SGER: Construction of 'Deep' Paleoclimate Community Climate System Model (CCSM) Simulations

该补助金将支持PI探索，演示和记录执行完全耦合的社区气候系统模型-3（CCSM-3）对“深层”古气候进行调查的过程，地球过去的边界条件-即地形，植被分布，痕量气体浓度，轨道参数-与现代有很大不同。PI将努力告知古气候社区如何最有效地利用CCSM进行古气候模拟。他将记录代码中的潜在缺陷。他将描述如何设置边界和初始条件，并将测试两个或两个以上的加速自旋技术，已开发的古气候。这项工作将记录与技术报告，网页，并建立这些实验的日常经验的网络'博客'。从这个意义上说，PI将提供一个“外展”服务的古气候社区更广泛的影响包括夹带的古气候社区更充分地进入CCSM作为一个社区建模设施。超过100名气候科学家，除了那些在主办机构，国家大气研究中心，NCAR，使用CCSM。然而，使用CCSM的大学古气候科学家的数量相对较少;大多数人使用该模型进行当代气候研究。一名研究生将得到支持，以帮助该项目。作为进一步的交付成果，PI将使自己和他的研究生能够参加大约四个现场动手研讨会，以非NCAR科学团体有兴趣使用CCSM-3进行古气候研究。

This grant will support the PI to explore, demonstrate, and document the process of performing fully coupled Community Climate System Model - 3 (CCSM-3) investigations of 'deep' paleoclimates, periods in Earth's past when boundary conditions--i.e. topographies, vegetation distributions, trace gas concentrations, orbital parameters--were substantially different than modern. The PI will work to inform the paleoclimate community how to most effectively take advantage of the CCSM for paleoclimate simulations. He will document potential pitfalls in the code. He will describe how to set up boundary and initial conditions, and will test two or more of the accelerated spin-up techniques that have been developed for paleoclimates. The work will be documented with a technical report, a web page, and a web 'blog' of the daily experiences of setting up these experiments. In this sense, the PI will provide an "outreach" service to the paleoclimate communityBroader impacts include the entrainment of the paleoclimate community more fully into the CCSM as a community modeling facility. Over 100 climate scientists, beyond those at the host institution, the National Center for Atmospheric Research, NCAR, use the CCSM. However, the number of university paleoclimate scientists that use the CCSM is relatively low; most use the model for contemporary climate studies. A graduate student will be supported to help with the project. As a further deliverable, the PI will make himself and his graduate student available for approximately four on-site hands-on workshops to non-NCAR scientific groups interested in using the CCSM-3 for paleoclimate studies.