Chapter 7 of the Working Group I Contribution to the IPCC Sixth Assessment Report - data for Figure 7.19 (v20220721)

Data for Figure 7.19 from Chapter 7 of the Working Group I (WGI) Contribution to the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report (AR6). Figure 7.19 shows global mean temperature anomaly in models and observations from five time periods. --------------------------------------------------- How to cite this dataset --------------------------------------------------- When citing this dataset, please include both the data citation below (under 'Citable as') and the following citation for the report component from which the figure originates: Forster, P., T. Storelvmo, K. Armour, W. Collins, J.-L. Dufresne, D. Frame, D.J. Lunt, T. Mauritsen, M.D. Palmer, M. Watanabe, M. Wild, and H. Zhang, 2021: The Earth’s Energy Budget, Climate Feedbacks, and Climate Sensitivity. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 923–1054, doi:10.1017/9781009157896.009. --------------------------------------------------- Figure subpanels --------------------------------------------------- The figure has 5 subpanels, with data provided for panels a-e. --------------------------------------------------- List of data provided --------------------------------------------------- This dataset contains: - Global mean temperature anomaly in: (a) Historical (CMIP6 models); (b) post-1975 (CMIP6 models); (c) Last Glacial Maximum (LGM; Cross-Chapter Box 2.1; PMIP4 models; Kageyama et al., 2021; Zhu et al., 2021); (d) mid-Pliocene Warm Period (MPWP; Cross-Chapter Box 2.4; PlioMIP models; Haywood et al., 2020; Zhang et al., 2021); (e) Early Eocene Climatic Optimum (EECO; Cross-Chapter Box 2.1; DeepMIP models; Zhu et al., 2020; Lunt et al., 2021). Grey circles show models with ECS in the assessed very likely range; models in red have an ECS greater than the assessed very likely range (>5°C); models in blue have an ECS lower than the assessed very likely range (<2°C). Black ranges show the assessed temperature anomaly derived from observations (Section 2.3). The historical anomaly in models and observations is calculated as the difference between 2005–2014 and 1850–1900, and the post-1975 anomaly is calculated as the difference between 2005–2014 and 1975–1984. For the LGM, MPWP and EECO, temperature anomalies are compared with pre-industrial (equivalent to CMIP6 simulation ‘piControl’). All model simulations of the MPWP and LGM were carried out with atmospheric CO2 concentrations of 400 and 190 ppm respectively. However, CO2 during the EECO is relatively more uncertain, and model simulations were carried out at either 1120ppm or 1680 ppm (except for the one high-ECS EECO simulation which was carried out at 840 ppm; Zhu et al., 2020). The one low-ECS EECO simulation was carried out at 1680 ppm. Further details on data sources and processing are available in the chapter data table (Table 7.SM.14). ECS stands for Equilibrium Climate Sensitivity. --------------------------------------------------- Data provided in relation to figure --------------------------------------------------- Data provided in relation to Figure 7.19: - Data file: Figure7_19_mod.csv - Data file: Figure7_19_obs.csv --------------------------------------------------- Notes on reproducing the figure from the provided data --------------------------------------------------- The data provided is the output data of the figure which can be used to reproduce the figure. Link to the plotting script for reproducing this figure 'ipcc_figure_7.19.ipynb' can be found in the Related Documents section of this catalogue record. The original script for plotting this figure can be found in the Chapter 7 GitHub repository also linked but requires IDL. --------------------------------------------------- Sources of additional information --------------------------------------------------- The following weblinks are provided in the Related Documents section of this catalogue record: - Link to the figure on the IPCC AR6 website - Link to the report component containing the figure (Chapter 7) - Link to the Supplementary Material for Chapter 7, which contains details on the input data used in Table 7.SM.1 to 7.SM.7. - Link to the code for Chapter 7, archived on Zenodo - Link to scripts used to reproduce figure from data - Link to the Chapter 7 GitHub repository

本数据集为政府间气候变化专门委员会（IPCC）第六次评估报告（AR6）第一工作组（WGI）贡献章节第七章中图7.19的配套数据。图7.19展示了五个时段下，各类气候模型与观测资料中的全球平均温度距平。
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引用本数据集时，需同时包含下方的数据集引用标注（「可引用标识」项下）以及该图表所属报告章节的如下引用文献：
Forster, P., T. Storelvmo, K. Armour, W. Collins, J.-L. Dufresne, D. Frame, D.J. Lunt, T. Mauritsen, M.D. Palmer, M. Watanabe, M. Wild, and H. Zhang, 2021: The Earth’s Energy Budget, Climate Feedbacks, and Climate Sensitivity. In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 923–1054, doi:10.1017/9781009157896.009.
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本图共包含5个子面板，a至e各面板均配套提供对应数据。
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本数据集包含以下全球平均温度距平数据：
(a) 历史时段（耦合模式比较计划第六阶段（CMIP6）模型结果）；
(b) 1975年后时段（CMIP6模型结果）；
(c) 末次冰盛期（LGM；跨章专栏2.1；古气候模式比较计划第四阶段（PMIP4）模型结果；Kageyama等，2021；Zhu等，2021）；
(d) 上新世中期暖期（MPWP；跨章专栏2.4；上新世模式比较计划（PlioMIP）模型结果；Haywood等，2020；Zhang等，2021）；
(e) 始新世早期气候适宜期（EECO；跨章专栏2.1；深部古气候模式比较计划（DeepMIP）模型结果；Zhu等，2020；Lunt等，2021）。

灰色圆点代表平衡气候敏感度（Equilibrium Climate Sensitivity, ECS）处于评估极可信区间内的模型；红色模型的ECS高于评估极可信区间（>5℃）；蓝色模型的ECS低于评估极可信区间（<2℃）。黑色误差范围代表基于观测资料推导的评估温度距平（详见2.3节）。

模型与观测的历史时段温度距平以2005–2014年平均值与1850–1900年平均值的差值计算；1975年后时段的温度距平以2005–2014年平均值与1975–1984年平均值的差值计算。针对LGM、MPWP与EECO时段，温度距平均以工业化前时段（对应CMIP6模拟'piControl'）为参照基准。

所有MPWP与LGM的模式模拟分别采用400 ppm与190 ppm的大气CO₂浓度。不过EECO时期的CO₂浓度不确定性较高，相关模式模拟分别采用1120 ppm或1680 ppm的CO₂浓度（仅1个高ECS的EECO模拟采用840 ppm浓度；Zhu等，2020）；1个低ECS的EECO模拟采用1680 ppm浓度。关于数据来源与处理的更多细节，可查阅本章数据表（表7.SM.14）。
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本数据集针对图7.19提供以下数据文件：
- Figure7_19_mod.csv
- Figure7_19_obs.csv
--------------------------------------------------- 基于本数据集复现原图的说明 ---------------------------------------------------
本数据集提供的是可用于复现该图的输出数据。可用于复现该图的绘图脚本`ipcc_figure_7.19.ipynb`的链接可在本目录记录的「相关文档」板块中获取。本图的原始绘图脚本可在第七章GitHub仓库中找到，但需使用交互式数据语言（Interactive Data Language, IDL）运行。
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本目录记录的「相关文档」板块提供以下网页链接：
- IPCC AR6官网的该图链接
- 包含该图的第七章报告章节链接
- 第七章补充材料链接，其中包含表7.SM.1至7.SM.7所用输入数据的详细信息
- 存档于Zenodo的第七章代码链接
- 用于基于数据复现该图的脚本链接
- 第七章GitHub仓库链接