5 million year transient Antarctic ice sheet model run with "sensitized" marine ice margin instabilities

This dataset is a NetCDF file containing the results of a 5 MA ice sheet model run with parameter settings intended to enhance marine ice sheet instability processes. Uses the Penn State ice sheet model as described in DeConto et al. (2021) and Pollard & DeConto (2012). The model runs from 5 Ma to present and snapshots are recorded every 2000 years. Model grid resolution is 40 km. Only the model geometry (thickness, height, whether grounded) is saved in each snapshot. The purpose of the model run was to support a study into whether or not it is possible to distinguish models with different marine ice sheet instability parameterizations using geologic data.

本数据集为网络通用数据格式（NetCDF）文件，包含一项时长5百万年（Ma）的冰盖模型模拟结果，该模拟的参数设置旨在强化海洋冰盖不稳定性（marine ice sheet instability）过程。本模拟采用宾夕法尼亚州立大学（Penn State）冰盖模型，相关模型细节参见DeConto等人（2021）与Pollard及DeConto（2012）的研究。模拟时段设定为5百万年前至现代，每2000年存储一次模型快照。模型网格分辨率为40千米，每次快照仅保存模型几何形态信息，包括冰盖厚度、高程以及冰体是否接地的状态。本次模拟的目的是支撑一项研究课题，旨在探讨能否利用地质数据区分采用不同海洋冰盖不稳定性参数化方案的冰盖模型。