A global reduction in sulfur pollution from shipping that has inadvertently contributed to recent warming of the Earth is providing insights into the challenge of evaluating marine cloud brightening.

NOAA’s newest hurricane model, the Hurricane Analysis and Forecast System (HAFS), advanced the accuracy of hurricane forecasts and supported community preparedness actions during the 2024 Atlantic hurricane season.

New research confirms that, even as the Arctic warms faster than the rest of the world, cold-air outbreaks from the polar region will continue across the Northern Hemisphere in the coming decades.

Earth had its warmest year on record, while upper-ocean heat content also experienced a record high.

With Hurricane Helene at the top of the list, there were 27 disasters in the United States in 2024 that individually cost $1 billion or more. It was the second-highest number since the NOAA record began in 1980.

After a long wait, La Niña conditions developed in December. What makes this La Niña unusual?

Is the polar vortex to blame for this recent cold air outbreak? We don’t think so. This seems like a case of the polar vortex getting blamed for being a trouble maker, when it was actually minding its own business.

Models and other forecasting tools favor a warm West/cool East temperature split in January along with a wet Northwest/dry Southwest precipitation split.

NOAA and the University Corporation for Atmospheric Research (UCAR)offsite link acting on behalf of the National Science Foundation National Center for Atmospheric Research (NSF NCAR)offsite link sign ...

Through partnerships with private-industry cruiseliners, cargo vessels, sailboats, and moorings, the Ships of Opportunity Program enables researchers to track the global ocean’s uptake of carbon.