Climate change

Wildfire blowups, fire whirls, towering thunderstorms: When fires get large and hot enough, they can actually create their own weather. In these extreme fire situations, firefighters’ ordinary methods to directly control the fire don’t work, and wildfires burn out of control. But how can a fire create weather? Satellite images show how the Park Fire near Chico, Calif., created intense pyrocumulonimbus plumes, visible in white, in July 2024. CSU/CIRA and NOAA I’m an atmospheric scientist who uses data collected by satellites in weather prediction models to better anticipate extreme fire weather phenomena. Satellite data shows fire-produced thunderstorms are much more common than anyone realized just a few years ago. Here’s what’s happening. The wildfire and weather connections Imagine a wildland landscape with dry grasses, brush and trees. A spark lands, perhaps from...

You probably have been hearing phrases like “climate crisis,” “climate emergency” or “climate justice” more often lately as people try to get across the urgent risks and consequences of climate change. The danger is real, but is using this language actually persuasive? It turns out that Americans are more familiar with – and more concerned about – climate change and global warming than they are about climate crisis, climate emergency or climate justice, according to a recent survey we conducted with a nationally representative sample of 5,137 Americans. Moreover, we found no evidence that the alternative terms increased people’s sense of urgency, willingness to support climate-friendly policies or willingness to act. The familiar terms – climate change and global warming – did at least as well, and sometimes better, than climate crisis and climate emergency in eliciting concern, perceived urgency and willingness...

Most Americans will remember 2020 as the year when the pandemic changed everything. But for Lake Charles, Louisiana, and its neighbors along the Gulf Coast, it was also the year of record-setting disasters, when “once-in-a-lifetime” storms hit in such rapid succession that their impacts blurred together. A recent National Academies consensus study I worked on looked into the compounding disasters that the region faced – both physical and socioeconomic – as storm after storm arrived during the pandemic with little time for recovery. It concludes that Lake Charles’ experiences could be a harbinger of what’s to come in a warming world unless the nation fundamentally rethinks its disaster preparedness, response and recovery strategies. Lake Charles’ compounding disasters Hurricane Laura made landfall near Lake Charles on Aug. 27, 2020, as a powerful Category 4 storm, with wind speeds exceeding those that local building codes were designed...

As humans alter the planet’s climate and ecosystems, scientists are looking to Earth’s history to help predict what may unfold from climate change. To this end, massive ice structures like glaciers serve as nature’s freezers, archiving detailed records of past climates and ecosystems – including viruses. We are a team of microbiologists and paleoclimatologists that studies ancient microorganisms, including viruses preserved within glacier ice. Along with our colleagues Lonnie Thompson, Virginia Rich and other researchers at the Ice Core Paleoclimatology group at The Ohio State University, we investigate interactions between viruses and their environment archived in ice cores from the Guliya Glacier on the Tibetan Plateau. By linking the genomes of ancient viral communities to specific climate conditions preserved in glacier ice, our newly published research offers insights into how these viruses have adapted to Earth’s shifting climate over the pas...

The North Atlantic Ocean has been running a fever for months, with surface temperatures at or near record highs. But cooling along the equator in both the Atlantic and eastern Pacific may finally be starting to bring some relief, particularly for vulnerable coral reef ecosystems. This cooling comes from two climate phenomena with similar names: La Niña, which forms in the tropical Pacific, and the less well-known Atlantic Niña. Both can affect the Atlantic hurricane season. While La Niña tends to bring conditions ideal for Atlantic hurricanes, the less powerful Atlantic Niña has the potential to reduce some of the hurricane risk. Cooling in the tropical Atlantic along the equator is a sign an Atlantic Niña may be forming. NOAA Climate.gov We’re ocean and atmospheric scientists who study this type of climate phenomenon. It’s rare to see both Niñas at the same...