Atmospheric and Oceanic Sciences (ATOC - formerly PAOS)

CU study shows how early Earth kept warm enough to support life

Solving the “faint young sun paradox” -- explaining how early Earth was warm and habitable for life beginning more than 3 billion years ago even though the sun was 20 percent dimmer than today -- may not be as difficult as believed, says a new University of Colorado Boulder study.

CU-Boulder prof to lead NASA campaign to study North American air quality

A University of Colorado Boulder professor is leading a major NASA airborne science campaign this summer that will probe weather patterns and air pollution over a vast expanse of North America that have potential global climate consequences.

Climate zones will shift faster as climate warms, new study finds

As the planet warms, Earth’s climate zones are shifting at an accelerating pace, says a new study led by a scientist at the Cooperative Institute for Research in Environmental Sciences, a joint venture between the University of Colorado Boulder and the National Oceanic and Atmospheric Administration.

Ancient asteroid may have triggered global firestorm on Earth

A new look at conditions after a Manhattan-sized asteroid slammed into a region of Mexico in the dinosaur days indicates the event could have triggered a global firestorm that would have burned every twig, bush and tree on Earth and led to the extinction of 80 percent of all Earth’s species, says a new University of Colorado Boulder study.

Erupting volcanoes offset recent Earth warming

A team led by the University of Colorado Boulder looking for clues about why Earth did not warm as much as scientists expected between 2000 and 2010 now thinks the culprits are hiding in plain sight -- dozens of volcanoes spewing sulfur dioxide.

Did the Little Ice Age start with a big bang?

Scientists have disagreed for many years over the precise cause for a period of cooling global temperatures that began after the Middle Ages and lasted into the late 19th century, commonly known as the Little Ice Age. 

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