MITcgm numerical model code (with landfast ice parametrization) and output

The numerical model documented here is a regional coupled sea ice - ocean model based on the Massachusetts Institute of Technology General Circulation Model code - MITgcm (for details we refer to: http://mitgcm.org/public/r2_manual/latest/online_documents) with a model domain covering the Arctic Ocean, Nordic Seas and northern North Atlantic. The horizontal resolution is 1/4 degree (approx. 28 km) on a rotated grid with the grid equator passing through the geographical North Pole. The sea ice model is a dynamic-thermodynamic sea-ice model with a viscous-plastic rheology and has a landfast ice parametrization as described by Itkin et al [2015, see bellow], where more details about the model set-up can be found. The model is forced by the atmospheric reanalysis -- The Climate Forecast System Reanalysis from 1979 to 2010 and then from 2011 to 2014 with the NCEP Climate Forecast System Version 2. The model output provided here contains sea ice simulations used by Itkin and Krumpen, [2017, see bellow]. The control run (CTRL) is forced by the CFSR and CSFv2. In the climatological run (CLIM) the May-December fields are replaced by the climatology (1979-2013). On 1. January each year the run is restarted from CTRL. Initial years 1979-1991 are regarded as spin up are not included into the data set here.本文档记述的数值模式为区域耦合海冰-海洋模式，基于麻省理工学院通用环流模型（Massachusetts Institute of Technology General Circulation Model，MITgcm）代码开发（详细信息可参考：http://mitgcm.org/public/r2_manual/latest/online_documents），模式区域覆盖北冰洋、挪威海与北大西洋北部。该模式采用旋转网格，水平分辨率为1/4度（约28千米），其网格赤道穿过地理北极。海冰模块为动力-热力学海冰模式，采用黏塑流变（viscous-plastic rheology）方案，并包含Itkin等人[2015，见下文]所述的固定冰参数化方案，模式配置的更多细节可参阅该文献。模式的大气强迫场采用再分析资料：1979年至2010年使用气候预报系统再分析资料（Climate Forecast System Reanalysis，CFSR），2011年至2014年使用美国国家环境预报中心气候预报系统第2版（NCEP Climate Forecast System Version 2，CFSv2）数据。 本次提供的模式输出包含Itkin与Krumpen[2017，见下文]所使用的海冰模拟结果。对照试验（CTRL）的强迫场为CFSR与CFSv2数据。气候学试验（CLIM）中，5月至12月的场变量将替换为1979年至2013年的气候态数据集。每年1月1日，该试验均从对照试验的结果重新启动。1979年至1991年为模式自旋调整期，未纳入本次数据集。