CESM Large Ensemble with Different Pinatubo Forcings

We reran a 36 year (1990 - 2025) segment of the 29 CESM Large Ensemble members with the proper ocean biogeochemistry configuration using two different options for volcanic forcings:1. Control: we use the same forcing as the original Large Ensemble, but these members were run on Cheyenne instead of Yellowstone (this avoids determining what differences in our experiment are due to changes in the forcing vs changes in the compiler and hardware).2. No Pinatubo: The volcanic aerosol mass mixing ratio from 1991 through 1995 is replaced with the five year segment from 1986 to 1990.

本研究针对29个社区地球系统模型（Community Earth System Model，CESM）大集合成员的1990—2025年共36年时段，采用标准海洋生物地球化学配置，通过两种不同的火山强迫方案开展重模拟试验：1. 对照试验：本试验采用与原始大集合完全一致的强迫场，但模拟运行平台更换为夏延（Cheyenne）超级计算机，而非原试验所用的黄石（Yellowstone）超级计算机。此举可避免无法区分本试验中出现的差异究竟源于强迫场变化，还是编译器与硬件的改动。2. 无皮纳图博火山试验：将1991年至1995年的火山气溶胶质量混合比数据替换为1986年至1990年的五年时段数据。