Wednesday, October 13, 2021 - 6:00am
Nuclear test on Bikini atoll in 1954.

The massive columns of smoke generated by a nuclear war would alter the world’s climate for years and devastate the ozone layer, endangering both human health and food supplies, new research shows.


Wednesday, October 6, 2021 - 6:00am
NASA satellite image of ozone over Arctic in October 2021

International agreements to protect the ozone layer have been so successful that they will prevent an estimated 443 million cases of skin cancer and 63 million cataract cases for people born in the United States through the end of this century, according to new research.


Tuesday, July 27, 2021 - 6:00am
Satellite image of smoke from Australian fire

The smoke from devastating Australian bushfires cooled the planet in 2020 and pushed tropical thunderstorms northward.


Friday, July 9, 2021 - 6:00am
Eruption of Mt. Agung in 2017.

A massive volcanic eruption in Indonesia about 74,000 years ago affected the climate but likely had limited impacts on early human populations in Africa, according to new research co-authored by NCAR scientists.


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ACOM | Atmospheric Chemistry Observations & Modeling