Global climate model (MIROC4.0) simulations for permafrost dynamics sensitivity to the subsurface and the atmosphere

A set of land-atmosphere coupled global climate model simulations were performed to investigate the sensitivity of the permafrost dynamics and the soil settings to the subsurface hydro-thermal states and to examine the impacts on the hydro-climate above the surface. c5s0 (conventional land process scheme; conventional soil property values; 5-layer 4m soil column; no top organic layers) c5s0o (conventional land process scheme; physically-based soil property values; 5-layer 4m soil column; no top organic layers) p5s0 (partial refinement (no unfrozen water); physically-based soil property values; 5-layer 4m soil column; no top organic layers) r6s1(refined permafrost dynamics; physically-based soil property values; 6-layer 14m soil column; top organic layers) rCs0 (refined permafrost dynamics; physically-based soil property values; 12-layer 100m soil column; no top organic layers) rCs1y (refined permafrost dynamics; physically-based soil property values; 12-layer 100m soil column; top organic layers; different hydraulic parameters) rCs1 (refined permafrost dynamics; physically-based soil property values; 12-layer 100m soil column; top organic layers) The work was partially supported by NSF Grant number ARC-0327664, 0652838. The MIROC GCM was developed by CCSR (Univ. Tokyo), NIES and FRCGC, Japan. Simulations were done at the Arctic Research Supercomputing Center (ARSC).为探究多年冻土动力学与土壤属性对地下热水文状态的敏感性，并评估其对地表上方水文气候的影响，本研究开展了多组陆气耦合全球气候模式（Global Climate Model, GCM）模拟试验。 c5s0（常规陆面过程方案（conventional land process scheme）；常规土壤属性参数值；5层4米土壤柱；无表层有机层） c5s0o（常规陆面过程方案；基于物理过程的土壤属性参数值；5层4米土壤柱；无表层有机层） p5s0（部分优化方案（不含非冻结水）；基于物理过程的土壤属性参数值；5层4米土壤柱；无表层有机层） r6s1（多年冻土动力学优化方案；基于物理过程的土壤属性参数值；6层14米土壤柱；带有表层有机层） rCs0（多年冻土动力学优化方案；基于物理过程的土壤属性参数值；12层100米土壤柱；无表层有机层） rCs1y（多年冻土动力学优化方案；基于物理过程的土壤属性参数值；12层100米土壤柱；带有表层有机层；采用差异化水力参数） rCs1（多年冻土动力学优化方案；基于物理过程的土壤属性参数值；12层100米土壤柱；带有表层有机层） 本研究受美国国家科学基金会（National Science Foundation, NSF）编号ARC-0327664、0652838项目部分资助。MIROC全球气候模式由日本东京大学气候系统研究中心（Center for Climate System Research, CCSR）、日本国立环境研究所（National Institute for Environmental Studies, NIES）与日本全球变化前沿研究中心（Frontier Research Center for Global Change, FRCGC）联合开发。所有模拟试验均在北极研究超级计算中心（Arctic Research Supercomputing Center, ARSC）完成。