A high-resolution climate model based at NCAR is accurately capturing the ribbons of moist air that sometimes flow out of the tropics toward the drier mid-latitudes, allowing scientists to investigate how the Pineapple Express and similar weather-maker patterns may change as the climate warms.

If society doesn't make steep cuts in greenhouse gas emissions in the next few decades, how much injection into the atmosphere of planet-cooling sulfates would it take to limit warming to 2 degrees Celsius above preindustrial levels?

Greenhouse gases are already having an accelerating effect on sea level rise, but the impact has so far been masked by the cataclysmic 1991 eruption of Mount Pinatubo in the Philippines.

The recent trend of increasing Antarctic sea ice extent — seemingly at odds with climate model projections — can largely be explained by a natural climate fluctuation.

A new study finds that, even if all the countries follow through on their Paris Agreement commitments, steeper emissions cuts would be necessary after 2030 to stay below 2 degrees of warming.