An international team of weather and climate experts known as the “World Weather Attribution” project has analyzed the late June heatwave in the U.S. Pacific Northwest and come to a preliminary conclusion that the event was a roughly 1-in-1,000-year event in today’s climate. (The results are preliminary because, while the methods the experts used have been applied to many other published studies like this, this specific analysis has not yet been formally reviewed by other experts.) If they are correct, it would have been at least 150 times rarer before global warming. Theoretically, a 1-in-150,000-year event—so rare, they concluded, that it’s fair to say it would have been “virtually impossible” in pre-industrial times. Taken at face value, it would also mean that events like that aren’t about to become common any time soon.
The Little Rocky Mountains in Montana form an island range in a sea of prairie. As a result of their isolation, they are home to plant and wildlife species that are not found anywhere nearby, leaving them especially vulnerable to climate change impacts. In the shadow of the Little Rockies, the Aaniiih and Nakoda peoples of the Fort Belknap Indian Community are taking a bold stand to protect this mountain ecosystem to help preserve their traditional ways of life. The Center is supporting this effort by assisting them in restoring forest health and planning for a rapidly changing climate.
“A picture is worth a thousand words,” so the saying goes. Scientists with the Agricultural Research Service (ARS) Southwest Watershed Research Center in Tucson, AZ, took that saying to heart when they embarked on a project a decade ago to photograph the effectiveness of an ancient erosion-control technique.
Greenhouse gases from human activities are the most significant driver of observed climate change since the mid-20th century.1 The indicators in this chapter characterize emissions of the major greenhouse gases resulting from human activities, the concentrations of these gases in the atmosphere, and how emissions and concentrations have changed over time. When comparing emissions of different gases, these indicators use a concept called “global warming potential” to convert amounts of other gases into carbon dioxide equivalents.
In the mid-2030s, every U.S. coast will experience rapidly increasing high-tide floods, when a lunar cycle will amplify rising sea levels caused by climate change.
High-tide floods – also called nuisance floods or sunny day floods – are already a familiar problem in many cities on the U.S. Atlantic and Gulf coasts. The National Oceanic and Atmospheric Administration (NOAA) reported a total of more than 600 such floods in 2019. Starting in the mid-2030s, however, the alignment of rising sea levels with a lunar cycle will cause coastal cities all around the U.S. to begin a decade of dramatic increases in flood numbers, according to the first study that takes into account all known oceanic and astronomical causes for floods.
If the melting power cables in Portland, Oregon, weren't enough of an indication, new satellite data confirms what many sweat-drenched Americans could have guessed: June 2021 was the single hottest June on record in North America.
As a result of harsh drought conditions in California in 2021, the U.S. Energy Information Administration expects the state’s hydroelectric generation to be lower in 2021 than it has been in recent years.
Yesterday, the U.S. Department of Energy (DOE) announced $52.5 million to fund 31 projects to advance next-generation clean hydrogen technologies and support DOE’s recently announced Hydrogen Energy Earthshot initiative. The first Earthshot, Hydrogen Shot, which was launched one month ago, seeks to reduce the cost of clean hydrogen by 80% to $1 per 1 kilogram in 1 decade (1 1 1).
Forests absorb huge amounts of carbon dioxide (CO2) from Earth's atmosphere, making them a key part of mitigating climate change. But humans may have already rendered the world's largest rainforest useless in — and perhaps even detrimental to — the battle against greenhouse gases, a new study finds.
Earth is said to be in a perfect "Goldilocks zone" away from the sun (not too cold, and not too hot), which enables life to thrive on the planet's surface. But Earth's balmy temperatures would not be possible without the greenhouse effect, which traps solar energy on Earth's surface and keeps the planet warm.