CAS FGOALS-f3-H and CAS FGOALS-f3-L outputs for the high-resolution model intercomparison project simulation of CMIP6

ABSTRACT

The High Resolution Model Intercomparison Project (HighResMIP) is a unique model intercomparison project in phase 6 of the Coupled Model Intercomparison Project (CMIP6), which is focused on the impact of horizontal resolutions. The outputs of the high- and low-resolution versions of CAS FGOALS-f3-H and CAS FGOALS-f3-L for the experiments of the HighResMIP simulations in CMIP6 are described in this paper. The models and their configurations, experimental settings, and post-processing methods are all introduced. CAS FGOALS-f3-H, with a 0.25° horizontal resolution, and CAS FGOALS-f3-L, with a 1° horizontal resolution, were forced by the standard external conditions, and two coordinated sets of simulations were conducted for 1950–2014 and 2015–50 with the Experiment IDs of ‘highresSST-present’ and ‘highresSST-future’, respectively. The model outputs contain multiple time scales including the required hourly mean, three-hourly mean, six-hourly transient, daily mean, and monthly mean datasets. It is reported that the 0.25° CAS FGOALS-f3-H successfully simulates some of the key challenges in climate modeling, including the average lifetime of tropical cyclones, particularly in the western parts of the northern Pacific Ocean, and the diurnal cycle of hourly precipitation. These datasets will contribute to the benchmarking of current models for CMIP, and studies of the impacts of horizontal resolutions on climate modeling issues.

GRAPHICAL ABSTRACT

摘要

高分辨率模式比较计划 (HighResMIP) 是CMIP6中新增的模式间比较计划, 旨在关注水平分辨率对气候模拟的影响。本文介绍了中国科学院大气物理研究所全球25km FGOALS-f3-H和100km FGOALS-f3-L模式的基本信息, 以及参与HighResMIP的试验设计, 强迫数据, 数据后处理方法等信息。水平分辨率25km的 FGOALS-f3-H模式和100km FGOALS-f3-L模式由标准外强迫场驱动, 且分别在1950–2014和2015–50时段进行两组协同试验, 试验编号分别为‘highresSST-present’ 及‘highresSST-future’。模拟和预估数据集包含多种输出频率: 1小时平均, 3小时平均, 6小时瞬时, 日平均和月平均等。评估结果表明: 水平分辨率的提高能够显著改进模式在热带气旋、日变化和极端降水的模拟性能。相较于全球100km低分辨率的FGOALS-f3-L, 全球25km的FGOALS-f3-H能够更好的刻画热带气旋的生命周期和全球降水的日变化主要特征, 特别是能够准确再现亚洲夏季风的降水日变化峰值时间。该数据集的发布将大大促进水平分辨率对气候模拟和预估影响的相关研究。

KEYWORDS:

• CMIP6
• HighResMIP
• FGOALS-f3-H
• FGOALS-f3-L
• tropical cyclone
• diurnal cycle
• hourly precipitation

关键词:

• CMIP6
• HighResMIP
• FGOALS-f3-H
• FGOALS-f3-L
• 热带气旋
• 降水日变化
• 小时降水

Data availability statement

The data that support the findings of this study are available from the following sources: https://esgf-node.llnl.gov/projects/cmip6/.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The research presented in this paper was jointly funded by the Strategic Priority Research Program of Chinese Academy of Sciences [grant number XDB40030205] and the National Natural Science Foundation of China [grant numbers 91737306, 41675100, and U1811464].