AR6 Reports Stats

[oldenbourglaura]

Task

Collect stats for the 7 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)

Stats to collect

• PDF Page count, Word count
• PDF Licencing information and DOIs
• AR6 Citations / references: Bibtex downloads, reference count
• AR6 Authors count
• Wikidata entries of AR6 reports
• AR6 Figures count
• AR6 Data count
• AR6 Glossary count
• AR 6 report translations
• AR6 Acronyms
• AR6 Index terms

[oldenbourglaura]

PDF Page count, Word count

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/syr/	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

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 amout of data, I also rounded the figures up or down. This definitely needs a cleaner method.

[oldenbourglaura]

PDF Licencing information and DOIs

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-BY-NC-ND 4.0
• 3 Special reports (SR1.5, SRCCL, SROCC): Creative Commons Attribution licence CC-BY-NC-ND 4.0

Details

Report	DOI full report	DOI resolves to	licence on landing page
AR6 Synthesis Report: Climate Change 2023 (SYR)	10.59327/IPCC/AR6-9789291691647	https://www.ipcc.ch/report/ar6/syr/	https://www.ipcc.ch/copyright/
Climate Change 2021: The Physical Science Basis (WG1)	10.1017/9781009157896	https://www.cambridge.org/core/books/climate-change-2021-the-physical-science-basis/415F29233B8BD19FB55F65E3DC67272B	Creative Commons Attribution licence CC-BY-NC-ND 4.0
Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2)	10.1017/9781009325844	https://www.cambridge.org/core/books/climate-change-2022-impacts-adaptation-and-vulnerability/161F238F406D530891AAAE1FC76651BD	Creative Commons Attribution licence CC-BY-NC-ND 4.0
Climate Change 2022: Mitigation of Climate Change (WG3)	10.1017/9781009157926	https://www.cambridge.org/core/books/climate-change-2022-mitigation-of-climate-change/2929481A59B59C57C743A79420A2F9FF	Creative Commons Attribution licence CC-BY-NC-ND 4.0
Special Report: Global Warming of 1.5°C (2018) (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
Special Report: Climate Change and Land (2019) (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
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (SROCC)	10.1017/9781009157964	https://www.cambridge.org/core/books/ocean-and-cryosphere-in-a-changing-climate/A05E6C9F8638FA7CE1748DE2EB7B491B	Creative Commons Attribution licence CC-BY-NC-ND 4.0

Methods

• DOIs: retreived them from front matter of PDF files
• Resolved DOIs via doi.org

Notes

• I could not find a specific licence for the SYR, only the general copyrighht statement on the main IPCC website

[oldenbourglaura]

AR6 Citations / references: Bibtex downloads, reference count

Report	Download Bibtex files	Bibtex file count	Reference count
AR6 Synthesis Report: Climate Change 2023 (SYR)	https://www.ipcc.ch/report/ar6/syr/, no citations / references in this report?	0	0?
Climate Change 2021: The Physical Science Basis (WGI)	https://www.ipcc.ch/report/ar6/wg1/, "Chapters" > "Downloads" > "Citations (bib)"	~13 .bib files	13.000-18.000, sources for these numbers see below
Climate Change 2022: Impacts, Adaptation and Vulnerability (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
Climate Change 2022: Mitigation of Climate Change (WG3)	https://www.ipcc.ch/report/ar6/wg3/, "Chapters"/"Annexes" > "Downloads" > "Citations (bib)"	~19 .bib files	?
Special Report: Global Warming of 1.5°C (2018) (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
Special Report: Climate Change and Land (2019) (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
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (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

Methods

• .bib-file count: Manual counting on website, needs revisiting
• Citations / references: Looked around for reliable sources

Sources for estimated reference / citation count per report:

Collection on Zotero: https://www.zotero.org/groups/2437020/semanticclimate/collections/LJKWTTYZ

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-citations-reveal-about-the-ipccs-climate-science-report/)
• 14,000 references (says https://theconversation.com/234-scientists-read-14-000-research-papers-to-write-the-ipcc-climate-report-heres-what-you-need-to-know-and-why-its-a-big-deal-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_(impacts,_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_Changing_Climate
• report includes over 6981 cited references (says https://www.centrescientifique.mc/en/article/the-special-report-on-the-ocean-and-cryosphere-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 refence strings (says https://zenodo.org/records/5475442)

[oldenbourglaura]

AR6 Authors count

Report	Authors landing page	Authors count *	Authors tables **
AR6 Synthesis Report: Climate Change 2023 (SYR)	https://www.ipcc.ch/report/sixth-assessment-report-cycle/ "Core writing team"	30	https://apps.ipcc.ch/report/authors/report.authors.php?q=38&p=
Climate Change 2021: The Physical Science Basis (WGI)	https://www.ipcc.ch/report/ar6/wg1/about/authors/	234	https://apps.ipcc.ch/report/authors/report.authors.php?q=35&p=
Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2)	https://www.ipcc.ch/report/ar6/wg2/about/authors	270	https://apps.ipcc.ch/report/authors/report.authors.php?q=36&p=
Climate Change 2022: Mitigation of Climate Change (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)
Special Report: Global Warming of 1.5°C (2018) (SR1.5)	https://www.ipcc.ch/sr15/authors/	86	see link on the left
Special Report: Climate Change and Land (2019)(SRCCL)	https://www.ipcc.ch/srccl/authors/	107	see link on the left
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (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

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

[oldenbourglaura]

Wikidata entries of AR6 reports

Collection in Zotero: https://www.zotero.org/groups/2437020/semanticclimate/collections/773CNPDW

Report	Wikidata entry	Wikidata identifyer	Scholia	Resonator	Squid
IPCC Sixth Assessment Report	https://www.wikidata.org/wiki/Q103843442	Q103843442	https://scholia.toolforge.org/topic/Q103843442	https://reasonator.toolforge.org/?q=Q103843442	https://sqid.toolforge.org/#/view?id=Q103843442
AR6 Synthesis Report: Climate Change 2023 (SYR)	https://www.wikidata.org/wiki/Q117820486	Q117820486	https://scholia.toolforge.org/topic/Q117820486
Climate Change 2021: The Physical Science Basis (WG1)	https://www.wikidata.org/wiki/Q108133155	Q108133155	https://scholia.toolforge.org/topic/Q108133155
Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2)	https://www.wikidata.org/wiki/Q124454848 and https://www.wikidata.org/wiki/Q111109497	Q124454848, Q111109497	https://scholia.toolforge.org/topic/Q124454848 https://scholia.toolforge.org/topic/Q111109497
Climate Change 2022: Mitigation of Climate Change (WG3)	https://www.wikidata.org/wiki/Q123285197 and https://www.wikidata.org/wiki/Q111489232	Q123285197, Q111489232	https://scholia.toolforge.org/topic/Q123285197 https://scholia.toolforge.org/topic/Q111489232
Special Report: Global Warming of 1.5°C (2018) (SR1.5)	https://www.wikidata.org/wiki/Q57077013 and https://www.wikidata.org/wiki/Q123675901	Q57077013, Q123675901	https://scholia.toolforge.org/topic/Q57077013 https://scholia.toolforge.org/topic/Q123675901
Special Report: Climate Change and Land (2019) (SRCCL)	https://www.wikidata.org/wiki/Q66310618 and https://www.wikidata.org/wiki/Q114750129	Q66310618, Q114750129	https://scholia.toolforge.org/topic/Q66310618 https://scholia.toolforge.org/topic/Q114750129
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (SROCC)	https://www.wikidata.org/wiki/Q67028624 and https://www.wikidata.org/wiki/Q114204629	Q67028624, Q114204629	https://scholia.toolforge.org/topic/Q67028624 https://scholia.toolforge.org/topic/Q114204629

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.

[oldenbourglaura]

AR6 Figures count

Report	Landing page for figures	Figures count
AR6 Synthesis Report: Climate Change 2023	https://www.ipcc.ch/report/ar6/syr/figures	28
Climate Change 2021: The Physical Science Basis (WGI)	https://www.ipcc.ch/report/ar6/wg1/figures	~511
Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2)	https://www.ipcc.ch/report/ar6/wg2/figures	~469
WGIII: Climate Change 2022: Mitigation of Climate Change (WG3)	https://www.ipcc.ch/report/ar6/wg3/figures	~354
Special Report: Global Warming of 1.5°C (2018) (SR1.5)	https://www.ipcc.ch/sr15/graphics/#cid_6333	~89
Special Report: Climate Change and Land (2019) (SRCCL)	Individual links off https://www.ipcc.ch/srccl/, I have not found a figures repository yet	~132
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (SROCC)	Individual links off https://www.ipcc.ch/srocc/, I have not found a figures repository yet	~89
Total		~1672

Method

• Manually scanned and counted overview pages on the IPCC website, unreliable numbers, need to be double-checked

[oldenbourglaura]

AR6 Data count

No actual counting here, only some links:

World Data Center for Climate (WDCC)

• https://www.wdc-climate.de/ui/q?general_key_ss=IPCC-AR6

On the IPCC website:

Available Data for AR6

• https://ipcc-data.org/ar6landing.html

IPCC Data browser

• https://ipcc-browser.ipcc-data.org/browser/search?searchterm=ar6
• https://ipcc-browser.ipcc-data.org/browser/search?keywords=IPCC-AR6
• https://ipcc-browser.ipcc-data.org/browser/search?keywords=AR6

Data and Code access (incomplete)

WG1: https://www.ipcc.ch/report/ar6/wg1/resources/data-access/

[oldenbourglaura]

AR6 Glossary count

Glossary repository on IPCC website

• "You are viewing definitions of terms from the reports: AR6" https://apps.ipcc.ch/glossary/
• ca. 925 Terms in total

Method

• Each PDF contains a 'glossary' section
• I did not count them individually, but looked at the general glossary repository on IPCC website for a total number

[oldenbourglaura]

AR 6 report translations

Report	Landing page for translations	Translations count UN lang	Other lang
AR6 Synthesis Report: Climate Change 2023	https://www.ipcc.ch/report/ar6/syr/resources/translations/	5 in preparation	2 x SPM
Climate Change 2021: The Physical Science Basis (WGI)	https://www.ipcc.ch/report/ar6/wg1/resources/translations/	5	2, partial
Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2)	https://www.ipcc.ch/report/ar6/wg2/resources/translations/	5	3 x SPM
Climate Change 2022: Mitigation of Climate Change (WG3)	https://www.ipcc.ch/report/ar6/wg3/resources/translations/	5	1 x SPM
Special Report: Global Warming of 1.5°C (2018) (SR1.5)	Some translations here https://www.ipcc.ch/sr15/download/, "UN and other languages"	5	4 x SPM
Special Report: Climate Change and Land (2019) (SRCCL)	Some translations here https://www.ipcc.ch/srccl/download/ , "SPM in UN Languages", "SPM in other languages"	5 x SPM	3 x SPM
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (SROCC)	Some translations here https://www.ipcc.ch/srocc/download/, "UN and other languages"	5 x SPM	5 x SPM

Method

• Manually counting available translation files on website
• It's not always clear what is translated and what isn't
• Sometimes translations are accounced, but to ready
• Numbers unreliable, need to be double-checked

[oldenbourglaura]

AR6 Acronyms

Report	available as HTML	Acronym count
AR6 Synthesis Report: Climate Change 2023	https://www.ipcc.ch/report/ar6/syr/annexes-and-index/#annex-ii	-90
Climate Change 2021: The Physical Science Basis (WGI)		~521
Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2)	https://www.ipcc.ch/report/ar6/wg2/chapter/annex-iii/	~692
Climate Change 2022: Mitigation of Climate Change (WG3)		~548
Special Report: Global Warming of 1.5°C (2018) (SR1.5)		~566
Special Report: Climate Change and Land (2019) (SRCCL)		~430
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (SROCC)		~194

Method

• These numbers are estimates, I copied the lists from the PDFs and then manually corrected line breaks. This is not 100% accurate, and needs to be automated somehow

Text files copied from PDFs

syr-acronyms.txt

wg1-acronyms.txt

wg2-acronyms.txt

wg3-acronyms.txt

SR15-acronyms.txt

SRCCL-acronyms.txt

SROCC-acronyms.txt

[oldenbourglaura]

AR6 Index terms

Report	Index count
AR6 Synthesis Report: Climate Change 2023	~227
Climate Change 2021: The Physical Science Basis (WGI)	~1138
Climate Change 2022: Impacts, Adaptation and Vulnerability (WG2)	~1054
Climate Change 2022: Mitigation of Climate Change (WG3)	~1005
Special Report: Global Warming of 1.5°C (2018) (SR1.5)	~526
Special Report: Climate Change and Land (2019) (SRCCL)	-1036
Special Report: The Ocean and Cryosphere in a Changing Climate (2019) (SROCC)	~477

Method

• These numbers are very rough estimates, I counted/estimated them from the PDFs manually. This is BY FAR not 100% accurate, and definitely needs to be automated somehow
• I have only counted the main (bold) terms, there is a lot of subterms, sometimes hundreds of subterm for a main term