A new analysis suggests that future global temperatures may exceed projections by a factor of two, with potentially catastrophic consequences. The study, led by NCAR scientist Jeffrey Kiehl, warns that continued high levels of carbon dioxide in the atmosphere could lead to a repeat of Earth's hot past.
A new study by National Center for Atmospheric Research scientist Jeffrey Kiehl examines the relationship between global temperatures and high levels of carbon dioxide in the atmosphere tens of millions of years ago. The study finds that atmospheric concentrations of greenhouse gas may reach levels that existed about 30 million to 100 ...
Global surface temperatures in 2010 tied 2005 as the warmest on record, with the next warmest years being statistically tied for third warmest year. The climate has warmed by approximately 0.36F per decade since the late 1970s.
A new study finds that car travel has a higher long-term impact on global warming than plane travel, with a fourfold increase in temperature rise over time. In contrast, air travel has a more significant short-term effect due to its high-altitude emissions.
A new study suggests that current climate change targets are unsafe, as global temperatures appear to be comparable to projections for the end of this century. The analysis of geological records reveals that sea levels will rise significantly higher than anticipated, with a rate of rise more than double recent observations.
The summer of 2023 was the fourth-warmest on record, with June to August temperatures globally being warmer than previous years but not unprecedentedly so. Global warming has increased the frequency of extreme warm anomalies, making events like the Moscow heat wave more likely.
A new study finds that traveling by car increases global temperatures more significantly than flying over the long term due to higher carbon dioxide emissions. In contrast, air travel has a greater adverse climate impact in the short run due to its effects on high-altitude ozone and clouds.
A team of climate scientists found that more frequent tropical cyclones in the Pliocene epoch could have led to persistent El Niño-like conditions. The study suggests that these storms may have contributed to a positive feedback cycle between tropical cyclones and upper-ocean circulation, leading to changes in atmospheric patterns.
The past year was tied for the second warmest since 1880, while January 2000 to December 2009 was the warmest decade on record. Global temperatures have increased by about 1.5 degrees F (0.8 degrees C) since 1880.
A new Yale University study suggests that current CO2 levels could lead to a greater temperature increase than previously thought, with temperatures potentially rising by 3 degrees Celsius or more. The research found that a relatively small rise in atmospheric CO2 was associated with substantial global warming during the mid- and early...
A recent study published in Nature Geoscience suggests that the climate may be 30-50 percent more sensitive to atmospheric carbon dioxide than previously thought. This increased sensitivity could lead to more accurate long-term projections and a better understanding of climate change's impacts on global temperatures.
Researchers have discovered a direct relationship between carbon dioxide emissions and global warming, allowing for the estimation of climate change based on cumulative carbon emissions. The study suggests that limiting total carbon emissions is crucial to avoid dangerous climate change.
The NASA Goddard Institute for Space Studies found that 2008 was the coolest year on record since 2000, with most of the world experiencing near-normal or warmer temperatures. A strong La Niña event in the Pacific Ocean contributed to the cooling effect.
A survey of 3,146 earth scientists found consensus on the reality of climate change, with climatologists showing strongest agreement. Petroleum geologists and meteorologists were among the biggest doubters, but most still acknowledge human involvement in global warming.
Respiratory syncytial virus (RSV) infections in infants and young children may be shortened by three weeks per degree Celsius rise in annual mean daily temperature. Rising temperatures may also increase the spread of other respiratory illnesses, such as influenza.
The 2004 global average temperature was 0.48 degrees Celsius above the 1951-1980 baseline, making it the fourth warmest year on record. Human-made pollutants play a significant role in climate change, with Earth's surface absorbing more solar energy than reflected back to space.
The climatic effect of increased CO2 is uncertain due to unknown aerosol influence, which can mask greenhouse gas effects. This limits refinement of climate sensitivity estimates and decision-making on carbon emissions.
A recent study by Texas A&M University researchers suggests that natural climate variability may contribute up to half of the observed global surface warming since the 1970s. The analysis of ocean surface temperature records in the tropical Pacific indicates that long-term changes in ocean temperatures precede global air temperature ch...
New estimates suggest that Earth's temperature could rise between 1.7 and 4.9 degrees Celsius over the next 100 years, with a 90% likelihood of warming within this range. The likelihood of more extreme warming scenarios is low, but still poses significant risks to society if not addressed through climate control measures.