Scientists Identify the Most Extreme Heatwaves Ever Recorded GloballyUniversity of Bristol
A new study has revealed the most intense heatwaves ever across the world – and remarkably some of these went almost unnoticed decades ago.
A new study has revealed the most intense heatwaves ever across the world – and remarkably some of these went almost unnoticed decades ago.
A new study, “Global field observations of tree die-off reveal hotter-drought fingerprint for Earth’s forests,” compiled a global database of the published locations of climate-induced forest die-off events, from 1970-2018, across 675 locations. After analyzing the climate conditions at each location during each event, researchers found a common ‘hotter-drought fingerprint’ for Earth’s forests, a term that describes the combination of higher temperatures and more frequent droughts for a lethal set of climate conditions.
The Arctic is warming along with the rest of the planet, and as this is happening, its permafrost – perennially frozen arctic soil that holds a lot of trapped organic matter from dead plants – is thawing. As the permafrost thaws, the organic matter it holds is thawing, too, and this is opening the door for microorganisms to decompose that matter and, in the process, release climate-warming greenhouse gases like carbon dioxide and methane into the atmosphere.
Climate change could result in the financial toll of flooding rising by more than a quarter in the United States by 2050 – and disadvantaged communities will bear the biggest brunt, according to new research.
A multi-institution research team has discovered a catalyst that converts methane, the primary component of natural gas and a major greenhouse gas, into ethane and ethylene that can be turned into plastics and resins.
Global Temperature Report: November 2021
Changes in the northern Alaskan Arctic ocean environment have reached a point at which a previously rare phenomenon—widespread blooms of toxic algae—could become more commonplace, potentially threatening a wide range of marine wildlife and the people who rely on local marine resources for food. That is the conclusion of a new study about harmful algal blooms (HABs) of the toxic algae Alexandrium catenella being published in the journal Proceedings of the National Academy of Science.
A study recently published in Nature Communications suggests that displacing cold-water communities of algae with warm-adapted ones threatens to destabilize the delicate marine food web. The team was led by University of East Anglia researchers and included DOE Joint Genome Institute researchers.
Greenland may be best known for its enormous continental scale ice sheet that soars up to 3,000 meters above sea level, whose rapid melting is a leading contributor to global sea level rise.
A new study predicts that any sea level rise in the world’s most southern continent will be countered by an increase in snowfall, associated with a warmer Polar atmosphere. Using modern methods to calculate projected changes to sea levels, researchers discovered that the two ice sheets of Greenland and Antarctica respond differently, reflecting their very distinct local climates.
Seeing the urgent need for change, a team of scientists from leading research universities, conservation organizations and government laboratories across the West has produced a synthesis of the scientific literature that clearly lays out the established science and strength of evidence on climate change, wildfire and forest management for seasonally dry forests. The goal is to give land managers and others across the West access to a unified resource that summarizes the best-available science so they can make decisions about how to manage their landscapes.
Woods Hole, MA (August 3, 2021) – A new study published today in Global Change Biology provides valuable new data that highlights how species extinction risk is accelerating due to rapid climate change and an increase in extreme climate events, such as glacial calving and sea ice loss. The study, led by Stephanie Jenouvrier, associate scientist, and seabird ecologist at Woods Hole Oceanographic Institution, and co-authored by an international team of scientists, policy experts, ecologists, and climate scientists, provided pivotal research and projections tailored for use by the U.S Fish & Wildlife Service (USFWS). Their work proposed that emperor penguins be listed as threatened under the Endangered Species Act and this week, USFWS submitted that listing proposal.
Twenty months after more than 11,000 scientists declared a global climate emergency, establishing a set of benchmarks for the planet’s health, an international coalition says its update on those vital signs “largely reflect the consequences of an unrelenting ‘business as usual’ approach to climate change policy”.
Oxygen levels in the world’s temperate freshwater lakes are declining rapidly — faster than in the oceans — a trend driven largely by climate change that threatens freshwater biodiversity and drinking water quality.
New research from Florida State University shows that concentrations of the toxic element mercury in rivers and fjords connected to the Greenland Ice Sheet are comparable to rivers in industrial China, an unexpected finding that is raising questions about the effects of glacial melting in an area that is a major exporter of seafood.
New research by Lawrence Livermore National Laboratory (LLNL) climate scientists and collaborators shows that satellite measurements of the temperature of the troposphere (the lowest region of the atmosphere) may have underestimated global warming over the last 40 years.
New research led by Aalto University assesses just how global food production will be affected if greenhouse gas emissions are left uncut. The study is published in the prestigious journal One Earth on Friday 14 May.
A new analysis of satellite cloud observations finds that global warming causes low-level clouds over the oceans to decrease, leading to further warming. The work, led by researchers at Lawrence Livermore National Laboratory (LLNL), in collaboration with colleagues from Scripps Institution of Oceanography and the NASA Langley Research Center.
Australia's 'black summer' of bushfires was depicted on the front pages of the world's media with images of wildlife and habitat destruction, caused by climate change, while in Australia the toll on ordinary people remained the visual front-page focus.
The Antarctic ice sheet is much less likely to become unstable and cause dramatic sea-level rise in upcoming centuries if the world follows policies that keep global warming below a key 2015 Paris climate agreement target, according to a Rutgers coauthored study. But if global warming exceeds the target – 2 degrees Celsius (3.6 degrees Fahrenheit) – the risk of ice shelves around the ice sheet’s perimeter melting would increase significantly, and their collapse would trigger rapid Antarctic melting. That would result in at least 0.07 inches of global average sea-level rise a year in 2060 and beyond, according to the study in the journal Nature.
Irvine, Calif., April 22, 2021 — California’s wildfire problem, fueled by a concurrence of climate change and a heightened risk of human-caused ignitions in once uninhabited areas, has been getting worse with each passing year of the 21st century. Researchers in the Department of Civil & Environmental Engineering at the University of California, Irvine have conducted a thorough analysis of California Department of Forestry and Fire Protection wildfire statistics from 2000 to 2019, comparing them with data from 1920 to 1999.
Should humans use technology to put the brakes on global warming? Stratospheric aerosol intervention (SAI) is a climate intervention that has been studied as a way to help cool the Earth. But what would be the consequences to natural systems of SAI? This question is being examined by a large scientific research team.
Every year, an estimated four percent of the world's vegetated land surface burns, leaving more than 250 megatons of carbonized plants behind. For the first time, a study by the University of Vienna has now recorded elevated concentrations of environmentally persistent free radicals (EPFR) in these charcoals - in some cases even up to five years after the fire.
Scientists found frozen plant fossils, preserved under a mile of ice on Greenland. The discovery helps confirm a new and troubling understanding that the Greenland Ice Sheet has melted entirely during recent warm periods in Earth’s history—like the one we are now creating with human-caused climate change.
A new study published in Nature Communications suggests that the extinction of North America's largest mammals was not driven by overhunting by rapidly expanding human populations following their entrance into the Americas.
Even if all countries meet their Paris Agreement goals for reducing emissions, Earth has only a 5% chance of staying below 2 C warming this century, a 2017 study showed. But reductions about 80% more ambitious, or an average of 1.8% drop in emissions per year rather than 1% per year, would be enough to meet the agreement's stated goal, analysis shows.
Human-caused warming is responsible for increasing the risk of a glacial outburst flood from Peru’s Lake Palcacocha, threatening the city below. This study is the first to directly link climate change with the risk of flooding from glacial lakes, which are growing in number and size worldwide.
Volcanologists from the University of Georgia and two Swiss universities found a link between carbon dioxide and the volume of gas trapped in magma, which could help predict the intensity and magnitude of a volcanic eruption.
The researchers of the Institute for Atmospheric and Earth system research at the University of Helsinki have investigated how atmospheric particles are formed in the Arctic. Until recent studies, the molecular processes of particle formation in the high Arctic remained a mystery.
Rejoining the Paris Agreement signals that the United States intends to do its part to cut global emissions to reduce future warming and, importantly, to reduce future losses from climate-worsened disasters for all Americans.
Research co-authored by University of California scientists has found that by 2050, as many as 24,500 affordable housing units in the United States are projected to be exposed to coastal flooding.
2020 is the worst fire year on record in the United States. In the face of heartbreaking losses, effort and expense, scientists are still grappling with some of the most basic questions about how fire influences interactions between plants and animals in the natural world. A new study grounded in the northern Rockies explores the role of fire in the finely tuned dance between plants and their pollinators.
Changes in climate can increase infectious disease risk in animals, researchers found — with the possibility that these diseases could spread to humans, they warn.
It was raining iguanas on a sunny morning. Biologist James Stroud’s phone started buzzing early on Jan. 22. A friend who was bicycling to work past the white sands and palm tree edges of Key Biscayne, an island town south of Miami, sent Stroud a picture of a 2-foot-long lizard splayed out on its back. With its feet in the air, the iguana took up most of the sidewalk.
A pioneering technique which captures precisely how mountains bend to the will of raindrops has helped to solve a long-standing scientific enigma.
In a new climate modeling study that looked at the impacts of accelerated ice melt from the Antarctic Ice Sheet (AIS) on future climate, a team of climate scientists reports that future ice-sheet melt is expected to have significant effects on global climate.
Los Alamos National Laboratory, working with three dozen other institutions from around the world, has helped to create the most accurate prediction of how melting ice in Antarctica and Greenland will contribute to global sea-level rise.
Research shows that many marine animals already inhabit the maximum range of breathable ocean that their physiology allows. The findings are a warning about climate change: Since warmer waters harbor less oxygen, stretches of ocean that are breathable today for a species may not be in the future.
Land development in New Jersey has slowed dramatically since the 2008 Great Recession, but it’s unclear how the COVID-19 pandemic and efforts to fight societal and housing inequality will affect future trends, according to a Rutgers co-authored report. Between 2012 and 2015, 10,392 acres in the Garden State became urban land. That’s 3,464 acres a year – far lower than the 16,852 acres per year in the late 1990s and continuing the trend of decreasing urban development that began in the 2008 Great Recession.
Nearly 40 years of satellite data from Greenland shows that glaciers on the island have shrunk so much that even if global warming were to stop today, the ice sheet would continue shrinking.
Thousands of years ago the UK was physically joined to the rest of Europe through an area known as Doggerland. However, a marine inundation took place during the mid-holocene, separating the British landmass from the rest of Europe, which is now covered by the North Sea.
Scientists have filled a gaping hole in the world's climate records by reconstructing 600 years of soil-moisture swings across southern and central South America.
A new Columbia Engineering study demonstrates that even when temperatures warm and cold stress is limited, light is still a major factor in limiting carbon uptake of northern high latitudes. The team analyzed satellite observations, field measurements, and model simulations and showed that there is a prevalent radiation limitation on carbon uptake in northern ecosystems, especially in autumn.
A study of 40 sea ice models finds they all project that the area of sea ice around Antarctica will decrease by 2100, but the amount of loss varies between the emissions scenarios.
In almost every region of the world where hurricanes form, their maximum sustained winds are getting stronger. That is according to a new study by scientists at the National Oceanic and Atmospheric Administration National Center for Environmental Information and University of WisconsinMadison Cooperative Institute for Meteorological Satellite Studies, who analyzed nearly 40 years of hurricane satellite imagery.
As the demand for transportation fuels has plummeted at an unprecedented rate in the last month due to the COVID-19 pandemic, a Northern Arizona University scientist says the dramatic decrease in local air pollution and carbon dioxide (CO2) levels above cities is significant, measurable and could be historic, depending on how long commuters and other drivers stay off the road.
Current marine protected areas in the Southern Ocean need to be at least doubled to adequately safeguard the biodiversity of the Antarctic, according to a new CU Boulder study.
A new Columbia Engineering study shows that increased water stress—higher frequency of drought due to higher temperatures, is going to constrain the phenological cycle: in effect, by shutting down photosynthesis, it will generate a lower carbon uptake at the end of the season, thus contributing to increased global warming.
New international research by Woods Hole Oceanographic Institution (WHOI) and colleagues has found a marked change in the Indian Ocean’s surface temperatures that puts southeast Australia on course for increasingly hot and dry conditions.