Knowledge Tree
IPCC
Also known as: Intergovernmental Panel on Climate Change, IPC
Facts (46)
Sources
Isn't there a lot of disagreement among climate scientists about ... climate.gov Feb 3, 2020 9 facts
measurementThe 2021 IPCC report received and responded to more than 78,000 expert and government review comments.
measurementThe 2021 IPCC Sixth Assessment Report was assembled by 751 experts from more than 60 countries and cited more than 14,000 scientific papers.
quoteAn IPCC press release states: "Thousands of people from all over the world contribute to the work of the IPCC. For the assessment reports, IPCC scientists volunteer their time to assess the thousands of scientific papers published each year to provide a comprehensive summary of what is known about the drivers of climate change, its impacts and future risks, and how adaptation and mitigation can reduce those risks."
referenceEach major IPCC assessment report includes three volumes: one on the science, one on impacts, and one on mitigation.
referenceSteven Sherwood wrote 'Trust us, we're climate scientists: The case for the IPCC' in The Conversation in 2011.
claimEvidence of observed changes in climate extremes, such as heatwaves, heavy precipitation, droughts, and tropical cyclones, and their attribution to human influence, has strengthened since the Intergovernmental Panel on Climate Change's previous report.
quoteThe IPCC Sixth Assessment Report Summary for Policymakers states: "It is unequivocal that human influence has warmed the atmosphere, ocean and land. Widespread and rapid changes in the atmosphere, ocean, cryosphere and biosphere have occurred. The scale of recent changes across the climate system as a whole – and the present state of many aspects of the climate system – are unprecedented over many centuries to many thousands of years. Human-induced climate change is already affecting many weather and climate extremes in every region across the globe."
procedureThe IPCC selects authors for its reports through a nomination process involving governments and climate experts, aiming for a diverse mix of authors from developed and developing countries, across genders, and with varying levels of experience.
procedureThe IPCC report creation process involves separate teams of experts reviewing and summarizing relevant research, followed by multiple iterations of expert and government review.
Sustainable Energy Transition for Renewable and Low Carbon Grid ... frontiersin.org Mar 23, 2022 8 facts
referenceBruckner T., Fulton L., Hertwich E., McKinnon A., Perczyk D., and Roy J. published 'Annex III: Technology-specific Cost and Performance Parameters' in 2014 as part of the IPCC Fifth Assessment Report.
claimThe Intergovernmental Panel on Climate Change (IPCC) reported in 2021 that several climate changes are already irreversible, though future mitigation is still possible if action is taken.
claimThe Intergovernmental Panel on Climate Change (IPCC) established a target to stabilize atmospheric carbon concentration at 350 ppm for CO2 while limiting global temperature rise to 2°C above preindustrial levels, a target ratified by many nations globally.
measurementThe Intergovernmental Panel on Climate Change (IPCC) predicted that greenhouse gas emissions will lead to a global temperature increase of between 1.1 and 6.4°C by the end of the 21st Century.
claimThe Intergovernmental Panel on Climate Change (IPCC) recommends reducing greenhouse gas emissions by 50–80% by the year 2050 to mitigate the consequences of global warming.
referenceThe Intergovernmental Panel on Climate Change (IPCC) published 'Climate Change 2007: The Physical Science Basis' as a contribution to the Fourth Assessment Report in 2007.
claimThe Intergovernmental Panel on Climate Change (IPCC) predicted that greenhouse gas emissions will lead to a global temperature increase of between 1.1 and 6.4°C by the end of the 21st Century.
claimManifestations of global climate change include increased average global temperatures, rising sea levels, heat waves, flooding, stronger and more frequent ocean waves, and drought, according to the Intergovernmental Panel on Climate Change (2007) and Butt et al. (2012).
How the “Scientific Consensus” on Global Warming Affects ... heritage.org Oct 26, 2010 7 facts
claimFred Singer published an 800-page report titled "Climate Change Reconsidered," which questions IPCC conclusions and asserts that there is no scientific consensus on climate change.
claimThe EPA relied on the 2007 IPCC report and data from the NCDC to establish its 2009 endangerment finding regarding greenhouse gas emissions.
claimThe IPCC acknowledged overstating crop loss in Africa, the depletion of the Amazon rain forest, sea level increases in the Netherlands, and damage from weather catastrophes in its 2007 report.
measurementWhen the IPCC released its 2007 report, 400 climate experts disputed the findings, a number that has since grown to more than 700 scientists, including current and former IPCC scientists.
claimThe IPCC's assessment of mountain ice reduction in the Andes, Alps, and Africa relied on a magazine article discussing anecdotal evidence from mountain climbers and a student dissertation.
claimRichard Lindzen, a professor of meteorology at the Massachusetts Institute of Technology, asserts that IPCC climate models fail to account for naturally occurring cycles such as El Niño, the Pacific decadal oscillation, and the Atlantic multidecadal oscillation.
claimThe IPCC acknowledged that its claim regarding the probability of Himalayan glaciers melting by 2035 was based on speculation, despite previously labeling the probability as 'very high'.
Scientific consensus on climate change - Wikipedia en.wikipedia.org 5 facts
measurementSurvey respondents favored describing IPCC reports as accurate by a 72% to 20% margin, and rejected the thesis that there is too much uncertainty about global warming to make immediate policy decisions by a 15% to 80% margin.
claimIPCC reports have regularly increased their estimates of future sea level rise in response to newer research on the ice sheets of Greenland and Antarctica.
measurementRegarding the 1990 IPCC estimate of warming at 0.3 °F (0.17 °C) per decade throughout the 21st century, 13 (15%) of the 118 scientists surveyed by the Center for Science, Technology, and Media in 1991 expressed skepticism, 39 (44%) emphasized uncertainty, and 37 (42%) agreed with the estimate.
claimThe IPCC Fifth Assessment Report (Working Group I, Summary for Policymakers) states that the best estimate of the human-induced contribution to warming is similar to the observed warming over the period covered by the report.
measurementIn the 1991 Center for Science, Technology, and Media survey, 52% of respondents thought the rate of warming would likely be lower than the 1990 IPCC estimate, while 8% thought it would be higher.
Nuclear Energy and Climate Change Mitigation everycrsreport.com Apr 1, 2025 3 facts
measurementBased on the GWP values from the IPCC's 2013 Fifth Assessment Report, a ton of methane is 28 times more potent than a ton of carbon dioxide when averaged over a 100-year time frame.
referenceThe unit CO2-equivalent is used to compare greenhouse gases because they vary by global warming potential (GWP), which is an index used by the IPCC and others to measure the heat-trapping ability of different gases over a period of time, typically 100 years.
claimThe U.S. Environmental Protection Agency's (EPA) most recent greenhouse gas inventory (using 2022 data) uses the global warming potential (GWP) values presented in the IPCC's 2013 Fifth Assessment Report to comply with international reporting requirements.
Misleading U.S. Department of Energy climate report chooses bias ... science.feedback.org Aug 5, 2025 2 facts
referenceThe IPCC published a report titled 'Changing Ocean, Marine Ecosystems, and Dependent Communities' in 2022 as part of the Special Report on the Ocean and Cryosphere in a Changing Climate.
referenceThe IPCC published a report titled 'Sea Level Rise and Implications for Low-Lying Islands, Coasts and Communities' in 2019 as part of the Special Report on the Ocean and Cryosphere in a Changing Climate.
Comprehensive Overview on the Present State and Evolution of ... link.springer.com Aug 9, 2024 2 facts
referenceThe IPCC projections for global surface temperature changes up to 2100 include five greenhouse gas emission scenarios: very low (SSP1-1.9), low (SSP1-2.6), medium (SSP2-4.5), high (SSP3-7.0), and very high (SSP5-8.5).
referenceThe IPCC generated projections of future global surface temperature variations relative to 1850–1900 by combining multimodel projections with observational constraints, evaluating equilibrium climate sensitivity and transient climate response.
Clean Energy Solutions Must Include Nuclear | ClearPath clearpath.org 1 fact
referenceThe IPCC 2014 report (Annex III Table A.III.2) provides median estimates for lifecycle greenhouse gas emissions by electricity generation technology.
Department of Energy Issues Report Evaluating Impact of ... energy.gov Jul 30, 2025 1 fact
claimDr. John Christy served as a Lead Author of the 3rd IPCC Assessment Report in 2001.
The Energy Department "Red Team" Critique of Greenhouse-Gas ... revkin.substack.com Jul 31, 2025 1 fact
claimThe Energy Department 'Red Team' report emphasizes data-driven estimates of climate sensitivity in Section 4.3 while downplaying model-based estimates that are widely used in IPCC assessments.
A review of climate change impacts on migration patterns of marine ... frontiersin.org Oct 25, 2024 1 fact
referenceMeredith et al. (2019) authored the "Polar regions" chapter in the IPCC Special Report on the Ocean and Cryosphere in a Changing Climate.
Navigating Tensions in Just Energy Transitions kleinmanenergy.upenn.edu Aug 20, 2025 1 fact
quoteThe IPCC defines a just transition as 'a set of principles, processes and practices that aim to ensure that no people, workers, places, sectors, countries or regions are left behind in the transition from a high-carbon to a low-carbon economy' (Pathak et al., 2022).
Global perspectives on energy technology assessment and ... link.springer.com Oct 30, 2025 1 fact
claimGlobal knowledge-sharing organizations, such as the Global Energy Interconnection Development and Cooperation Organization (GEIDCO) and the Intergovernmental Panel on Climate Change (IPCC), facilitate the spread of technology advancements and best practices.
Basic Electronic Components | Sierra Circuits protoexpress.com 1 fact
measurementThe IPC standard for common passive SMT package codes defines dimensions for various package types, including the 2920 package (7.4 x 5.1 mm), 2512 package (6.3 x 3.2 mm), 1206 package (3.0 x 1.5 mm), 402 package (1.0 x 0.5 mm), and 201 package (0.6 x 0.3 mm).
Greater than 99% consensus on human caused climate change in ... iopscience.iop.org Oct 19, 2021 1 fact
quoteThe IPCC AR5 report states: 'it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century'.
An integrated climate-biodiversity framework to improve planning ... ecologyandsociety.org 1 fact
claimThe Integrated Climate-Biodiversity Framework (ICBF) aligns policy and planning with climate change and biodiversity objectives, which are identified as critical sustainability issues by Rockström et al. (2009), Steffen et al. (2015), the IPCC (2018), and the IPBES (2019).
Health and environmental impacts of diets worldwide globalnutritionreport.org 1 fact
referenceThe Intergovernmental Panel on Climate Change (IPCC) published a special report in 2019 titled 'Climate Change and Land' covering climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems.