Supporting Community Use of the Community Earth System Model for Polar Science

支持社区使用社区地球系统模型进行极地科学

• 批准号: 1203303
• 负责人: Marika Holland
• 金额: $ 10万
• 依托单位: University Corporation For Atmospheric Res
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1203303&HistoricalAwards=false
• 关键词: Supporting; Community; Use; Earth; System

Climate models have consistently indicated that polar regions are among the most sensitive to perturbations in climate forcing. This has been born out in recent years as the Arctic has undergone significant warming and unprecedented sea ice loss. In contrast, Antarctic sea ice has experienced little consistent long-term hemispheric change. Climate model studies suggest this is related to Southern Ocean heat uptake and is influenced by trends in atmospheric modes of variability. Although a basic understanding has been obtained, much remains unknown about the complex interactions in both polar regions and the relative role of various processes. The current generation of Earth system models have higher resolution and incorporate new physics and capabilities. As such, they provide increasingly powerful virtual laboratories to investigate polar climate processes. Model improvements based on observations and process understanding are needed to further increase the fidelity and predictive capability of earth system model projections.Broader impacts: The complexity and inaccessibility of existing earth system models has long been a barrier to their widespread use. The Community Earth System Model (CESM), which is based at the National Center for Atmospheric Research (NCAR), is a true community model, built and used by the broad earth science research community to understand a wide variety of processes. Unlike other earth system modeling efforts, the CESM source code and simulation output are made freely available to the scientific community through supported releases. The broad research community is invited to participate in model development, analysis, and experimental design through involvement in working groups, including the Polar Climate Working Group (PCWG), that are open to all participants. Enabling fruitful interactions that allow the broader research community to be involved in the development and use of an earth system model requires resources. This proposal will enable the use and development of CESM by the polar science community through funding to support liaisons between the Polar Climate Working Group and the scientific community.

气候模型一直表明，极地地区是对气候强迫扰动最敏感的地区之一。近年来，随着北极经历了显著的变暖和前所未有的海冰消失，这一现象应运而生。相比之下，南极海冰几乎没有经历过长期的半球变化。气候模型研究表明，这与南大洋的热量吸收有关，并受到大气变率模式趋势的影响。虽然已经取得了基本的了解，但关于两极地区的复杂相互作用和各种过程的相对作用仍有许多未知之处。当前一代的地球系统模型具有更高的分辨率，并纳入了新的物理和功能。因此，它们提供了越来越强大的虚拟实验室来研究极地气候过程。需要在观测和过程理解的基础上改进模型，以进一步提高地球系统模型项目的保真度和预测能力。广泛的影响：现有地球系统模型的复杂性和不可访问性长期以来一直是其广泛使用的障碍。设在美国国家大气研究中心(NCAR)的社区地球系统模型(CESM)是一个真正的社区模型，由广泛的地球科学研究社区建立和使用，以了解广泛的各种过程。与其他地球系统建模工作不同，CESM源代码和模拟输出通过支持的版本免费提供给科学界。广泛的研究界被邀请通过参与包括极地气候工作组(PCWG)在内的向所有参与者开放的工作组来参与模型的开发、分析和实验设计。要实现富有成效的互动，使更广泛的研究界能够参与地球系统模型的开发和使用，需要资源。这项提案将通过资助极地气候工作组和科学界之间的联络，使极地科学界能够使用和发展环境科学监测系统。