Vegetation Component to the NCAR Community Climate System Model (CCSM) Land Model

本研究的目的是提高社区气候系统模式（CCSM）的能力，通过帮助开发和实施一个动态植被组件到CCSM土地模式。目前的陆地模型虽然提供了陆地/大气之间水、热、动量和二氧化碳（CO2）交换的详细信息，但使用了规定的植被结构和覆盖率，因此无法评估植被和气候之间的重要反馈。一个动态的植被模型，其植被结构和覆盖度是最兼容的土地模型处方，已被选中集成到CCSM土地模型。主要的耦合实验将包括一个前工业模型运行，增强二氧化碳实验，和中全新世（6000年前）的古模拟。这项工作很重要，因为它将增加我们对植被-气候相互作用的理解，无论是在古时期还是在较短的时间尺度上。

The objective of this study is to improve the capability of the Community Climate System Model (CCSM) by helping to develop and implement a dynamic vegetation component into the CCSM land model. The present land model, while providing detailed information of water, heat, momentum, and carbon dioxide (CO2) exchanges between land/atmosphere, uses a prescribed vegetation structure and coverage and thus cannot assess important feedbacks between vegetation and climate. A dynamic vegetation model, whose vegetation structure and coverage is most compatible with the land model prescription, has been chosen to integrate into the CCSM land model. Major-coupled experiments will consist of a pre-industrial model run, enhanced CO2 experiments, and a paleo-simulation of the mid-Holocene (6000 years ago). The work is important because it will increase our understanding of vegetation-climate interactions, on both paleo and shorter time-scales.