University of California, Los Angeles (UCLA)

Higher temperatures can cause droughts even with normal precipitationHigher temperatures caused by anthropogenic climate change made an ordinary drought into an exceptional drought that parched the American West from 2020-2022, according to a new study by scientists from the University of California, Los Angeles (UCLA), NOAA’s National Integrated Drought Information System (NIDIS), and the

This news story was based on an article originally published by the University of California Merced.Drought recovery isn't only important for human water users. For example, migrating birds depend on being able to locate the same sources of water year after year to survive on their long journeys.A new study, published in Nature Communications: Earth & Environment, found climate

Today, the NOAA Climate Program Office’s National Integrated Drought Information System (NIDIS) and Modeling, Analysis, Predictions and Projections (MAPP) program jointly announced $4.9 million in funding for NOAA labs and research partners to improve drought monitoring and prediction in the American West. This research combines $3.1 million in funding from NIDIS and $1.8 million from the

Arid and semi-arid areas may face especially high risks of extreme heat and fire.The laws of thermodynamics dictate that a warmer atmosphere can hold more water vapor, but new research has found that atmospheric moisture has not increased as expected over arid and semi-arid regions of the world as the climate has warmed.The findings are particularly puzzling because climate models have been

Record-breaking forest fires during California’s summer months have become a regular occurrence. Wildfires not only cause catastrophic environmental and socioeconomic impacts, but also have negative consequences for human health. Environmental observations indicate that summer burned areas in northern and central California have increased fivefold during 1996 to 2021 compared to 1971 to 1995.

Although numerous studies have previously explored streamflow responses to annual climate warming, less attention has been given to the differing effects of seasonal (winter vs. summer) warming. It is well-known, for instance, that the seasonal timing of streamflow in snow-affected river basins is strongly affected by warmer winters, which lead to less snow, more rain, and earlier runoff. What

Although wildfire is part of the natural ecosystem cycle over the western U.S., its intensity and frequency has been increasing at an alarming rate in recent decades. A new study shows that climate change is the main driver of this increase in fire weather in the western United States. And even though wetter and cooler conditions could offer brief respites, more intense and frequent wildfires and

Since early 2020, the Southwest United States has suffered record low precipitation and near-record high temperatures, gripping the region with an unyielding, unprecedented, and costly drought. This exceptional drought—marked by massive water shortages, destructive wildfires, emergency declarations, and the first ever water delivery shortfall among the states sharing the Colorado River—punctuates