气候变化领域集成服务门户(CCPortal): Tuning the MPI-ESM1.2 Global Climate Model to Improve the Match With Instrumental Record Warming by Lowering Its Climate Sensitivity

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DOI	10.1029/2019MS002037
	Tuning the MPI-ESM1.2 Global Climate Model to Improve the Match With Instrumental Record Warming by Lowering Its Climate Sensitivity
	Mauritsen T.; Roeckner E.
发表日期	2020
ISSN	19422466
卷号	12 期号:5
英文摘要	A climate model's ability to reproduce observed historical warming is sometimes viewed as a measure of quality. Yet, for practical reasons it cannot be considered a purely empirical result of the modeling efforts because the desired result is known in advance and so is a potential target of tuning. Here we report how the latest edition of the Max Planck Institute for Meteorology Earth System Models (MPI-ESM1.2) atmospheric component (ECHAM6.3) had its sensitivity systematically tuned in order to improve the modeled match with the instrumental record. In practice, this was done by targeting an equilibrium climate sensitivity of about 3 K, slightly lower than in the previous model generation (MPI-ESM), which warmed more than observed, and in particular by addressing a climate sensitivity of about 7 K in an intermediate version of the model. In the process we identified several controls on cloud feedback, some of which confirm recently proposed hypotheses. We find the model exhibits excellent fidelity with the observed centennial global warming. We further find that an alternative approach with high climate sensitivity compensated by strong aerosol cooling instead would yield colder than observed results in the second half of the twentieth century. ©2020. The Authors.
英文关键词	Climate; Modeling; Tuning
语种	英语
scopus关键词	Global warming; Atmospheric components; Climate sensitivity; Earth system model; Global climate model; Max Planck Institute; Model generation; Potential targets; Twentieth century; Climate models; aerosol; climate modeling; global warming; hypothesis testing; sensitivity analysis; twentieth century
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156709
作者单位	Department of Meteorology, Stockholm University, Stockholm, Sweden; Max Planck Institute for Meteorology, Hamburg, Germany
推荐引用方式 GB/T 7714	Mauritsen T.,Roeckner E.. Tuning the MPI-ESM1.2 Global Climate Model to Improve the Match With Instrumental Record Warming by Lowering Its Climate Sensitivity[J],2020,12(5).
APA	Mauritsen T.,&Roeckner E..(2020).Tuning the MPI-ESM1.2 Global Climate Model to Improve the Match With Instrumental Record Warming by Lowering Its Climate Sensitivity.Journal of Advances in Modeling Earth Systems,12(5).
MLA	Mauritsen T.,et al."Tuning the MPI-ESM1.2 Global Climate Model to Improve the Match With Instrumental Record Warming by Lowering Its Climate Sensitivity".Journal of Advances in Modeling Earth Systems 12.5(2020).