The Montreal Protocol, the international treaty adopted initially to protect and ultimately to heal Earth’s protective ozone layer, has significantly reduced emissions of ozone-depleting chemicals from the United States. But in a twist, a new study by NOAA and CIRES scientists shows the 30-year old treaty has also significantly reduced climate-altering greenhouse gas emissions from the United States.
Ozone Treaty Taking a Bite Out of US Greenhouse Gas Emissions
Soil Doesn’t Forget
Ecologists need to understand what and where soil microbes live in Earth’s ecosystems—these microorganisms can influence what can thrive above. But there’s a gap in the field: Today’s climate conditions do not fully explain the types of microbes they see. So CIRES researchers at the University of Colorado Boulder are looking thousands of years back in time—and they’re finding answers.
Alaska’s North Slope Snow-Free Season is Lengthening
On the North Slope of Alaska, snow is melting earlier in the spring and the snow-in date is happening later in the fall, according to a new study by CIRES and NOAA researchers. Atmospheric dynamics and sea ice conditions are behind this lengthening of the snow-free season, the scientists found, and the consequences are far reaching—including birds laying eggs sooner and iced-over rivers flowing earlier.