Articles tagged with Climate Modeling
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A study of 12 centuries of European summer droughts reveals that recent changes in drought patterns are not unprecedented. The research team found that climate models exaggerate temperature-driven drought risk in northern Europe, while underestimating excessive precipitation and flood risks.
A new study uses ancient plankton fossils to infer temperature data from the Pliocene era, a geological epoch with CO2 levels similar to today's. The findings resolve discrepancies between climate models and other proxy temperature measurements, showing that the Pliocene is a good analog for future climate predictions.
Researchers have used radiokrypton dating to analyze groundwater in the Negev desert, revealing two distinct sources of ancient water that date back 400,000 years. The study suggests that moisture was delivered from the Atlantic Ocean during cooler climates, providing a unique insight into the region's past hydro-climates.
A new reconstruction of global average surface temperature change over the past 2,000 years identified the main causes for decade-scale climate changes. The researchers found that airborne particles from volcanic eruptions were primarily responsible for several brief episodes of global cooling prior to the Industrial Revolution.
Researchers found drastic drops in organic material preserved in core samples from the Paleocene-Eocene Thermal Maximum event, suggesting soils emitted atmospheric carbon dioxide. The findings could mean global climate models overestimate terrestrial ecosystems' ability to mitigate future warming.
A new study suggests that reducing China's ozone pollution can prevent hundreds of thousands of premature deaths by 2050. The research found that climate change alone could cause a 11% increase in ozone pollution, leading to an additional 62,000 premature deaths.
The FGOALS-f3-L climate model has been developed to capture the basic patterns of atmospheric circulation and precipitation. The new model is fast in completing computing tasks and overcomes some model biases related to climate sensitivity and cloud microphysics.
Scientists have made significant advancements in measuring global ice sheet mass using satellite imaging and remote sensing equipment, allowing for greater detail than ever before. This improves the connection between climate variations and ice mass changes over time.
A new statistical approach calculates the likelihood of an ice-free Arctic Ocean at different warming levels, finding a 6% chance at 1.5°C and 28% at 2°C. The research suggests a sea ice-free summer Arctic Ocean is most likely to occur at 2-2.5°C warming.
A recent study published in Journal of Climate confirms that the Tibetan Plateau plays a key role in enhancing East Asian summer monsoon circulation under global warming. The study found that enhanced latent heating over the plateau stimulates cyclone anomalies, leading to stronger southerly winds in East Asia.
Researchers confirm that the tropical atmospheric circulation pattern, the Hadley cell, is weakening due to anthropogenic emissions. This finding has significant implications for predicting future subtropical rainfall and the drying of regions already receiving little rainfall.
Frontera, located at the University of Texas at Austin, achieved the highest scale and data analysis capabilities ever deployed at a university in the US. The system supports dozens of research teams aiming to solve massive computational problems, including climate simulations and machine learning-enabled cancer studies.
A University of Guelph study found that including social processes in climate models can alter predictions and may hold the key to reducing global warming. Researchers developed a new model that accounts for social learning, finding that higher rates of social learning are needed to meet the 1.5-degree target.
A new climate modeling approach suggests that social processes strongly affect global warming predictions, and mitigation efforts should account for this influence. The rate at which people learn about climate mitigation strategies via social interactions can raise warming predictions by over 1 degree Celsius.
The University of Copenhagen has opened a new research center, TiPES, to study climate tipping points and develop improved climate models. The center aims to better understand the mechanisms of sudden and violent changes in the climate system, which could trigger dramatic new climatic changes.
A study predicts that operating costs for US state parks will surpass state budgets by the middle of the century due to increasing visitor numbers. Climate change may exacerbate this trend, with some scenarios suggesting a 756% increase in operating costs under one scenario.
Researchers at University of Maryland Baltimore County develop new method to measure atmospheric hydroxyl radicals, a key molecule involved in methane breakdown. This improvement can enhance the accuracy of climate models and inform policy decisions on reducing methane emissions.
A climate model has been developed that accurately depicts the winding course of the jet stream, a major air current over the Northern Hemisphere. The new model shows that climate change is causing the jet stream to falter, leading to extreme weather conditions in Central Europe and North America.
A new numerical model suggests that plankton biomass controls the carbon cycle in the ocean, leading to a self-sustained 40k yr climate cycle. This finding challenges the standard theory of climate change driven by solar radiation and orbital forcing.
A team of scientists identified the tropical Pacific as a crucial factor in climate forecasting, with natural climatic fluctuations affecting future climate development. Better ocean data, particularly subsurface data, can improve predictions significantly.
A Northwestern University study concludes that human-caused climate change played only a minor role in the city's record-breaking air pollution event. Researchers suggest that reducing greenhouse gas emissions can greatly improve air quality and mitigate health problems, making it a win-win for public health and the environment.
Researchers reconstructed Greenland Ice Sheet mass changes from 1972 to 2018 using data on ice velocity, thickness, and surface elevation. The study found a significant increase in ice loss, with an average of 290 Gt per year during 2010-2018, contributing to a 13.7 mm rise in global sea level.
The North Atlantic warming hole has a significant impact on the North Atlantic jet stream, leading to changes in atmospheric circulation and storm tracks. The cooling pattern caused by the warming hole is predicted to become greater and more apparent as the century progresses.
Global climate models can adequately simulate temperature variability at timescales of years to multiple millennia. The study suggests that with correct initial and boundary conditions, particularly in the deep ocean, forecasting temperature variations becomes more feasible.
Climate scientists are partnering with the City and County of San Francisco to assess how climate change may influence the intensity of atmospheric rivers and associated precipitation. Using high-resolution climate simulations at a resolution of 3 km, researchers aim to provide more accurate predictions about extreme weather events in ...
A new study reveals that recent intensification of the equatorial Pacific wind system known as Walker Circulation is unrelated to human influences and can be explained by natural processes. The observed strengthening of the Walker circulation from about 1990-2013 was a naturally occurring phenomenon, contrary to projections of anthropo...
Researchers found a slowdown of the Walker cell during solar-cycle maxima, shifting trade winds and precipitation patterns in the tropical Pacific. The study suggests that global hydrology and ocean-atmosphere coupling amplify the solar signal.
A new study by UChicago scientists found significant river runoff persisted on Mars later into its history than previously thought. The intense runoff, which was wider than those on Earth today, occurred at hundreds of locations and suggests a complex climate with strong greenhouse effects.
A new crop-climate coupled model simulates crop development and production, offering improved accuracy in climate predictions. The model successfully captures crop phenology and corrects biases in the original climate model, making it a valuable tool for global change studies.
Research from Oregon State University suggests that climate change could lead to a 52% increase in tropical storm-related deaths, mainly affecting vulnerable populations in developing countries. The study's findings are based on analyzing mortality data and simulating the impact of climate change on storm frequency and severity.
A team of scientists developed an approach to reduce uncertainties in future climate change by analyzing collective climate model projections. They found that certain aspects of the current climate are most related to differences in the future climate, and measurements can be used to select out the most likely future climates.
New research finds that smaller doses of solar geoengineering could work in tandem with emission cuts to lower the risks of a changing climate. The study suggests that no IPCC-defined region would be made worse off, with big uncertainties remaining but potentially uniform benefits across the globe.
A new study suggests that meeting a 2-degrees Celsius warming limit by 2100 is exceptionally difficult, but pursuing aggressive carbon-neutral energy production and rapid reductions can provide a hedge against high climate sensitivity scenarios. The researchers emphasize the need for immediate global action to mitigate climate change.
A team of scientists has uncovered new evidence that suggests central Tibet was no higher than 2.3km with large lakes fringed by subtropical vegetation and deep valleys. The discovery uses ancient palm leaves to challenge previous estimates of the region's elevation.
Scientists found that wind stress and its curl are key factors in simulating the Pacific North Equatorial Countercurrent. Weak biases in these models affect tropical surface currents and climate simulations.
A study predicts that Asian elephants in India and Nepal will face significant habitat loss, with potential shifts towards higher elevations in the Himalayas. The research suggests that climate change and land use will compound existing threats to elephant populations.
A new study predicts the Arctic Ocean could be ice-free in the summer as early as 2030, with climate models suggesting a shift towards an ice-free Arctic on the earlier side of forecasts. The study used long-term temperature cycles in the tropical Pacific to narrow the uncertainty range of when the first ice-free Arctic summer will occur.
A new study suggests that high CO2 levels above 1,200 ppm could lead to the loss of low-level clouds, resulting in a 8-Kelvin temperature increase globally. The researchers used a small-scale model to simulate cloud instability and found that once the clouds vanish, they do not reappear until CO2 levels drop significantly.
Scientists from Institute of Atmospheric Physics found a strong relationship between historical precipitation biases in South Asia and the western North Pacific and future Sahel precipitation projections. The study reveals a 109% increase in Sahel summer precipitation and a 119% increase in available water resources due to global warming.
Researchers from Canada and Germany used a supercomputer to simulate climate trends in Quebec and Bavaria from 1950 to 2100, providing insights into severe flooding dynamics under changing climate conditions. The study's results showed good agreement with historical climate data, confirming the predictive power of the simulations.
A study by German scientists uses AI to enhance climate and Earth system models, improving predictions for extreme events and seasonal changes. By combining physical modeling with machine learning techniques, researchers aim to create more accurate models that capture complex dynamic processes.
A new model developed by the University of Illinois predicts how ground shipping will affect future human health and the environment. The study found that a carbon tax could lead to a 24% reduction in greenhouse gas emissions, while enforcing truck fleet maintenance could cut particulate emissions by one-third by 2050.
A new review paper by international climate experts highlights the prospects for skilful near-term climate predictions, out to just a few years ahead. These enhanced models feature the effects of man-made greenhouse gases and natural drivers, providing valuable information for policymakers and aid agencies.
New evaluation tools and global climate models will enable a more complete comparison of models to ground-based and satellite measurements. This combination can significantly reduce uncertainties in key aspects of future climate change, according to a study published in Nature Climate Change.
Researchers disentangled 'hiatus' confusion by analyzing global surface temperature data and comparing model projections to observations. They found no statistical evidence of a pause or slowdown in global warming.
A team of climate researchers reviewed existing data and concluded there has never been a statistically significant 'pause' in global warming. The studies, published in Environmental Research Letters, reassessed the data and put it into historical context to find no evidence for a divergence between model projections and observations.
Scientists and engineers will collaborate on a new Climate Modeling Alliance to advance climate modeling and prediction. The goal is a climate model that projects future changes more accurately, with uncertainties at least half the size of existing models.
A new study reveals that the Indian Ocean played a far greater role in driving climate change during the last ice age and may disrupt climate again in the future. The research found that changes in ocean temperatures and winds drove radical climate shifts, challenging Pacific-centric theories.
A study by Berkeley Lab found that the Sierra Nevada snowpack could drop by 79% by 2100, leading to a shift in peak timing four weeks earlier. The researchers worked closely with water managers to produce 'actionable science' for resource planning purposes.
A recent study suggests that humans are accelerating a long-term cooling trend, tracing back at least 50 million years, with projected warming expected by 2030 and potentially reaching Eocene-like conditions by 2150. The research implies that the planet's climate may resemble that of the mid-Pliocene epoch within two centuries.
A recent study found that pulses of organic carbon reaching the deep sea are not accurately represented in global climate models. The research, conducted at Station M off California's coast, showed a significant increase in pulse events between 2011 and 2017, with 40% of total carbon arriving during these episodes.
A new study reveals that human-caused climate change drives uneven sea level rise, with regions experiencing higher rates expected to continue trending. Climate models suggest that up to half of regional variation in sea level rise can be attributed to climate change.
A recent study analyzed climate simulations and found that sea-level rise trends are largely driven by external factors such as aerosols and greenhouse gas emissions. The researchers used satellite altimetry data to calculate the forced response in sea level, which showed significant correlation with internal variability.
Researchers have discovered a universal power law describing black carbon's light absorption, which could help climate scientists build more accurate models. The findings suggest that warming due to black carbon may have been underestimated by current climate models.
The study found that Antarctic melting will delay atmospheric warming by about a decade but accelerate sea level rise. The global temperature is projected to increase by 2 degrees C by the year 2065, rather than 2053.
Dynamical downscaling methods aim to improve fine-scale climate information by integrating regional climate models with global climate models. Recent research reviewed these methods, highlighting their merits and limitations in constraining model biases through bias correction techniques.
Researchers analyzed data from over 185 ground stations and found that half of the world's measured precipitation falls within a 12-day period, set to become even more skewed under climate change. This uneven distribution could lead to increased flooding and damage associated with extreme weather events.
Researchers found that recent hurricanes like Katrina, Irma, and Maria experienced increased rainfall of 5-10%, while projected future storms could have even more intense rainfall and stronger winds. A warmer climate may also alter storm structures, with the inner part robbing moisture from the outer edges.
A recent study predicts ragweed will expand its range northward due to climate change, reaching areas including New York and Vermont. The plant's distribution is expected to surge in the eastern US by the 2050s before declining slightly in the following decades.
A predictive model suggests common ragweed will expand its range into major northeast metro areas due to climate change, affecting millions with hay fever and asthma. The study found potential expansion at the northern margins of its current distribution, particularly in the northeast U.S.