Ocean and atmosphere output of the Bergen Climate Model experiment TB1

550 ppm stabilization experiment (SRES B1) prepared for the IPCC Fourth Assessment Report. BCM2.0, (2005): atmosphere: ARPEGE V3 T63L31 (cy 22b+); ocean: NERSC-MICOM V1.0 (based on MICOM V2.8), 35 vertical layers, 1.5(E-W) X 0.5(N-S) deg. res. near equator with gradual transformation to square grid cells away from equator; sea ice: NERSC Sea Ice Model (Viscous-plastic + thermodynamic), 4 gridcells per ocean grid cell; land: ISBA ARPEGE V3 version. Experiment was initiated from model year 85 (nominal year 1850) of the control simulation (with bcm_experiment_name: PC3). The time varying forcing agents were varied based upon observations and reconstructions for the late 19th and 20th centuries. Varying forcing agents: CO2,CH4,N2O, CFC11(including other CFCs and HFCs),CFC12 and sulfate aerosols (Boucher data, only direct effect). Non-varying forcing agents: Background aerosols: black carbon, sea salt, desert dust, stratospheric and tropospheric ozone, solar irradiance (1368 W/m2) and the distribution of land cover types. No volcanic aerosols. No heat or fresh water adjustments.

为政府间气候变化专门委员会（Intergovernmental Panel on Climate Change, IPCC）第四次评估报告筹备的550 ppm浓度稳定化试验（SRES B1情景），采用BCM2.0（2005年版本）：大气模块采用ARPEGE V3 T63L31（cy 22b+版本）；海洋模块采用NERSC-MICOM V1.0（基于MICOM V2.8开发），包含35个垂直层，赤道附近分辨率为1.5（东-西向）×0.5（北-南向）经纬度，远离赤道区域逐渐转换为正方形网格单元；海冰模块采用NERSC海冰模型（黏塑性+热力学模型），每个海洋网格单元对应4个海冰网格单元；陆面模块采用ISBA ARPEGE V3版本。本试验从对照模拟的第85个模型年（对应名义年份1850年）启动，对照模拟的模型试验名称为PC3。19世纪末至20世纪的时变气候强迫因子基于观测数据与重建结果进行调整，时变强迫因子包括：CO₂、CH₄、N₂O、CFC11（包含其他氟氯化碳与氢氟烃）、CFC12以及硫酸盐气溶胶（采用Boucher数据集，仅考虑直接辐射效应）。非时变强迫因子包括：本底气溶胶（黑碳、海盐、沙漠粉尘）、平流层与对流层臭氧、太阳辐照度（1368 W/m²）以及土地覆盖类型分布。本试验未考虑火山气溶胶影响，亦未进行热量或淡水调整。