Appendix 1: AR6 quantification - Data gathering and methods notebook

Appendix 1: AR6 quantification - Data gathering and methods notebook DOI: 10.5281/zenodo.17521819 From: https://github.com/TIBHannover/climate-knowledge-graph/issues/18 Licence: Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode 4th November 2025 Table of Contents Appendix 1: Quantification Notebook..................................................................................................1 Task summary..................................................................................................................................2 1. PDF File Size, Page count, Word count....................................................................................3 Methods.................................................................................................................................3 Findings...................................................................................................................................3 2. PDF Licencing information and DOIs.......................................................................................4 Methods.................................................................................................................................4 Notes......................................................................................................................................4 Summary................................................................................................................................4 Findings...................................................................................................................................4 3. AR6 Citations / references: Bibtex downloads, reference count............................................5 Methods.................................................................................................................................5 Findings...................................................................................................................................5 Sources for estimated reference / citation count per report:................................................5 4. AR6 Authors count..................................................................................................................7 Methods.................................................................................................................................7 5. Wikidata entries of AR6 reports..............................................................................................8 Methods.................................................................................................................................8 Notes......................................................................................................................................8 7. AR6 Figures count...................................................................................................................9 Method...................................................................................................................................9 8. AR6 Data count......................................................................................................................10 World Data Center for Climate (WDCC)...............................................................................10 9. AR6 Glossary count...............................................................................................................11 Method.................................................................................................................................11 10. AR 6 report translations......................................................................................................12 Method.................................................................................................................................12 11. AR6 Acronyms.....................................................................................................................13 Method.................................................................................................................................13 12. AR6 Index terms..................................................................................................................14 Method.................................................................................................................................14 Task summary Collect stats for the 7 main reports ofIPCC Sixth Assessment Report (AR6): • the Synthesis Report (referred to as SYR) • the 3 Working group reports (referred to as WGI, WGII, WGIII) • the 3 Special reports (referred to as SR1.5, SRCCL, SROCC) •Out of scope: the refinement to its latest Methodology Report, "2019 Refinement to the 2006 IPCC Guidelines for National Greenhouse Gas Inventories" 1. PDF File Size, Page count, Word count Methods •File size: from PDF file •Page count: from PDF file (Page numbers + front matter pages with roman page numbers) •Word count: from PDF file, copy and paste into https://wordcounter.net/ "Basic Option", very rough estimate. Counting unreliable because I did not remove irrelevant parts of the documents, sometimes my computer's clipboard was overwhelmed with the amount of data, I also rounded the figures up or down. This definitely needs a cleaner method. Findings Report File name / source File size in MB Approx. page count Approx. word count AR6 Synthesis Report: Climate Change 2023 (SYR) IPCC_AR6_SYR_FullVolume.pdf / https://www.ipcc.ch/report/ar6/s yr/ 4.9 186 + 14 pages ~94.000 Climate Change 2021: The Physical Science Basis (WG1) IPCC_AR6_WGI_FullReport.pdf / https://www.ipcc.ch/report/ar6/ wg1/ 423.3 2409 pages ~1.925.000 Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2) IPCC_AR6_WGII_FullReport.pdf / https://www.ipcc.ch/report/ar6/ wg2/ 396 3068 + 12 pages ~2.513.000 Climate Change 2022: Mitigation of Climate Change (WG3) IPCC_AR6_WGIII_FullReport.pdf / https://www.ipcc.ch/report/ar6/ wg3/ 68.8 2042 + 11 pages ~1.642.000 Special Report: Global Warming of 1.5°C (2018) (SR1.5) SR15_Full_Report_HR.pdf / https://www.ipcc.ch/sr15/ 65 631 pages ~511.000 Special Report: Climate Change and Land (2019) (SRCCL) SRCCL_Full_Report.pdf / https://www.ipcc.ch/srccl/ 44.9 908 pages ~735.000 Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (SROCC) SROCC_FullReport_FINAL.pdf / https://www.ipcc.ch/srocc/ 51.9 766 pages ~627.000 Total 1054.8 MB 10047 pages ~8.047.000 2. PDF Licencing information and DOIs Methods •DOIs: retrieved them from front matter of PDF files; Resolved DOIs via doi.org Notes •No specific licence was found for the SYR, only the general copyright statement on the main IPCC website Summary •AR6 Synthesis Report: Climate Change 2023 (SYR): Copyright https://www.ipcc.ch/copyright/ •3 Working groups reports (WGI, WGII, WGIII): Creative Commons Attribution licence CC-BYNC-ND 4.0 https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en •3 Special reports (SR1.5, SRCCL, SROCC): Creative Commons Attribution licence CC-BY-NCND 4.0 https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en Findings Report DOI full report DOI resolves to licence on landing page SYR 10.59327/IPCC/AR69789291691647 https://www.ipcc.ch/report/ar6/syr/ https:// www.ipcc.ch/ copyright/ WG1 10.1017/9781009157896 https://www.cambridge.org/core/ books/climate-change-2021-thephysical-science-basis/ 415F29233B8BD19FB55F65E3DC67272B Creative Commons Attribution licence CC-BY-NC-ND 4.0 WG2 10.1017/9781009325844 https://www.cambridge.org/core/ books/climate-change-2022-impactsadaptation-and-vulnerability/ 161F238F406D530891AAAE1FC76651BD Creative Commons Attribution licence CC-BY-NC-ND 4.0 WG3 10.1017/9781009157926 https://www.cambridge.org/core/ books/climate-change-2022-mitigationof-climate-change/ 2929481A59B59C57C743A79420A2F9FF Creative Commons Attribution licence CC-BY-NC-ND 4.0 SR1.5 10.1017/9781009157940 https://www.cambridge.org/core/ books/global-warming-of-15c/ D7455D42B4C820E706A03A169B1893FA Creative Commons Attribution licence CC-BY-NC-ND 4.0 SRCCL 10.1017/9781009157988 https://www.cambridge.org/core/ books/climate-change-and-land/ AAB03E2F17650B1FDEA514E3F605A685 Creative Commons Attribution licence CC-BY-NC-ND 4.0 SROCC 10.1017/9781009157964 https://www.cambridge.org/core/ books/ocean-and-cryosphere-in-achanging-climate/ A05E6C9F8638FA7CE1748DE2EB7B491B Creative Commons Attribution licence CC-BY-NC-ND 4.0 3. AR6 Citations / references: Bibtex downloads, reference count Methods •.bib-file count: Manual counting on website, needs revisiting •Citations / references: Looked around for reliable sources Findings Report Download Bibtex files Bibtex file count Reference count SYR https://www.ipcc.ch/report/ar6/syr/, no citations / references in this report? 0 0? WG1 https://www.ipcc.ch/report/ar6/wg1/, "Chapters" > "Downloads" > "Citations (bib)" ~13 .bib files 13.000-18.000, sources for these numbers see below WG2 https://www.ipcc.ch/report/ar6/wg2/, "TS"/"Chapters"/"Cross-Chapter Papers"/"Annexes" > "Downloads" > "Citations (bib)" ~29 .bib files 17.419, sources for these numbers see below WG3 https://www.ipcc.ch/report/ar6/wg3/, "Chapters"/"Annexes" > "Downloads" > "Citations (bib)" ~19 .bib files ? SR1.5 https://www.ipcc.ch/sr15/, I don't seem to be able to find .bib files - 5000-6000, sources for these numbers see below SRCCL https://www.ipcc.ch/srccl/, I don't seem to be able to find .bib files - 7,800, sources for these numbers see below SROCC https://www.ipcc.ch/srocc/, I don't seem to be able to find .bib files - 6,981, sources for these numbers see below Sources for estimated reference / citation count per report: WGI •Wikipedia: https://en.wikipedia.org/wiki/IPCC_Sixth_Assessment_Report#WG1report •The report's authors built on more than 14,000 scientific papers (says Wikipedia) •over 18,000 citations including over 13,000 unique references, Analysis: https://zenodo.org/records/7615825 •13,500 citations (says https://www.carbonbrief.org/guest-post-what-13500-citationsreveal-about-the-ipccs-climate-science-report/) •14,000 references (says https://theconversation.com/234-scientists-read-14-000-researchpapers-to-write-the-ipcc-climate-report-heres-what-you-need-to-know-and-why-its-a-bigdeal-165587) •19,266 distinct reference strings (says https://zenodo.org/records/5475442) WGII •Wikipedia: https://en.wikipedia.org/wiki/IPCC_Sixth_Assessment_Report#Working_Group_2_report_(i mpacts,_adaptation_and_vulnerability) •17,419 DOIs cited (says https://zenodo.org/records/6344388) WGIII •Wikipedia: https://en.wikipedia.org/wiki/IPCC_Sixth_Assessment_Report#Working_Group_3_report_( mitigation_of_climate_change) Special Report: SR1.5 •Wikipedia https://en.wikipedia.org/wiki/Special_Report_on_Global_Warming_of_1.5_%C2%B0C •The report, approved in Incheon, South Korea, includes over 6,000 scientific references, and was prepared by 91 authors from 40 countries (says Wikipedia) •5,099 distinct refence strings (says https://zenodo.org/records/5475442) Special Report: SRCCL •Wikipedia: https://en.wikipedia.org/wiki/Special_Report_on_Climate_Change_and_Land •7,828 distinct refence strings (says https://zenodo.org/records/5475442) Special Report: SROCC •Wikipedia: https://en.wikipedia.org/wiki/Special_Report_on_the_Ocean_and_Cryosphere_in_a_Chan ging_Climate •report includes over 6981 cited references (says https://www.centrescientifique.mc/en/article/the-special-report-on-the-ocean-andcryosphere-in-a-changing-climate-srocc-accepted) •The 1,300-page report by 104 authors and editors representing 36 countries referred to 6,981 publications. (says Wikipedia ) •7,161 distinct reference strings (says https://zenodo.org/records/5475442) 4. AR6 Authors count Methods •I did not actually count the authors - I relied on the number that was given on the landing page •I did not consolidate duplicates, did not check for authors that have worked on more than one report Report Authors landing page Authors count * Authors tables ** SYR https://www.ipcc.ch/report/sixth-assessmentreport-cycle/ "Core writing team" 30 https://apps.ipcc.ch/report/ authors/report.authors.php? q=38&p= WG1 https://www.ipcc.ch/report/ar6/wg1/about/ authors/ 234 https://apps.ipcc.ch/report/ authors/report.authors.php? q=35&p= WG2 https://www.ipcc.ch/report/ar6/wg2/about/ authors 270 https://apps.ipcc.ch/report/ authors/report.authors.php? q=36&p= WG3 https://www.ipcc.ch/report/ar6/wg3/about/ authors 278 https://archive.ipcc.ch/ report/authors/ report.authors.php?q=37&p= (archived website) SR1.5 https://www.ipcc.ch/sr15/authors/ 86 see link on the left SRCCL https://www.ipcc.ch/srccl/authors/ 107 see link on the left SROCC https://www.ipcc.ch/srocc/about/authors/ ~101 https://archive.ipcc.ch/ report/authors/ report.authors.php?q=33&p= (archived website) Total 1106* * As mentioned in the text on the landing page ** Tables with authors' names, origin, gender, affiliation 5. Wikidata entries of AR6 reports Methods •Search in Wikidata for report name Notes •There are also entries for parts of the reports (e.g. the SPM for the SYR) in Wikidata. I have only listed full report entries, though. •Collection in Zotero: https://www.zotero.org/groups/2437020/semanticclimate/collections/773CNPDW