A study by NYU and Temple researchers found that local weather patterns temporarily affect people's beliefs about evidence for global warming. Americans living in warmer-than-normal temperatures were more likely to agree that there is solid evidence for global warming, with a 1% increase for every 3°F rise above normal.
The continent of Antarctica is at risk from growing threats including global warming, loss of sea ice, increased tourism, over-fishing, pollution, and invasive species. The Antarctic Treaty System faces pressure due to climate changes and natural resource interests.
The study reveals that reduced Arctic sea ice contributes to ground-level warming, while global warming intensifies atmospheric circulation and temperature increases in the Arctic atmosphere. The combination of these factors amplifies the greenhouse effect, leading to faster Arctic warming.
A new study projects significant sea-level rise of up to 3.5 metres even at relatively low levels of global warming, highlighting the need for reducing greenhouse-gas emissions. Limiting warming to below 1.5 degrees Celsius could halve sea-level rise by 2300.
New research by Lawrence Livermore National Laboratory scientists reveals that human activities are the primary cause of global ocean warming over the past 50 years. The study analyzed observational and modeling uncertainties to confirm this conclusion.
A new study by UCI researchers found that heating soil in Wisconsin and North Carolina woodlands can increase carbon dioxide release into the atmosphere up to eight times. The study suggests that soils could accelerate global warming through a vicious cycle, where man-made warming releases carbon from soils to the atmosphere.
Australian scientists detected changes in ocean salinity, indicating an acceleration in the global rainfall and evaporation cycle. The water cycle has strengthened by four percent from 1950-2000, with high rainfall regions becoming wetter and arid areas drier due to global warming.
Long-term historical observations reveal plants leafing and flowering sooner due to rising temperatures, contrary to results from controlled environmental warming experiments. This discrepancy suggests that estimated ecosystem changes may be far greater than current estimates based on experimental data.
A new study reveals that ocean currents may mitigate warming near a handful of equatorial islands, including some in the nation of Kiribati. This finding has important implications for the survival of coral reef systems and provides hope for these at-risk Pacific islands to avoid the devastating effects of global warming.
Particulate pollution in the late 20th century created a 'warming hole' over the eastern United States, delaying the warming expected from increasing greenhouse gases. The effects of this pollution were amplified by interactions between clouds and particles, leading to greater cooling at the surface.
A decade-long study found that plants may thrive in the early stages of global warming but then deteriorate quickly as ecosystems adjust. The research showed that long-term warming leads to loss of native species and increased cycling of nitrogen, ultimately reducing plant productivity.
Scientists compiled core samples from around the world to reconstruct global temperature and find a strong correlation between rising CO2 and warming at the end of the ice age. CO2 trails Antarctic warming but precedes global temperature change, supporting its role in climate change.
Scientists link ancient global warming events to thawing permafrost, revealing a significant source of carbon in Polar Regions. This discovery highlights the vulnerability of frozen soils to climate warming and the potential for a positive feedback loop amplifying future warming.
Researchers reconstruct global surface temperatures and find that average temperature correlated with rising CO2 levels, indicating the greenhouse effect played a key role in ending the last Ice Age. The study provides evidence that CO2 caused much of the global warming, contrasting previous efforts that only examined local temperatures.
New research reveals that rainfall has a greater impact on China's agriculture than rising temperatures. The study, published in the Journal of the Science of Food and Agriculture, found that maize is sensitive to warming but not as affected by rainfall variability as previously thought.
Researchers propose that thawing permafrost 50 million years ago released massive amounts of carbon into the atmosphere, triggering global warming events. The study suggests a simple new mechanism for past global warming events and highlights the potential for similar feedback loops in modern times.
A new study reveals a global ocean warming trend spanning at least 100 years, with an average increase of .33-degree Celsius in upper ocean temperatures. The research uses historical temperature readings from HMS Challenger's 1872-1876 voyage and modern data from the Argo program.
Recent extreme weather events show a clear link to global warming, according to a new analysis of scientific evidence. The study found that warming temperatures lead to more frequent heatwaves and heavy rainfall, but the relationship with storms is less clear.
A University of Connecticut study reveals that growing economic uncertainty leads to decreased public belief in man-made global warming. Research found a strong correlation between unemployment rates and climate change skepticism, with jobless rates dropping skepticism among the public.
A new study suggests the Greenland ice sheet may melt completely within 500 years under 8 degrees Celsius global warming, while a 2-degree limit would take 50,000 years to achieve. The melting could accelerate due to feedbacks between climate and the ice sheet, with significant consequences for sea levels.
Canada's outdoor skating season has decreased significantly due to global warming, with the Prairies and Southwest regions experiencing the largest decreases. The research predicts a complete end to outdoor skating in British Columbia and Southern Alberta within a few decades.
The Tasman Sea has become a global warming hotspot, with ocean temperatures rising two degrees warmer than 60 years ago due to intensified east-west winds and greenhouse gas emissions. A long-term monitoring network is needed to track these changes.
The climatic Solar Terms have advanced by 6-15 days and delayed by 5-6 days across China due to global warming. This shift affects agricultural planning, with earlier springs and later autumns impacting phenology-related terms.
Research suggests the Earth's paleoclimate history indicates a more sensitive climate than thought, with temperatures far exceeding the Eemian period if global warming is not abated. A 2°C warming target could lead to drastic changes, including multiple meters of sea level rise and significant ice sheet loss in Greenland and Antarctica.
Researchers analyzed five global temperature data sets and found that after removing short-term fluctuations, all five data sets showed excellent agreement, indicating that global warming is not slowing down. The study suggests that temperatures will continue to rise, emphasizing the urgency of addressing human influence on climate.
A recent survey found near unanimous agreement among climate scientists on human-caused global warming, but many Americans believe most scientists disagree. This misperception reduces certainty about global warming and climate policy support. Correcting this misunderstanding is crucial to addressing the issue.
Research suggests that carbon dioxide emissions must decrease to zero within two decades to limit global warming to safe levels. To achieve this, countries need to reduce their emissions by at least three percent per year.
Researchers found that organic carbon resides in the Ganges-Brahmaputra system for 500-17,000 years, making it a significant source of terrestrial biospheric carbon to the ocean. The relatively long carbon residence time poses big implications for the global carbon cycle.
A recent study on Australian herbarium records found that up to 25% of temperate seaweed species may be headed to extinction due to ocean warming. The research reveals significant changes in seaweed communities over the past 50 years, with many species retreating south towards the Australian south coast.
Researchers quantify urban 'heat island' effect for the first time, showing its modest contribution to global warming. The study reveals that white roofs do not reduce the urban heat island effect and may even cause a net global warming due to increased cloudiness.
A new analysis suggests that Earth's deep oceans can absorb enough heat to flatten the rate of global warming for periods of up to a decade. The study used computer simulations and found that ocean layers deeper than 1,000 feet are the main location of the 'missing heat' during these periods.
A new study suggests that the planet's deep oceans can absorb enough heat to flatten the rate of global warming for periods of up to a decade. The research, based on computer simulations of global climate, points to ocean layers deeper than 1,000 feet as the main location of the 'missing heat'.
A new study reveals that warming seas are changing the composition of fish communities in the northeast Atlantic, with southerly species dominating and colder species declining. The analysis of data from over a million fish across 28 years shows a significant increase in warm-water species and a decrease in cold-adapted species.
Researchers discovered that evaporated water from trees and lakes helps cool the entire atmosphere, not just locally, through increased cloud formation and reflection of solar radiation. This process has significant implications for land-use decision-making and mitigating global warming.
A new study suggests that reducing soot emissions from diesel engines and other sources could slow melting of sea ice in the Arctic faster and more economically than any other quick fix. Soot emissions are second only to carbon dioxide in promoting global warming, but their effects have been underestimated in previous climate models.
A new study suggests that reforestation on abandoned agricultural land can have a significant cooling effect on the climate. By considering historical patterns of land-use conversion, researchers found that farmers generally chose to use more productive and snow-free lands, which can absorb more carbon dioxide and reduce global warming.
New research suggests that warming ocean layers surrounding the Greenland and Antarctic ice sheets will melt underwater portions faster than previously thought. This would increase sea level rise more than already projected.
A new Stanford University study projects that global warming could reduce the suitable land for premium wine grape cultivation in high-value areas of northern California by 50% by 2040. Meanwhile, some cooler parts of Oregon and Washington State may see an increase in premium grape-growing acreage due to warming.
Researchers have pinned down the timing of the Paleocene-Eocene thermal maximum (PETM), an ancient global warming event that occurred around 56 million years ago. The study suggests that the event was triggered by a different mechanism, possibly related to volcanism, rather than cyclic variations in Earth's orbit.
Researchers found that ancient global warming, known as the Palaeocene–Eocene Thermal Maximum (PETM), saw slower rate of carbon emissions compared to current levels. The study suggests that humankind's carbon footprint may be accelerating modern climate change.
A new study predicts that global warming will limit access in certain Arctic areas but increase it in others, particularly for coastal communities and shipping concerns. Inland mining, timber, and small communities may be negatively affected by reduced road accessibility.
A study by Columbia Business School found that people's beliefs on global warming are influenced by daily temperature, with warmer days leading to increased concern. The researchers surveyed over 1,200 people and found that perceptions of temperature correlated with reality three-quarters of the time.
A MBL study found that warming causes more nitrogen to become available to trees, allowing them to grow faster and store more carbon. This is a positive effect on carbon storage, but the overall impact of global warming on forest ecosystems will also depend on other factors such as water availability and atmospheric CO2 concentration
The Stevens Institute of Technology's Center for Science Writings awarded the 2010 book Storms of My Grandchildren by Dr. James Hansen the Green Book Award, recognizing its compelling call to action on global climate change. The award honors books that address environmental issues in a compelling way.
A CSIRO Australia study found that ocean warming is detrimental to the growth of a long-lived south-east Australian and New Zealand inshore species, the banded morwong. The research team analyzed long-term changes in the growth rates of the banded morwong and observed slowed growth at warmer temperatures.
Researchers at the University of Georgia identified the biochemical pathway that controls how bacteria release sulfur compounds into the ocean and atmosphere, a discovery that could help mitigate global warming. The study found that the pathway is widespread among bacterioplankton in the ocean and non-marine environments.
A new study led by Stanford University researchers found that US farmers have largely avoided the impacts of global warming on wheat and corn production. However, with projected temperature increases, it is likely that North American crop yields will eventually be affected.
A study by Michigan State University researcher Aaron M. McCright found that Democrats generally believe in global warming more now than they did 10 years ago, while Republicans increasingly deny its existence. The gap between these groups has increased over the past decade, hindering meaningful national energy policies.
New research from Carnegie Institution scientists found that black carbon aerosols have a greater effect on surface warming when emitted near the land and ocean surface. However, as altitude increases, surface warming decreases, while cooling occurs in the stratosphere.
Researchers studied three species of shootingstars to understand their response to global warming. They found that some species migrated while others adapted in place, with rare species exhibiting distinct genetic histories. This study provides valuable clues for predicting how plants will respond to climate change.
Researchers at Scripps Institution of Oceanography found evidence of ancient 'hyperthermals' - sudden global warming events that occurred tens of thousands of years ago, with impacts on marine life and ocean circulation.
A University of Michigan study found that more people believe in 'climate change' than 'global warming', with a difference driven by partisan orientation and question wording. Overall, 74% believed climate change was real when referred to as such, while 68% did so when called global warming.
Scientists have unraveled the environmental changes in the Arctic during an ancient bout of natural global warming. The Paleocene–Eocene Thermal Maximum (PETM) led to a 15-metre succession of sediment representing a 170,000-year event, with sea level peaking about 13,000 years into the period.
A George Mason University study reveals that 'Climategate' led to skepticism among US TV meteorologists about global warming, with men and conservatives more likely to doubt its existence. The poll found that nearly all respondents followed the story, but many became skeptical of climate science as a result.
Researchers reconstructed Arctic ocean conditions during Late Cretaceous greenhouse periods, finding periodicities matching modern Arctic climate influences. The findings suggest that natural modes of climate variability, such as ENSO and AO/NAO, may remain unchanged under global warming.
A new international study reveals that warming North Atlantic Ocean water is likely tied to the amplification of global warming in the Arctic. Water temperatures in the Fram Strait, which runs between Greenland and Svalbard, have warmed by roughly 3.5 degrees Fahrenheit in the past century.
The research aims to mitigate Arctic climate change by reducing black carbon emissions at mid-latitudes and Europe. The study will assess the impact of black carbon on Arctic climate and its links with warming caused by carbon dioxide.
New research from the University of Michigan reveals that decreasing snow and ice cover in the Northern Hemisphere has exacerbated global warming, with a stronger positive feedback mechanism than initially predicted. The study shows that the cryospheric albedo feedback is almost twice as strong as models have simulated, contributing to...
A new study by Andrew Dessler at Texas A&M University found that cloud feedback will amplify global warming over the next century. The research uses measurements from NASA's Terra satellite and meteorological analyses to calculate energy trapped by clouds as climate varied over the last decade.
A NASA computer modeling effort found that increased plant growth in a world with doubled atmospheric carbon dioxide levels could create a cooling effect, reducing future global warming. The model predicts a -0.3 degrees Celsius globally and -0.6 degrees C over land.