Emphasis on Climate Science Conclusions and Data Available Online:
IPCC, 2021: AR6 Climate Change 2021: The Physical Science Basis, WG1 Summary for Policy-Makers.
https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_SPM.pdf
IPCC, 2022: AR6 Climate Change 2022: Impacts, Adaptation and Vulnerability, WGII Summary for Policy-Makers.
https://www.ipcc.ch/report/ar6/wg2/downloads/report/IPCC_AR6_WGII_SummaryForPolicymakers.pdf
IPCC, 2022: AR6 Climate Change 2022: Mitigation of Climate Change. WGIII Summary for Policy-Makers.
https://www.ipcc.ch/report/ar6/wg3/downloads/report/IPCC_AR6_WGIII_SummaryForPolicymakers.pdf
IPCC, 2023: AR6 Synthesis Report: Climate Change 2023:
Summary for Policy-Makers.
https://www.ipcc.ch/report/ar6/syr/downloads/report/IPCC_AR6_SYR_SPM.pdf
USGCRP, 2023: The Fifth National Climate Assessment
https://nca5.climate.us/
(Originally hosted at gov’t site nca2023.globalchange.gov , now dissolved. Now hosted at https://nca5.climate.us temporarily)
Trends in Atmospheric Carbon Dioxide and other Greenhouse Gases
NOAA Global Monitoring Laboratory (Daily data since 1958 (CO2))
https://gml.noaa.gov/ccgg/trends/
(Note: Future data may be terminated as of FY2026 budget cycle, dependent upon federal funding. See next entry for alternate source.)
UCSD/SIO “The Keeling Curve“
Same atmospheric CO2 data as NOAA entry above from Mauna Loa lab, hopefully continuing if federal funding is terminated.
keelingcurve.ucsd.edu (Note: graphics extend timeline 1958 back 70 million years with ice core, geological and geochemical data sources.)
NASA Global Climate Change Website:
https://science.nasa.gov/climate-change/
NOAA Climate Website:
https://www.climate.gov/about
(Note: website contains note that it is archived only, will not be updated after June 25, 2025, and some links may no longer work.)
National Snow and Ice Data Center: Arctic/Antarctic Sea Ice News and Analysis (monthly)
https://nsidc.org/sea-ice-today
(Note: website contains note that tools and services have been reduced due to non-renewed funding)
National Academies of Sciences, Engineering, and Medicine Website: Climate at the National Academies.
https://sites.nationalacademies.org/sites/climate/index.htm
Updated November 30, 2025