Articles tagged with Climate Modeling
Pierre Gentine, a Columbia University professor, has won a $258,011 NASA grant to research turbulence in the earth's atmosphere and improve climate predictions. He aims to model complex turbulent motions and their impact on climate circulation.
Researchers propose a method to determine underground details without drilling, improving climate models and predicting water runoff, landslides, and plant response to climate change. The technique uses groundwater drainage to predict weathered bedrock thickness across landscapes.
A team of AWI climate scientists deciphered a climate paradox from the Miocene era by analyzing complex model simulations. The expansion of the Antarctic ice sheet led to changes in wind patterns, ocean currents, and sea ice in the Southern Ocean, resulting in warming regions despite cooling elsewhere.
Researchers argue that current climate models fail to accurately capture the economic costs of climate change, leading to underestimated damage and ineffective policy decisions. To improve this, scientists must collaborate and update their models more frequently.
A groundbreaking study from the University of Exeter reveals a significant discrepancy between observed and modelled precipitation levels in the Northern Hemisphere mid-latitudes. The study suggests that aerosol concentrations in the atmosphere may be underestimating the impact on regional temperature and precipitation changes.
A team of climatologists led by UC Riverside researchers found that the recent widening of the tropical belt is primarily caused by multi-decadal sea surface temperature variability in the Pacific Ocean, including the Pacific Decadal Oscillation and anthropogenic pollutants. The study suggests that climate models underestimate the obse...
A UCLA study reconstructs the temperature history of a region that influences global climate, revealing significant temperature changes over 20,000 years. The findings also shed light on the mystery of retreating glaciers in the Pacific Ocean's western tropics, with implications for future climate models.
A new statistical hierarchical Bayesian model consolidates climate change information from various sources, including observation-based data sets and climate models. The approach provides an ensemble estimate of current and future climate along with a measure of uncertainty.
A new study finds a statistically significant, minor increase in extreme Arctic cyclone frequency since the middle 19th century, with strongest increases near Iceland and the Aleutian Islands. Climate change may drive stronger shifts in polar climate, leading to more storminess and erosion of Arctic coastlines.
Researchers found that embarking on geoengineering, then stopping, could exacerbate climate change by speeding up global warming. Continuous geoengineering would cause a drastic rate of temperature change, posing significant threats to ecosystems and biodiversity.
Climate change is expected to increase heat waves in the Midwest, claiming hundreds of lives annually. A model developed by MSU systems ecologist Laura Schmitt-Olabisi reveals limitations of previous approaches to reducing deaths and hospitalizations caused by extreme heat.
The study reveals that greenhouse gas effects on climate are uncertain due to complex interactions between aerosols, cloud cover, and sunlight. Researchers highlight the need for improved observational tools and models to reduce uncertainty in climate forcing and predict future impacts of aerosols on weather and climate.
New research reveals global climate sensitivity is higher than previously thought due to correct representation of water vapor in cloud formation. Global temperatures are expected to increase by 3-5°C with a doubling of carbon dioxide, with potentially more extreme warming if emissions are not reduced.
A new study finds that drought frequency is likely to increase globally by the end of the 21st century due to climate change. The research suggests an increase in global severity of hydrological drought, with greater increases if no mitigation policies are implemented.
A new study published in the Proceedings of the National Academy of Sciences finds that climate change will increase global water scarcity, affecting millions of people worldwide. The study estimates that 40% more people will be at risk of absolute water scarcity due to climate change, with significant regional differences in impacts.
A new study by Thomas Frölicher suggests that the Earth's atmosphere could continue to warm for hundreds of years after a complete stop of CO2 emissions, leading to a 25% increase in global temperature. The ESM2M climate model reveals that regional ocean heat uptake is crucial in understanding the effects of climate change.
The study reveals that natural fluctuations in the climate system are the primary cause of differences in short and medium-term projections. Despite this, researchers have found ways to make predictions about local climate extremes for certain regions and large areas, highlighting the importance of considering regional variability.
A new study by Lawrence Livermore National Laboratory scientists shows that global precipitation changes are directly affected by human activities and cannot be explained by natural variability alone. The research found that thermodynamic changes and shifts in atmospheric circulation patterns are contributing to the observed changes.
An international team of researchers urges the development of science needed to manage climate risks and capitalize on unexpected opportunities. Climate preparedness research integrates social and climate science, engineering, and other disciplines.
Researchers have found that El Nino events have been more active and intense over the past 30 years than at any time in the past 600 years. As global average temperatures increase, these extreme events are expected to become even more frequent and severe.
A Princeton University study found that plants have prevented climate change by absorbing 186 billion to 192 billion tons of carbon from the atmosphere since the mid-20th century. This 'carbon sink' has kept global temperatures cooler by one-third of a degree Celsius, preventing catastrophic climate change.
A recent study published in Environmental Research Letters suggests that about half of global warming occurs within the first decade after an instantaneous step increase in atmospheric CO2 concentration, while about one-quarter occurs more than a century later. The research brings together results from leading climate models, revealing...
A Stanford University study projects a significant increase in severe thunderstorms across the US, with an estimated 40% rise in eastern US storms by late 21st century. The research suggests global warming will drive more days with high convective available potential energy and sufficient wind shear to form severe thunderstorms.
A new special issue of the NeoBiota journal explores advancing risk assessment models to address climate change, economics, and uncertainty in pest control. The article focuses on interactions between pest risk and climate change, policy and economics, as well as pest control and surveillance.
Research suggests that external changes can impact the strength and timing of El Niño events. Over 4,300 years, the ENSO cycle has changed due to natural influences on the Earth's climate, such as variations in its orbit around the sun.
A team of researchers has discovered key properties of tar balls and soot particles in wildfire smoke, which could improve climate change forecasts. The study provides new insights into how these particles affect climate, including their role in cloud formation and potential warming or cooling effects.
A new study by Prof. Sarah Kang found a significant relationship between ozone depletion and extreme daily precipitation in the Austral summer. The research used two global climate models to analyze the impact of stratospheric ozone depletion on precipitation patterns.
Research at Princeton University compares agricultural projections from empirical and mechanistic models, finding that empirical models may show greater losses as a result of climate change, while mechanistic models may be overly optimistic. The study highlights the importance of understanding model biases and using both model classes ...
The Greenland ice sheet is losing about 227 gigatonnes of ice per year, contributing to sea level rise. Researchers have coupled an ice/climate model with a thermo-mechanical model to accurately depict the ice sheet's dynamics and temperature changes.
A new study finds that current conservation efforts for the Iberian lynx are insufficient to save the species from extinction within 50 years, as climate change is not accounted for in management plans. The research highlights the importance of integrating climate models into biodiversity management.
Researchers used sophisticated three-dimensional climate models to solve the 'faint young sun paradox,' explaining how early Earth remained habitable despite a 20% dimmer sun. Moderate greenhouse gas inventories, including 20,000 ppm of CO2 and 1,000 ppm of methane, may have sustained liquid water and primitive life.
A recent study found that human influences through global warming increased the chances of Australians experiencing record hot summers like 2013 by more than five times. The research suggests that greenhouse gas emissions will lead to even more frequent and severe extreme heat events in the future.
Scientific studies estimate Colorado River flow declines of 6-45% by 2050, varying due to climate models and spatial resolution. The new study provides a framework for comparison, identifying key factors affecting predictions.
Researchers at Michigan State University have developed a new crop modeling system called SALUS to better predict global wheat yields and their impact on the environment. The system integrates multiple crop simulations with improved climate change models, reducing uncertainties and providing more accurate forecasts.
A new paper validates a fundamental assumption in space-for-time substitution, a popular approach for predicting relationships between complex variables. The study used fossilized pollen data to reconstruct ancient ecosystems and found that the model explained about 72 percent of the variation in their time data.
A new study published in Nature Geoscience investigates the ability of climate models to simulate tropical climate change by analyzing preserved geological evidence from the Last Glacial Maximum. The research reveals that only one model reproduces the rainfall patterns found from the geological evidence, with implications for simulatin...
New research reveals that sulfate aerosols form through an oxidation pathway involving transition metal ions, which may affect climate cooling estimates. This could lead to overestimated climate cooling effects in some regions.
Researchers used clumped isotope thermometry to determine temperatures on land during the last ice age, finding a 2-4 times greater increase than previously thought. Climate models that accurately depicted atmospheric processes were more accurate in predicting temperature changes.
Coral reefs face declining health due to climate change, pollution, and overfishing. However, researchers suggest that proactive measures can prevent their collapse, emphasizing the importance of reef function and local management.
New research predicts boreal forests will shift north, releasing more trapped carbon than current climate models predict. The approach considers random events like fire and drought that impact forest health, providing a more accurate forecast.
Researchers tracked increasing melt rates since 1979 but July 2012 event was unusually large, prompting study on low-level clouds. Thin clouds allowed solar energy to pass through, trapping heat and pushing temperatures above freezing, contributing to record-breaking ice melt.
Researchers studied ancient sea surface temperatures to understand why the Earth was warmer 4-5 million years ago. They found that current climate models may be missing key processes, which could help improve future predictions if uncovered.
A team of researchers has found that climate models are too conservative in forecasting tropical changes, as a giant pool of warm water four million years ago suggests. The study, published in Nature, analyzed sea surface temperature records and found that none of the proposed mechanisms can explain the Pliocene era's unique conditions.
Rising temperatures are expected to lead to a massive 'greening' of the Arctic, with wooded areas increasing by up to 50% over the next few decades. This dramatic change will accelerate climate warming at a rate greater than previously predicted, having significant impacts on the global ecosystem.
Researchers predict a massive 'greening' of the Arctic due to rising temperatures, which could lead to an acceleration of climate warming. The models suggest that tree cover could increase by up to 50% over the next few decades, resulting in significant impacts on the global ecosystem.
New research from the Niels Bohr Institute predicts a tenfold increase in extreme storm surges due to global warming, resulting in 'Katrina' magnitude storms every other year. The study suggests that 0.4 degrees Celcius warming already leads to a doubling of extreme storm surges and an additional 3-4 times increase with further warming.
New research reveals that poor simulation of cloud cover in the Southern Ocean is the primary contributor to climate models' glitch in tropical rainfall. The study found that excessive sunlight reaching the ocean surface causes heat accumulation, leading to incorrect rainfall forecasts.
Scientists use direct statistical simulation to model fluid jets, fast-moving flows in oceans and atmosphere. The new approach is a key step toward bringing basic physics models to bear on climate science, enabling more efficient climate simulations.
A new laser hygrometer has been proven suitable as a transfer standard for atmospheric water vapor measurements, improving the accuracy of weather and climate models. The SEALDH system has demonstrated excellent performance in field conditions, with a detection limit in the ppm range and an ability to work autonomously.
A new climate model developed at NOAA's GFDL predicts an increase in snowfall for Earth's polar regions and highest altitudes, but a decline globally due to rising CO2 levels. This could spell trouble for regions relying on snowmelt as a source of fresh water.
Scientists studied cloud formation over various regions and found no significant impact from organic coatings on particle formation rates. This discovery helps reduce uncertainty in climate models and provides a step towards more accurate predictions.
Climate change is a range of possible events with varying likelihoods, and moderate actions today can reduce negative impacts. Experts like Mark Berliner emphasize the need to understand this spectrum of possibilities rather than adopting an all-or-nothing approach.
A study by University of Exeter researchers reveals tropical forests' sensitivity to climate change, with significant carbon release expected if climate models are inaccurate. The team found a correlation between year-to-year variations in carbon dioxide concentration and long-term changes in tropical forest carbon storage.
A new study predicts that spring budburst will occur 8-40 days earlier by 2100, with the greatest changes in northern states, potentially giving deciduous trees a competitive advantage over evergreens. This shift may alter carbon sequestration and forest composition.
Researchers predict significant changes in summer ranges of endangered Indiana bats due to climate change. Suitable habitats are expected to shift to the northeastern US and Appalachian Mountains.
Scientists analyzed fossil corals to expand El Nino-Southern Oscillation information, helping assess accuracy of climate models for 21st century change in the tropical Pacific. The study detected a modest increase in 20th century ENSO strength, but also found higher levels of variability 400 years ago.
Researchers detect volcanic carbon monoxide emissions via satellite sensors, estimating a global emission of approximately 5.5 teragrams per year. Antarctic sea ice thickness affects algae populations, with varying seasonal patterns and relationships between surface, interior, and underside layers.
The inclusion of intense but small-scale polar storms in climate models could lead to a different picture of climate change. Adding these storms results in significant changes in ocean circulation, including an increase in heat traveling north in the Atlantic Ocean.
A new climate model simulates the effects of Arctic hurricanes on ocean water circulation and climate, suggesting potentially cooler conditions in Europe and North America. The research finds that polar lows influence the sinking of dense cold water in the North Atlantic, driving large-scale ocean circulation.
Regional climate models project warmer temperatures and wetter winters in the Northeast US by 2070, with temperatures rising 2-3 degrees C and winter precipitation increasing 12-15%. However, confidence in spring, summer, and autumn precipitation changes is lower.