The Australian Earth System Model: ACCESS-ESM1.5
The Australian Earth System Model: ACCESS-ESM1.5
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DOI：
10.1071/es19035
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发表时间：
2020-08-24
影响因子：
3.6
通讯作者：
Srbinovsky, Jhan
中科院分区：
文献类型：
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作者：
Ziehn, Tilo;Chamberlain, Matthew A.;Srbinovsky, Jhan
澳大利亚共同体气候和地球系统模拟器（ACCESS）已经扩大，包括陆地和海洋碳循环组成部分，形成一个地球系统模型（ESM）。目前的版本ACCESS-ESM 1.5主要是为了使澳大利亚能够利用ESM版本参加耦合模式相互比较项目第6阶段（CMIP 6）。在这里，我们描述了模型组件和对先前版本ACCESS-ESM 1的更改。我们使用工业化前500年的控制运行来强调物理气候和碳循环的稳定性。长时间的自旋上升、可忽略的温度漂移和小的工业化前净碳通量（陆地和海洋分别为0.02和0.08 PgC年（-1））突出表明ACCESS-ESM 1.5适合于探索气候系统的变率模式和与碳循环的耦合。利用CMIP 6历史模拟，通过与观测和ACCESS-ESM 1的比较，对当今的物理气候和碳循环进行了评估。虽然气候模拟与早期的模式相比变化不大，但碳模拟的许多方面都得到了改进。对CO2强迫的气候响应评估表明，ACCESS-ESM 1.5的平衡气候敏感性为3.87 ℃。
The Australian Community Climate and Earth System Simulator (ACCESS) has been extended to include land and ocean carbon cycle components to form an Earth System Model (ESM). The current version, ACCESS-ESM1.5, has been mainly developed to enable Australia to participate in the Coupled Model Intercomparison Project Phase 6 (CMIP6) with an ESM version. Here we describe the model components and changes to the previous version, ACCESS-ESM1. We use the 500-year pre-industrial control run to highlight the stability of the physical climate and the carbon cycle. The long spin-up, negligible drift in temperature and small pre-industrial net carbon fluxes (0.02 and 0.08 PgC year(-1) for land and ocean respectively) highlight the suitability of ACCESS-ESM1.5 to explore modes of variability in the climate system and coupling to the carbon cycle. The physical climate and carbon cycle for the present day have been evaluated using the CMIP6 historical simulation by comparing against observations and ACCESS-ESM1. Although there is generally little change in the climate simulation from the earlier model, many aspects of the carbon simulation are improved. An assessment of the climate response to CO2 forcing indicates that ACCESS-ESM1.5 has an equilibrium climate sensitivity of 3.87 degrees C.