Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder


Who’s the Source of a Banned Ozone-destroying Chemical?
May 22, 2019

It was one of the major scientific discoveries of 2018: Emissions of an ozone-destroying chemical responsible for creating the Antarctic ozone hole were unexpectedly rising again, in an apparent violation of an international ban on its manufacture and use. The finding was reported by NOAA scientist and CIRES Fellow Stephen Montzka and an international team of colleagues.

Where were the emissions coming from? A new study published today in Nature provides an answer.

Rising Emissions Drive Greenhouse Gas Index Increase
May 21, 2019

Record levels of greenhouse gas pollution continued to increase humanity’s impact on the atmosphere’s heat-trapping capacity during 2018, according to a yearly analysis released by NOAA scientists today.

U.S. Methane Emissions Flat Since 2006 Despite Increased Oil and Gas Activity: Study
May 15, 2019

Natural gas production in the United States has increased 46 percent since 2006, but there has been no significant increase of total U.S. methane emissions and only a modest increase from oil and gas activity, according to a new CIRES-led study.