Phys.org: Earth science

The Colorado River is a vital source of water in the Western United States, providing drinking water for homes and irrigation for farms in seven states, but the basin is under increasing pressure from climate change and drought. A new computational tool developed by a research team, led by Penn State scientists, may help the region adapt to a complex and uncertain future.

As one of the largest heat reservoirs in the climate system, the global ocean absorbs more than 90% of the excess energy from ongoing anthropogenic warming. In the last century, the greatest warming in the ocean has occurred in the upper 500 m, with relatively weak warming in the deep ocean, corresponding to a small ocean heat storage efficiency of ~0.1.

Nestled in the Uinta Mountains of northern Utah, a series of pristine lakes are facing a new threat—humans. Geography professor and chair Katrina Moser led a team of researchers in the region this summer to better understand how human activity, like agriculture and warming temperatures because of climate change, is leading to dramatic changes in a water system far from populous areas.

The Copernicus Sentinel-2 mission has snapped a souvenir of the Burning Man festival in the Black Rock desert in Nevada.

The tiniest and oldest creatures on—and in—Earth have a huge role in achieving a sustainable future for the planet, an international team of scientists, including faculty researchers from The Ohio State University, asserts in a new Cell article published today.

Just a month after its launch, ESA's Arctic Weather Satellite has already delivered its first images, notably capturing Storm Boris, which has been wreaking havoc across central Europe.

There is a high risk of increased metal emissions from coastal areas in the future. In a new model published in Limnology and Oceanography Letters, researchers from the University of Gothenburg show that climate change and overpopulation can flush out heavy metals that have long been buried in sediments, and where on Earth the risk of this is greatest.

A new study co-led by the Smithsonian and the University of Arizona offers the most detailed glimpse yet of how Earth's surface temperature has changed over the past 485 million years.

Ice may look safe for a game of pick-up hockey on the lake, but as a new study out of York University found, looks can be deceiving. Warming winters are not only affecting ice thickness and timing—when a lake freezes and thaws—but also quality, making it potentially unstable and unsafe.

The summer of 2024 was the hottest on record and, unfortunately, this came as no surprise. Summers have been getting hotter and drier around the world, including in the Northern Hemisphere, leading to intense droughts and heat waves in North America and Europe and posing serious risks to society such as wildfires, crop failures and health hazards.

Some of the most dramatic climatic events in our planet's history are "Snowball Earth" events that happened hundreds of millions of years ago, when almost the entire planet was encased in ice up to 0.6 miles (1 kilometer) thick.

The Amazon, often called the "lungs of the planet," is the world's largest tropical forest, playing a crucial role in the global climate system due to its vast carbon storage. While it is typically warm and humid all year round, continued climate change poses the threat of more frequent and severe droughts and heat extremes.

Climate change is forcing people to adapt to changing environmental conditions. But what really makes the difference is how they do it. The recently published "Hamburg Climate Futures Outlook 2024" by 73 authors shows that, in the long run, only sustainable adaptation can succeed. This global assessment by University of Hamburg's Cluster of Excellence Climate, Climatic Change, and Society (CLICCS) also provides practical recommendations.

Indiana University researchers have uncovered key insights into the dangerous phenomenon of "river avulsion," offering a way to predict when and where rivers may suddenly and dramatically change course. Published in Nature, this breakthrough study sheds light on a process that has shaped human history through devastating floods and continues to threaten millions of people worldwide.

Imagine the conductor of a vast orchestra stood not at the front, but in the middle of all the musicians, dictating how they work together and the music they produce. The musicians are not stationary; they move past each other and interact, but all the while still controlled by the unmoving conductor.

The Arctic frequently experiences temperatures that support the formation of mixed-phase clouds that contain supercooled liquid droplets and ice crystals. The composition of such clouds plays a crucial role in the region's energy balance and climate system. Clouds with more liquid last longer and reflect more sunlight than those with more ice crystals.

Tropical cyclones can have severe consequences for both the marine and terrestrial environments, as well as the organisms and communities who inhabit them. In the oceans, there can be alterations in sea surface temperature that disrupt biological processes and hospitable conditions for life, the devastation of surface algae and other primary producers, which impacts complex marine food chains, as well as damaging coral reefs. Meanwhile, on land, the heavy rainfall, strong winds and storm surges can lead to significant damage to property and infrastructure, as well as loss of lives.

On Sept. 18, 2024, NOAA shared the first images of the Western Hemisphere from its GOES-19 satellite. The satellite's Advanced Baseline Imager (ABI) instrument recently captured stunning views of Earth.

Lavas from hotspots—whether erupting in Hawaii, Samoa or Iceland—likely originate from a worldwide, uniform reservoir in Earth's mantle, according to an evaluation of volcanic hotspots published in Nature Geoscience.

A paper, titled "How local governments avoid floodplain development through consistent implementation of routine municipal ordinances, plans, and programs," published in Oxford Open Climate Change uncovers evidence suggesting that, contrary to expectations, most U.S. cities are not doing too badly in avoiding development in areas prone to flooding, and those that are effective appear to be applying existing tools and strategies well, rather than doing anything particularly novel.