• Climate models appear to exaggerate the cooling power of clouds

    Yale graduate student Ivy Tan is lead author on a new paper in the journal Science showing that the albedo of mixed phase clouds does not increase, in response to atmospheric warming, at the rate predicted by current climate models. Results suggest significantly greater warming may lie ahead.

  • The CO2 Limits for Antarctic Ice

    Analysis of sea floor sediments from 34 million years ago establishes upper bounds of atmospheric CO2 that allow for glaciers in Antarctica. Spoiler alert: Conditions get alarmingly unstable at the levels we are fast approaching. Former YCEI director Mark Pagani is an author of the paper that appeared in the journal Science.

  • Surface measurements show aerosols masking global warming

    A paper in Nature Geoscience by Yale scientist Trude Storelvmo finds that previous estimates of climate sensitivity may not fully account for the cooling effect of aerosols and be low by about one-half degree Centigrade. Photo: Wouter Knap, Royal Netherlands Meteorological Institute

  • Climate change will impact the incidence of diarrhea. But how?

    Former YCEI postdoc Jonathan Mellor is lead author of a new study showing that ambient temperature, precipitation and extreme weather are all linked to rates of diarrheal disease. But current understanding of the precise connections precludes offering appropriate adaptation strategies.

  • No tipping point seen for monsoons

    Yale scientists Bill Boos and Trude Storelvmo challenge previously held assumptions about the future of monsoons in a warmer world. In a new paper in the Proceedings of the National Academy of Sciences, they argue that the continental-scale weather systems upon which billions of people depend are not going away.

Submitted by: Eric Ellman

A new paper in Nature Geoscience finds that “transient climate sensitivity,” the fast temperature rise that accompanies increases in atmospheric CO2, may be much higher than previously thought. The reason is widespread sulfate pollution from man-made and natural sources, which has tempered the warming that the world would otherwise be seeing at current levels of atmospheric CO2. This conclusion is based on research funded by YCEI and led by Yale atmospheric scientist Trude Storelvmo. Prior studies that did not fully account for the cooling influence of airborne particles …

Submitted by: Eric Ellman

New analytical techniques that allow ice cores to be sampled continuously for more chemical species continue to re-write the history of volcanism. The latest publication from YCEI postdoctoral fellow Francis Ludlow (Sigl et al, December 2015) finds new dates and magnitudes for historic eruptions dating back 2000 years, and concludes that they were the main driver of abrupt summer cooling in Europe. The new record alters what we know, and thought we knew, about European history, and will improve efforts to develop better climate models…

Eric Ellman

For the second time in a month, scientists at Yale University have found evidence that current models of global climate may be underestimating how much warming will occur…

Michael Mann and Trude Storelvmo discuss her group’s latest atmospheric research, and what it implies for scientists’ efforts to predict average future temperatures using global climate models.