The CCSM3 Deep Time Climate and Dust Cycle Simulations Isabel2_highmtncami2_4xco2_circ_res and Derivatives

I. Top Level Description

This dataset archives simulations with Community Climate System Model version 3 (CCSM3), including a climate model simulation of an interglacial interval during the Late Paleozoic Ice Age in which the altitude of the Central Pangaean Mountains has been raised to ~5000 m altitude to enable widespread tropical glaciation, cold, and aridity. But pCO2 was raised from 140 ppmv to 560 ppmv and the orbit was adjusted to a circular orbit to allow deglaciation at high latitudes. Dust source apportionment experiments based on this simulation also are archived.

The baseline climate simulation Isabel2_highmtncami2_4xco2_circ_res was run on the cheyenne machine operated by the Computational Information Systems Laboratory (CISL) of the National Center for Atmospheric Research (NCAR) between 20 August 2018 and 8 September 2018. The dust apportionment experiments were run on cheyenne on 30 July 2019.

The baseline climate simulation is a hybrid of Isabel1 archived as DOI: 10.17632/fv54b3gp2w.1.

More complete documentation is included in the top-level README.TXT

References:

Rosenbloom, N., C. Shields, E. Brady, S. Levis, and S. Yeager, 2011, Using CCSM3 for Paleoclimate Applications, National Center for Atmospheric Research (Boulder, CO) Technical Note, NCAR/TN-483+STR.

Acknowledgments:

These simulations made use of CISL-NCAR resources. Their execution and archiving were supported by the National Science Foundation under EAR-1337363.

I. 最高级描述
本数据集汇集了基于社区气候系统模型3（CCSM3）的模拟数据，包括在晚古生代冰河时期间冰期内的气候模型模拟，其中中潘加亚山脉的海拔已被提升至约5000米，以实现广泛的热带冰川、寒冷和干旱。然而，大气中的二氧化碳浓度（pCO2）从140 ppmv上升至560 ppmv，轨道调整为一个圆形轨道，以允许高纬度地区的冰川消退。基于此模拟进行的尘埃源分配实验数据亦被存档。

基准气候模拟Isabel2_highmtncami2_4xco2_circ_res在操作于美国国家大气研究中心（NCAR）计算信息系统实验室（CISL）的Cheyenne机器上于2018年8月20日至2018年9月8日运行。尘埃分配实验于2019年7月30日在Cheyenne上运行。

基准气候模拟为Isabel1的混合体，其存档信息以DOI: 10.17632/fv54b3gp2w.1发布。

更详尽的文档包含在最高级README.TXT文件中。

参考文献：
Rosenbloom, N., C. Shields, E. Brady, S. Levis, and S. Yeager, 2011, 使用CCSM3进行古气候应用，国家大气研究中心（科罗拉多州博尔德）技术报告，NCAR/TN-483+STR。

致谢：
这些模拟数据利用了CISL-NCAR的资源。其运行与存档得到了国家科学基金会（NSF）的资助，资助编号为EAR-1337363。