Deep Time Paleoclimate Liaison Position to Support Community Use of the Paleoclimate CESM

第四纪前或深时间的气候模拟是第四纪模拟的重要补充。与第四纪气候相比，他们考虑了更广泛的强迫因子，特别是大气成分。尽管地理位置可能与今天大不相同，但这些时期也可能挑战我们对今天的土地分布、地形和海洋门户如何影响大气和海洋环流的理解。这些气候模拟还使科学家能够考虑各种反馈过程在气候系统中的作用。将地质、古生物学和同位素数据与气候模拟相结合，为减少气候敏感性等关键气候概念的不确定性提供了宝贵的信息。社区地球系统模型（CESM）是由科学界开发的一个全面的全耦合地球系统模型。这项活动的管理是基于国家大气研究中心（NCAR）。在过去几年中，它已经从一个耦合气候系统物理方面的模式发展成为一个考虑气溶胶化学、生物地球化学过程和冰盖模拟的模式。CESM正在实施同位素和其他地质示踪剂。为了给大学社区提供足够的支持，需要在NCAR有一个联络人。该职位将为为地质历史的各个时期配置CESM提供支持，在NCAR的超级计算机上进行时期模拟，并将模式模拟输出作为一个整体传播给古气候界。该联络还将为诊断模型模拟提供支持。该职位的设立和资助将确保气候模型和气候数据之间存在紧密联系。它将提供对加强气候科学至关重要的协同作用。该职位还将加强NCAR向大学社区提供的服务。

Climate simulations of pre-Quaternary or deep-time periods provide an important complement to simulations for the Quaternary. They consider a wider range of forcing factors, particularly for the composition of the atmosphere, than for Quaternary climates. Although the geography can be quite different from today, these periods can also challenge our understanding of how today's land distribution, topography, and ocean gateways influence the atmospheric and ocean circulations. These climate simulations also enable scientists to consider the role of various feedback processes in the climate system.Combining geological, paleontological and isotopic data with climate simulations provides invaluable information for reducing uncertainties in key climate concepts such as climate sensitivity. The Community Earth System Model (CESM) is a comprehensive fully coupled Earth system model developed by the scientific community. The management of this activity is based at the National Center for Atmospheric Research (NCAR). It has evolved over the last few years from a model coupling the physical aspects of the climate system to a model that considers the simulation of aerosol chemistry, biogeochemical processes and ice sheets. Underway is the implementation of isotopes and other geotracers in CESM.To provide adequate support to the university community requires a liaison at NCAR. This position would provide support for configuring the CESM for various time periods of the geologic past, carry out simulations of time periods on supercomputers at NCAR, and disseminate model simulation output to the paleoclimate community as a whole. The liaison would also provide support for diagnosing model simulations. The creation and funding of this position would insure that a strong connection exists between climate modeling and climate data. It will provide a synergism that is essential for enhancing the climate sciences. This position would also enhance the services provided by NCAR to the university community.