News & Features

The COVID-19 pandemic gave scientists an accidental experiment opportunity to monitor and understand the atmospheric response to emission reductions. An international research team combined observations and modeling to assess possible changes.

Scientists led by NOAA published an opinion piece in PNAS on geoengineering through marine cloud brightening (MCB). The piece proposes decarbonizing first, but beginning research on MCB, following six checkpoints.

Does your location usually experience its coldest day of the year in early, mid, or late winter? Find an answer with this map based on weather observations between 1991-2020.

The Marshall Fire was a complex event, with some factors that were probably influenced by human-caused global warming and some that were not.

Demand for actionable scientific information on adaptation and resilience is outpacing supply. Three federal climate science-to-action networks collaborate closely to make relevant scientific information and adaptive management strategies available.

Wildfire smoke is a substantial source of ozone in our lower atmosphere, but one that is hard to quantify. New research investigates ozone chemistry in wildfire plumes using measurements from a flight campaign.

The tropical intraseasonal oscillation (ISO) affects variability over the tropical Indian and Pacific Oceans, and affects ENSO and monsoons, but models struggle to simulate the ISO. New research identifies reanalysis products best suited to studying the ISO.

A new study shows that, on a single day in 2020, more than 68 percent of the U.S. West—representing about 43 million people—were affected by harmful levels of air pollution. It was the highest number of affected people in 20 years. Large wildfires and severe heat events occurring at the same time have worsened air pollution.

La Niña is likely near its peak strength, but that doesn't mean its impacts will disappear anytime soon.

It's been 45 years since the planet had a cooler-than-average year.