Articles tagged with Global Temperature
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A new study reveals that Earth's surface temperature has varied more greatly over the past 485 million years than previously thought. The study, co-led by the Smithsonian and University of Arizona, confirms that carbon dioxide is strongly correlated with global temperatures across geological time.
A new reconstruction of Earth's temperature history over the past 485 million years reveals a wider range of climate variability than previously understood. The study suggests that atmospheric carbon dioxide has been the primary driver of climate changes during this period, with temperatures varying more dynamically than thought.
A new study finds that future climate change may reduce the Amazon's ability to act as a carbon sink by making it drier and hotter. The Amazon rainforest's carbon storage capacity is threatened by increased frequency and severity of droughts and heat extremes.
A coral colony from Fiji has provided a new record of sea surface temperatures in the southwestern Pacific, revealing that 2022 was the warmest year in over 600 years. The reconstruction uses data from the giant coral Diploastrea heliopora, which records long-term climatic and environmental changes.
A new AI approach accurately links heat waves to global warming, estimating that record-setting heat waves could occur multiple times per decade under higher warming levels. The method uses actual historical weather data and machine learning to predict the magnitude of extreme events.
A new study led by Dartmouth researchers questions the rapid polar ice collapse model used in the IPCC's sixth assessment report. The team found that the expected rate of retreat is significantly lower than predicted, making the worst-case scenario less likely, but still dire due to ongoing ice loss from Greenland and Antarctica.
A recent study by Stockholm University reveals that warming temperatures can speed up carbon dioxide emissions from ecosystems, but only if the environment is sufficiently moist. This finding highlights the critical role of water in the feedback loop between temperature and ecosystem metabolism.
Researchers investigated the thermal environments of various tennis court surfaces, revealing significant differences in wet-bulb globe temperature (WGBT) values. The study suggests that on-site WBGT measurements are crucial for effective heat management in sports, and organizers should consider reducing match frequency in hot conditions.
Researchers from UNIGE have measured the increase in soil erosion caused by global warming, with a four-fold increase observed in sediments from the Paleocene-Eocene Thermal Maximum. This study suggests that current warming could lead to similar effects, increasing flood risks and threatening populated areas.
Human-induced global warming has risen to 1.19 °C over the past decade, with the remaining carbon budget estimated to be around 200 gigatonnes, down from 300-900 gigatonnes in 2020. The report highlights the need for rapid emission reductions and resilient societies to mitigate climate change.
A research team at Kyoto University has developed an AI method to automatically detect methane emissions globally, resolving trade-offs with existing detection methods. The system can identify small methane plumes, paving the way for systematic quantification of global warming.
A team of researchers found that the current rate of atmospheric carbon dioxide increase is 10 times faster than at any other point in the past 50,000 years. The study provides new insight into abrupt climate change periods and potential impacts of climate change today.
The study reveals that coral reefs are suffering from widespread bleaching and deaths, with the highest temperatures recorded in 175 countries. The researchers found that heat transport from the tropics to the polar regions has accelerated, causing sea surface temperature increases and exacerbating global warming feedbacks.
Climate change causes melting of ice sheet, resulting in loss of about 5,000 meteorites per year. Researchers call for urgent action to preserve the scientific value of meteorites and reduce greenhouse gas emissions.
Researchers developed a model predicting how changes in anvil cloud area affect global warming, confirming its effectiveness and reducing uncertainty. However, the brightness of clouds remains understudied and is a key obstacle to predicting future global warming.
A new measure called “outdoor days” describes the number of days per year that outdoor temperatures are neither too hot nor too cold for people to go about normal outdoor activities. This measure reveals significant global disparities, with the North gaining more outdoor days and the South losing them due to rising temperatures.
A new study finds that climate change will further exacerbate projected economic losses from global warming when its impact on global supply chains is factored in. By 2060, total GDP losses could amount to between $3.75 trillion and $24.7 trillion, with supply chain disruptions accounting for a significant proportion of these losses.
The 2023-24 El Niño phenomenon is likely to cause record-breaking average surface air temperatures in some areas, including the Bay of Bengal and the Philippines. Global mean surface temperatures are predicted to break historical records with a 90% chance under a moderate or strong El Niño scenario.
A recent study found that rapidly intensifying tropical cyclones (RI) are already more hazardous than normal TCs and will worsen coastal flooding under future climate warming. RI events may increase by 10-30% for each degree of global mean temperature increase, posing a significant threat to coastal communities.
A study of 82,000 patients found a strong association between hourly heat exposure and the onset of acute ischemic stroke. The findings suggest that high ambient temperatures may contribute to an increased risk of cerebrovascular events under global warming.
A study predicts African great apes will experience more wildfires and flooding due to climate change. Temperatures are projected to increase at all sites, with frequent heatwaves and crop failures anticipated under a 2°C warming scenario.
The tawny owl's pale grey plumage is linked to crucial functions aiding survival in cold environments, including energy homeostasis and fat deposition. Genetic analysis reveals a 70-100% accuracy in predicting grey coloration through specific genetic variants.
A recent Harvard University study found that soil moisture increased across 57% of the US during summer between 2011-2020, contradicting the assumption that rising temperatures lead to drier soils. Precipitation, rather than temperature, is the primary driver of soil moisture trends.
New research reveals permafrost's dominant role in shaping Arctic rivers and storing massive amounts of carbon. Thawing permafrost could unleash billions of tons of CO2, exacerbating climate change.
A recent study reveals a shift in global warming dynamics, with greater daytime warming since the 1990s. This has led to an increasing temperature difference between day and night, which could affect crop yields, animal well-being, and human health.
Researchers uncover key mechanisms behind 2021's Pacific Northwest 'Heat Dome', attributing it to human-caused warming and natural systems. The study reveals the interplay between atmospheric dynamics, soil moisture, and climate change shapes extreme weather conditions.
A new Dartmouth study finds that seasonal snowpacks have shrunk significantly over the past 40 years due to human-driven climate change. The sharpest global warming-related reductions are in the Southwestern and Northeastern United States, as well as in Central and Eastern Europe.
Researchers at UH are expanding research knowledge and building a new curriculum for students to address climate change impacts on food crops. They aim to improve plant growth and build resistance against extreme weather events, such as droughts and heat waves.
Scientists simulated the runaway greenhouse effect, transforming habitable climates into hostile environments, with significant changes in atmospheric structure and cloud coverage. The study provides key insights for the search of life elsewhere, as it demonstrates a critical water vapor threshold beyond which a planet cannot cool down.
Researchers discovered that rising temperatures trigger katabatic winds in Himalayan glaciers, cooling the air and preserving surrounding ecosystems. The team used climate models to demonstrate this phenomenon across the Himalayan range, suggesting that some glaciers may have a chance to 'save' themselves by reacting to global warming.
The Institute of Atmospheric Physics predicts a potentially record-breaking winter due to the convergence of global warming and the El Niño phenomenon. Regions in mid-low latitudes of Eurasia and Americas are likely to experience an exceptionally warm winter, with a 95% chance of setting a new historical record.
Researchers propose a new approach to measure global warming, combining the last ten years of temperature observations with projections for the next decade. The current level of global warming is around 1.26°C, with an uncertainty range of 1.13°C to 1.43°C.
A new study maps uncertainty in current climate modeling and proposes a framework to better predict future global warming risk. International experts identify 26 distinct processes that could drive significant warming after net zero.
A new modelling study led by UCL researchers finds that faster Arctic warming will breach the global 1.5C and 2C temperature thresholds five and eight years earlier than expected. This accelerated warming adds substantial uncertainty to climate forecasts, highlighting the need for more extensive monitoring of temperatures in the region.
Researchers found that green spaces alleviate extreme heat's negative impacts on human health, while densely packed buildings increase mortality risk. Urban design strategies incorporating different types of greenery are recommended to mitigate heatwave-associated mortality.
Researchers have reconstructed a global history of water over the past 2,000 years, showing that the global water cycle has changed during periods of higher and lower temperatures. The study found that when global temperature is higher, rain and other environmental waters become more isotopically heavy.
A new study finds that the global carbon budget for keeping warming below 1.5°C will be exhausted by 2029 if current emissions continue, committing the world to this level of warming. The remaining budget has approximately halved since 2020 due to increased greenhouse gas emissions.
Researchers predict that 76% of newly suitable land at high latitudes is currently wilderness, equivalent to 10% of the total wilderness in these areas. As global temperatures rise, wilderness areas may be significantly harmed by agricultural expansion.
Researchers found that reversing current warming trend within centuries may prevent ice sheet tipping. However, temporary overshooting can still lead to significant sea-level rise. The study suggests that acting fast and keeping temperatures below 1.5 degrees Celsius is crucial.
Uncontrolled wildfires are threatening environmental progress in Brazilian Amazonia, a critical carbon sink. Deforestation rates have fallen, but fire counts remain high, driven by hotter and drier climate conditions.
A study by the University of Exeter found that hot weather reduces workers' productivity even in climate-controlled factories. Productivity dropped by 0.83% for every 1°C increase in outdoor temperature, resulting in a worker producing 22.6 to 33.4 fewer wafers.
A new study reveals that Atlantic walrus populations are highly fragmented due to climate-driven genetic separation, making them more vulnerable to extinction. Human activities such as hunting, commercial exploitation, and resource extraction further exacerbate this vulnerability.
Global temperatures are projected to reach unprecedented highs in 2023 due to factors such as El Niño and widespread wildfires. The China Global Merged Surface Temperature dataset 2.0 reveals that the year is expected to be the hottest on record, with global mean sea surface temperatures and land air temperatures reaching all-time highs.
The State of the Climate report confirms record highs in greenhouse gas concentrations, global sea levels, and ocean heat content. Scientists from over 60 countries contributed to the annual review, providing a comprehensive update on Earth's climate indicators and notable weather events.
A new study from the University of Massachusetts Amherst found that the wealthiest 10% of Americans are responsible for 40% of the nation's total greenhouse gas emissions. The study suggests that policymakers adopt taxes focused on shareholders and the carbon intensity of investment incomes to equitably meet climate goals.
A new study by Simon Fraser University researchers highlights the urgent need for immediate methane emission reductions to meet global climate change goals. Delaying efforts will increase the risk of exceeding the 2°C temperature limit, even if CO2 emissions are reduced to net-zero.
Sediments from the Camp Century ice core show northwestern Greenland was ice-free during MIS 11 interglacial period. This finding indicates the Greenland Ice Sheet contributed to 1.4 meters of sea-level equivalent to global sea level during this time.
A recent study published in PNAS found that global cooling is the major driving factor behind the diversification of terrestrial orchid species. The research analyzed over 1,500 species and discovered that most new species emerged within the last 10 million years, coinciding with global cooling trends.
Climate change is shifting snowfall to rainfall on mountains across the Northern Hemisphere, increasing the risk of floods, landslides, and soil erosion. The study found that for every 1 degree Celsius increase in global temperature, high elevations can expect an average of 15% more rain.
Researchers found that volcanic eruptions' impact on climate is being underestimated by a factor of two to four in standard climate projections. Small-magnitude eruptions are responsible for as much as half of all sulphur gases emitted, with a significant collective effect.
Research suggests climate change will impact insect biodiversity by throwing off the delicate balance between species that rely on each other for survival. As temperatures rise, insect life cycles may become out of sync with their host plants, leading to potential extinction.
Researchers develop new approach to quantify respiration and its temperature sensitivity in terrestrial ecosystems. Their findings suggest lower temperature sensitivities than previously thought, but caution that natural components alone cannot mitigate climate change.
Human-induced warming has increased at an 'unprecedented rate' since the last major assessment, with greenhouse gas emissions reaching a record level. The remaining carbon budget has halved over three years, highlighting the urgent need for policymakers and climate experts to access up-to-date scientific evidence.
A new species of dinosaur, Iani smithi, has been discovered in Utah's Cedar Mountain Formation, providing insights into how dinosaurs weathered ecological change during the mid-Cretaceous period. The discovery suggests that several major groups of dinosaurs survived into the early Late Cretaceous despite the changes.
Unseasonably warm and cold days prolong moth and butterfly activity by nearly a month, according to the study. Insect lifespans may also be affected, potentially leading to increased pathogen transmission.
A new study from Tufts University predicts a significant increase in extreme temperatures affecting wheat yields in the US and China. The research warns of potentially disastrous consequences for global food supplies if crops are impacted by heat stress, which can occur at temperatures above 27.8°C.
A new study published in European Journal of Preventive Cardiology reveals that non-optimal temperatures have a significant impact on global cardiovascular disease burden, contributing to nearly 1.2 million CVD deaths and 22 million disability-adjusted life years (DALYs) annually.
A new Dartmouth study examines how changes in precipitation and temperature due to global warming affect streamflow and flooding in the Northeast. The research finds that a warmer climate will lead to increased streamflow and higher flood risk, particularly if soils become wetter and more prone to heavy rainfall events.
A Dartmouth College study found that more than 500 home runs since 2010 can be attributed to higher-than-average temperatures due to climate change. Rising temperatures could account for 10% or more of home runs by 2100, with some stadiums experiencing significant spikes in home run totals.
A study by Beth Israel Deaconess Medical Center found that climate change-related natural disasters have increased since 1980 and cost the US over $2 trillion in recovery costs. The analysis suggests that rising CO2 levels and temperatures will lead to more frequent and severe disasters, with exponentially increasing costs.