Collaborative Research: Analysis of Simulated and Observed Changes in Climate and Environments Across the Permian Deglaciation

Ziegler, Alfred M.芝加哥大学题目：合作研究：二叠纪冰川消融期间气候和环境的模拟和观测变化分析二叠纪包含了从大冰川到完全无冰状态的过渡。这种转变被归因于大气中二氧化碳的增加，因此可以在地质记录中为人类对地球系统的扰动可能造成的结果提供类比。该合同支持一个项目，将有关Permian环境的大量信息来源整合到一个统一的关系数据库中。这将允许对数据模式及其时空关系进行全球评估，并将有助于确定局部变化是由大陆运动引起的，还是由“全球变化”引起的。这项工作的另一个方面是确定古气候指标的可靠性（例如，测年的不确定性），从而确定如何明确地使用这些数据来验证气候模式的预测。这些实验将建立古地理和大气CO2两个重要气候强迫因子对二叠纪时期现实变化的敏感性，以及它们在解释二叠纪大尺度冰川消融特征中的作用。

Abstract ATM-9632286 Ziegler, Alfred M. University of Chicago Title: Collaborative Research: Analysis of Simulated and Observed Changes in Climate and Environments Across the Permian Deglaciation The Permian Period contains a transition from a major glaciation to a fully ice-free state. This transition has been ascribed to an increase in atmospheric CO2, and could thus provide an analog in the geologic record for the likely results of human perturbations to the Earth system over the next millennium. This award supports a project to assemble the extensive sources of information on the Permian environment into a unified relational database. This will permit a global assessment of data patterns and their temporal and spatial relationships and will help to determine whether local changes are due to continental motions, rather than "global change." Another aspect of this work is to determine the reliability of the paleoclimate indicators (e.g. dating uncertainties), and thus how unequivocally such data may be used to validate the climate model predictions. These experiments will establish the sensitivity to realistic changes during the Permian in two important climate forcing factors, paleogeography and atmospheric CO2, and their role in explaining the large-scale features of the Permian deglaciation.