Articles tagged with Climate Sensitivity
A large region of unusually hot rock deep beneath the Appalachian Mountains in the United States could be linked to Greenland and North America splitting apart 80 million years ago. The 'mantle wave' theory suggests that hot, dense rock slowly peels away from the base of tectonic plates after continents break apart.
A team of scientists has developed a high-resolution climate model that simulates global climate change at 9 km atmospheric and 4-25 km oceanic scales. The model demonstrates superior performance compared to lower-resolution models, providing detailed regional insights into future climate conditions.
A recent study found that the 2014-2016 Northeast Pacific marine heatwave caused unprecedented ecological disturbance, resulting in widespread kelp and seagrass declines and mass mortality events. The research highlights cascading impacts on species interactions, plankton communities, and offshore ocean productivity.
A new study found that a wildfire and drought led to an increase in jaguar population density in the Brazilian wetlands. The site, which is home to a unique population of jaguars with aquatic diets, may serve as a climate refuge, buffering extreme climate events.
A new study finds that cleaner air in East Asia, particularly China, has contributed to the recent acceleration in global warming. The region's aerosol reductions account for most of the observed warming since 2010, even after accounting for natural fluctuation events.
A new study by researchers at the University of Kansas finds that cities with proactive, learning-oriented and risk-tolerant governance styles are more likely to implement ambitious climate resilience strategies. These cities are better positioned to protect their communities and lead meaningful change in an era of mounting climate risks.
A new study from Tulane University reveals that parts of New Orleans are sinking at an alarming rate, with some areas experiencing up to 2 inches of elevation loss annually. The findings highlight the need for ongoing monitoring and maintenance to ensure the city's flood defenses remain effective.
A team of researchers has revealed how unique native plant life on the Qinghai-Tibet Plateau evolved over time, with origins dating back to the Early Eocene. The study highlights the Hengduan Mountains as a crucial center of endemism and emphasizes the need for conservation efforts.
A recent study recommends improving climate adaptation programs by enhancing capacity building efforts within governments, economic sectors, and communities. This approach aims to create enabling environments for finance to be impactful, focusing on regional circumstances and stakeholder involvement.
The study found that the remaining carbon budget for 1.5°C is 130 billion tonnes of CO2, which would be depleted in less than three years at current emission rates. This would lead to catastrophic climate impacts and exceed the carbon budget for 1.6°C or 1.7°C within nine years.
A study by Florida Atlantic University reveals that climate shifts starting around 500 A.D. led to shorter lives and faster growth in bald cypress trees, which may have made them more vulnerable to stress. The research provides a powerful lens into how widespread environmental changes can be.
The Global Declaration of Commitment for Scientific Ocean Drilling aims to promote global cooperation and collaboration in ocean science. The declaration sets out core principles for transparent access to data and samples, inclusive participation, environmental responsibility, and alignment with the UN SDGs.
A study by Göttingen University researchers combined satellite data with manual measurements to better understand forest soil moisture. The findings show that soil moisture is strongly influenced by weather and season, not exact location, and highlight the importance of monitoring soil moisture over time for effective forest management.
A new study has uncovered previously hidden patterns of plankton adaptation in response to environmental changes. The analysis showed that plankton lipid profiles are closely linked to their environment, with adaptations including shortening fatty acid chains in cold polar oceans.
A new study suggests that limiting global temperature increase to 1.5°C may not be enough to save the world's ice sheets, which could lead to significant losses and extensive displacement of coastal populations. The researchers argue that a target of around 1°C would be more effective in preventing rapid sea level rise.
A new study finds that global heating could exceed previous estimates, with even low emission scenarios leading to higher temperatures. The Paris Agreement's goal of limiting warming to 2°C may only be achievable under very low emissions and lower-than-estimated climate sensitivity.
A global survey of over 30,000 people found that those from the Global South are more hopeful about climate change, leading to increased support for climate interventions. Meanwhile, European countries express strong anger and sadness towards climate change, highlighting the need for diverse perspectives in addressing the crisis.
A new study suggests that up to 70% of suitable habitats for the critically endangered whitefin swellshark will be lost over the next 75 years due to predicted ocean changes. The researchers believe that Australia's proactive conservation measures, such as marine protected areas, offer hope for the species' survival.
The study highlights the potential of novel techniques to collect and analyse plankton data more efficiently, filling knowledge gaps and generating complete pictures of plankton dynamics. However, integrating old and new methods is crucial to ensure accurate assessments of marine biodiversity.
The 105th Annual Meeting of the American Meteorological Society will address key issues in weather, water, and climate. The meeting features a Presidential Forum on physical, social, cultural, and economic impacts of climate change, with experts from the region of the Mississippi River Delta.
Marine plankton's ability to absorb CO2 is influenced by ocean density, with denser waters leading to reduced calcification and increased alkalinity. This discovery reframes our understanding of the complex interplay between marine life and the global climate system.
Scientists from the University of East Anglia have discovered a 50-metre-thick 'intrusion' of warm water under the Ross Ice Shelf, which has increased heat transport into the cavity by 45% over the last four decades. This finding suggests that climate change will likely lead to further melting and ice loss.
A new study found that extreme heat increases mortality risk for people experiencing homelessness, particularly in hot-climate US counties like Las Vegas and Los Angeles. Heat exposure is estimated to be 10-100 times greater among unhoused individuals than in the general population.
Researchers developed a rating system to evaluate climate model plausibility, finding that a third of models fail to reproduce sea surface temperature data. Carbon-sensitive models, which predict stronger heating than the IPCC estimate, are deemed plausible and warrant serious consideration.
Researchers found that rising temperatures accelerate weathering of rocks in the Canadian Arctic, leading to increased CO2 release and a positive feedback loop. This process could contribute significantly to climate change, with predicted emissions doubling by 2100 under moderate emission scenarios.
Researchers investigate how pollutants affect pollinators' ability to recognize flower scents and how neural circuits adapt to temperature fluctuations in organisms like the roundworm. The study focuses on understanding resilience mechanisms that enable animals to cope with environmental changes.
A team of researchers discovered that a 'tag-team' between the oceans and continents led to severe environmental crises, causing mass extinctions of marine species. The study found that chemical weathering pulses disrupted the oceans, leading to anoxic events that had profound impacts on marine ecosystems.
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 research team finds that local community members are indispensable partners in enhancing community engagement in repairing damaged ecosystems. Local values and attitudes play a crucial role in promoting sustainable ecosystem management practices.
Researchers study droughts, wildfires, and precipitation changes across the US Southeast and globally. The Great Salt Lake's drying exacerbates regional droughts, while a Maui wildfire is linked to atmospheric patterns.
Nitrous-oxide emissions have increased by 40% over the past four decades, resulting in accelerating atmospheric accumulation of this potent greenhouse gas. Agricultural production is the largest source of emissions, and improving practices can help reduce nitrous-oxide emissions and water pollution.
A study by Yuxin Zhou of UC Santa Barbara's Department of Earth Science found that Greenland's ice sheet retreat is not sufficient to completely derail the Atlantic circulation. The AMOC will be determined by a tug-of-war between decreasing ice flux and increasing freshwater runoff, which can disrupt the ocean current.
A new study finds that the US Drought Monitor is not keeping pace with climate change, leading to frequent severe droughts being classified as rare. The consequences are dire, with some regions spending more time in extreme drought conditions than federal guidelines allow, potentially leaving them without adequate aid.
Researchers from the University of Copenhagen discovered that a biological mechanism called autophagy plays a key role in plant root growth. By understanding how plants control their root growth, scientists can develop climate-resilient crops to thrive in harsh conditions.
Fireflies are sensitive to environmental factors such as temperature and precipitation, with changing climatic trends impacting breeding cycles and habitat quality. Urban growth and light pollution also pose significant threats, while certain agricultural practices can support firefly populations.
Researchers analyzed the last ice age to better understand the relationship between CO2 and global temperature. The study finds that the absolute worst-case scenario is unlikely, reducing the estimated warming from doubling CO2 by a full degree.
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 global study led by Colorado State University scientists shows that extreme drought has been greatly underestimated for grasslands and shrublands. The study found that the loss of aboveground plant growth was 60% greater when short-term drought was extreme, exceeding previously reported losses.
A recent study explores the complex links between surface temperature and outgoing longwave radiation, uncovering hidden mechanisms shaping Earth's climate. The research reveals that vertical convective energy transport acts as an atmospheric mixer, suppressing nonlinearity between OLR and surface temperature.
Researchers from Xi'an Jiaotong-Liverpool University developed a system to assess water quality challenges in Suzhou, China. The study found that the city's water capacity has increased since 2001 due to effective water management measures.
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 at the University of Houston have discovered that microalgae can be used to sequester carbon dioxide and convert it into mass-produced proteins, lipids, and carbohydrates. This process has the potential to transform food production, treat wastewater, and produce sustainable biofuels.
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 study reveals that cattle stock tanks can provide crucial water sources for raptors in the Southwestern US, helping them cope with heat stress. The research found that these tanks are used by various raptor species, including barn owls and Swainson's hawks, to drink and bathe.
A new study reveals that large portions of Greenland were ice-free tundra landscapes with trees and woolly mammoths 416,000 years ago. The melting caused at least five feet of sea level rise during a moderate warming period.
A recent study found that warming in Northern ecosystems leads to a massive loss of carbon in the soil, with up to 40% released into the atmosphere within years after warming. The research team also discovered that plant productivity becomes nitrogen limited under warming conditions, reducing the ecosystem's ability to store carbon.
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.
A new MIT study reveals that smoke particles from Australian wildfires can trigger chemical reactions that erode the protective ozone layer. The research found a 3-5% depletion of total ozone at mid-latitudes and widened the Antarctic ozone hole by 10% in 2020.
Researchers warn that commonly used methods for estimating equilibrium climate sensitivity in complex climate models may be underestimating temperature rise. The study highlights the need for longer simulations to account for potential late tipping points, which could significantly influence global warming.
The study found that fact-checkers in the US primarily assessed existence claims, while Australians focused on solutions. Effective fact-checking presentations included visual information, concise summaries, and clear verdicts. Researchers hope to expand their research to cover the role of fact-checking in COVID-19 and other topics.
Researchers analyzed observational data from a major field campaign in 2020 and found that trade-wind clouds' contribution to climate warming has been overestimated. The study shows that the clouds are more resilient to global warming than previously thought, which can improve the accuracy of future climate projections.
A new study models likely future cliff retreat rates of two rock coasts in the UK, finding that rock coasts are likely to retreat at a rate not seen for 3,000-5,000 years. The researchers predict that rock coast cliffs will retreat by at least 10-22 meters inland due to accelerating sea level rise.
A new study reveals that global warming can lead to an exponential increase in heat injury accumulation for ectothermic organisms, with temperatures exceeding their tolerance level resulting in severe injuries. The rate of heat injury doubles for each degree the temperature rises.
A new system classifies atmospheres of distant planets to identify those suitable for future human habitation, without physically visiting them. The research study found that planet TRAPPIST-1e has a significantly more sensitive atmosphere than Earth, which could lead to extreme climate changes.
A global survey of biodiversity experts finds that more species are threatened with extinction than previously thought, with estimates suggesting 30% of species have been lost since 1500. The study identifies climate change, pollution, and land-use changes as key drivers of biodiversity loss.
A recent NTU Singapore study finds that climate change is a stronger driver of increasing atmospheric methane than expected, leading to more heat being trapped in the atmosphere. The research suggests that nature could be producing more and consuming less methane than previously realized, contributing to higher methane emissions.
A recent study reveals that climate change has driven shifts in European grain production, with Eastern Europe taking on a greater role. The shift is attributed to technological advancements and global climate change, which have increased crop yields in the region.
A long-term international study found tropical tree mortality has doubled in Australia's rainforests over the past 35 years, with average tree death rates increasing by half. The research suggests the main driver is the increasing drying power of the atmosphere due to global warming.
The world's ocean is losing its year-to-year memory due to global warming, making it harder to predict ocean conditions. This decline in ocean memory will have significant impacts on fisheries management, population estimates, and land-based weather forecasts.
A new study projects that climate change will more than double the frequency of intense tropical cyclones globally by 2050, increasing maximum wind speeds by up to 20%. This will disproportionately affect low-income countries and regions that are not currently prone to these events.