Knowledge Tree
climate modeling
Also known as: climate models, climate model, climate model predictions, climate model projections, climate modeling
Facts (38)
Sources
ESS Subtopic 6.2: Climate change – Causes and Impacts mrgscience.com 13 facts
procedureHindcasting is a method for testing the accuracy of climate models that involves running a model backward from the present time to simulate past climate conditions and comparing the model’s predictions to actual historical data.
claimClimate models predict that if radiative forcing continues to rise at current rates, the Earth will experience an additional 0.5°C to 1°C of warming by mid-century.
claimClimate models indicate that Earth's systems may reach critical thresholds or tipping points, where small changes trigger rapid and often irreversible shifts in the climate system, leading to a new equilibrium.
procedureTo perform a hindcasting experiment: 1) Select a historical time period (e.g., 1950–2000). 2) Use a climate modeling tool or online resource to generate predictions for that period. 3) Compare the model's predictions with actual historical data for global temperatures and CO2 levels. 4) Create a graph or chart to visualize the comparison. 5) Analyze the discrepancies between the model and real-world data to identify potential causes.
claimClimate models produce a range of possible future outcomes rather than a single definitive prediction because of inherent uncertainties in input data and internal processes.
claimClimate models utilize various scenarios to explore how different levels of greenhouse gas emissions, land use, population growth, and energy consumption may affect the Earth's future climate.
claimThe Intergovernmental Panel on Climate Change (IPCC) utilizes Representative Concentration Pathways (RCPs) and Shared Socioeconomic Pathways (SSPs) as widely used scenarios for climate modeling.
claimThe interaction between multiple climate tipping points increases uncertainty in climate models by making it difficult to predict the exact scale and pace of climate change.
claimClimate models that accurately reproduce known past climate events, such as temperature trends and glacial periods, increase scientific confidence in the model's ability to predict future outcomes.
referenceClimate models are complex computer simulations based on physical laws, such as the conservation of energy, designed to simulate interactions between Earth's atmosphere, oceans, land, and ice to predict climate change over time.
claimHindcasting, the process of testing a climate model against historical data like the 20th-century temperature rise, allows scientists to validate model accuracy, identify necessary assumption adjustments, and refine models for future predictions.
claimThe interaction of multiple tipping points creates complex feedback loops that complicate climate models and make it difficult to predict the speed or severity of climate change due to unexpected domino effects.
claimUncertainty in climate models arises from four primary factors: variability in future emissions and land-use changes (inputs), potential inaccuracies in indirect measurements (proxy data), the difficulty of predicting natural events like volcanic eruptions or solar activity (natural variability), and the complexity of modeling processes like ice-albedo or permafrost thawing (feedback loops).
Climate change: evidence and causes | Royal Society royalsociety.org 5 facts
claimWhile climate models vary in their specific projections of additional warming due to differences in assumptions regarding cloud formation and ocean mixing, all such models agree that the overall net effect of feedbacks is to amplify warming.
procedureEstimating feedback processes, the pace of warming, and regional climate change requires mathematical models of the atmosphere, ocean, land, and cryosphere that are based on established laws of physics and run on powerful computers.
referenceIn climate model projections, black lines represent the modelled estimate of past warming, solid lines represent the average of different model runs using the same emissions scenario, and shaded areas represent the measure of the spread (one standard deviation) between temperature changes projected by different models.
claimClimate models project temperature increases based on different emission scenarios, specifically comparing a business-as-usual scenario to a scenario with aggressive emission reductions that fall close to zero within 50 years.
claimAll model projections indicate that Earth will continue to warm considerably more over the next few decades to centuries.
Scientific consensus on climate change - Wikipedia en.wikipedia.org 4 facts
measurementSurveyed scientists rated the ability of contemporary climate models to make 'reasonable predictions' 10 years into the future at 4.8 on a scale of 1 to 7, where higher numbers indicated greater disagreement.
measurementSurveyed scientists rated their confidence in the ability of contemporary climate models to make reasonable predictions 100 years into the future at a mean of 5.2 on a 7-point scale.
measurementSurveyed scientists rated the ability of contemporary climate models to make 'reasonable predictions' 100 years into the future at 5.2 on a scale of 1 to 7, where higher numbers indicated greater disagreement.
measurementSurveyed scientists rated their confidence in the ability of contemporary climate models to make reasonable predictions 10 years into the future at a mean of 4.8 on a 7-point scale.
How a major DOE report hides the whole truth on climate change politico.com Sep 27, 2025 4 facts
claimClimate models from the 1970s accurately predicted current global warming, and peer-reviewed assessments of models since that time have shown that they generally performed well.
claimThe Environmental Protection Agency cited the Department of Energy report to argue that climate models erroneously predicted warming trends, drought, and melting ice.
quote"proceed cautiously and not allow themselves to be influenced by exaggerated claims based on demonstrably faulty climate models."
claimRoy Spencer, an author of the Department of Energy report, wrote a blog post for the Heritage Foundation arguing that climate models are biased and show no meaningful warming trends.
Scientists Say New Government Climate Report Twists Their Work wired.com Jul 30, 2025 3 facts
claimRichard Seager, a research professor at the Lamont-Doherty Earth Observatory of Columbia University, coauthored a paper cited in the Department of Energy (DOE) report regarding discrepancies between climate model predictions and actual measurements of sea-surface temperatures in the Pacific Ocean.
claimZeke Hausfather asserts that the key finding of his 2019 research was that historic climate models were "remarkably accurate in predicting warming," contradicting the interpretation presented in the Department of Energy report.
claimZeke Hausfather claims that the Department of Energy report discarded his paper's main findings and instead used a single figure from supplementary materials to cast doubt on climate models.
Global Warming: The Scientific Consensus climate.envsci.rutgers.edu 2 facts
measurementClimate models project that the global average temperature will rise by 2 to 6°F by the end of the next century.
claimClimate models that incorporate greenhouse gases, aerosols, volcanic eruptions, solar variations, and El Niño produce simulations of the past 100 years that align with the historical surface temperature record.
Dozens of scientists push back on 'fundamentally ... - ABC News abcnews.com Sep 3, 2025 2 facts
claimThe Department of Energy (DOE) report claims that climate models used by scientists overestimate warming trends, that long-term trends for disasters generally do not show significant change, and that the economic impacts of carbon emissions are "negligible."
claimBecca Neumann acknowledges that the effect of higher carbon dioxide concentrations enhancing photosynthesis and boosting crop yields is real and well-documented, but notes that this effect is already factored into the climate and agricultural models that the Department of Energy (DOE) report seeks to discredit.
Misleading U.S. Department of Energy climate report chooses bias ... science.feedback.org Aug 5, 2025 1 fact
claimClimate models agree that CO2 accumulation is the cause of temperature increases, despite variations in modeling specific factors like clouds.
Sustainable Energy Transition for Renewable and Low Carbon Grid ... frontiersin.org Mar 23, 2022 1 fact
measurementCurrent climate models predict a 1.5–4.5°C rise in Earth's temperature if atmospheric CO2 concentration is doubled, as cited in work by Kabeyi and Oludolapo (2020a; 2020b).
The potential land requirements and related land use change ... nature.com Feb 3, 2021 1 fact
referenceThe Global Change Assessment Model (GCAM), version 4.3, is a dynamic-recursive model with technology-rich representations of the economy, energy sector, and land use, linked to a climate model used to explore climate change mitigation policies such as carbon taxes, carbon trading, regulations, and accelerated deployment of energy technologies.
Climate Shocks Are Redefining Energy Security energypolicy.columbia.edu Jul 15, 2025 1 fact
perspectivePlanning according to climate models is necessary for effectively protecting investments, businesses, and defense infrastructure against future climate conditions.
National Academies Publish New Report Reviewing Evidence for ... nationalacademies.org Sep 17, 2025 1 fact
claimAll climate models consistently project continued warming in response to future atmospheric greenhouse gas increases, regardless of assumptions about future emissions scenarios or estimates of climate sensitivity.