• Climate models appear to exaggerate the cooling power of clouds

    Yale researcher Ivy Tan is lead author on a new paper in Science, which determines that the albedo of mixed phase clouds does not increase as much as climate models assume that they will in response to atmospheric warming. Results suggest significantly greater warming.

  • Climate Change and Health Week, April 6-8

    James Hansen, director of Columbia University's Program on Climate Science, Awareness and Solutions, is the Yale School of Public Health's first Climate Change and Health Leader in Residence. See calendar for additional health-related talks and to reserve an opportunity to meet with Dr. Hansen.

  • The Limits of Antarctica's Ice

    Analysis of sea floor sediments from 34 MM years ago establishes the upper bounds of atmospheric CO2 concentration for glaciers in Antarctica. Spoiler alert: conditions get alarmingly unstable at the levels we are fast approaching. Former YCEI director Mark Pagani is one of the authors in the journal Science.

  • Radiation changes at Earth's surface reveal aerosol "masking"

    Trude Storelvmo's YCEI-funded research, published in Nature Geoscience, finds that global dimming, attributed to sulfate pollution, effectively suppresses previous estimates of climate sensitivity by approximately 1/2 degree Centigrade. Photo: Wouter Knap, Royal Netherlands Meteorological Institute

  • Andy Ridgwell lets the GENIE out of the Earth system model

    Richard Foster Flint was a pioneering Quaternary glaciologist and Yale professor beginning in 1945. The lecture series in his name continues his legacy of excellence, bringing lectures and workshops with the world's leading paleoclimatologists and oceanographers to Yale.

Submitted by: Eric Ellman

Trude Storelvmo is principal author of the YCEI-funded study in Nature Geoscience which finds that “transient” climate sensitivity, the amount of temperature rise we will experience when atmospheric CO2 doubles over preindustrial levels, is higher than reported by many previous studies. To date, warming due to CO2 emissions has effectively been ‘masked” by widespread sulfate pollution. Studies that haven’t fully accounted for the cooling effect from pollution particles have therefore erroneously concluded that climate is less …

Submitted by: Eric Ellman

New analytical techniques, which allow ice cores to be sampled continuously and for additional chemical species, continue to re-write the history of vulcanism. The latest publication from YCEI postdoctoral researcher Francis Ludlow (Sigl, et al) 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 impacts what we know and thought we knew about European history, as well as efforts to develop better climate…

by Eric Ellman

For the second time in a month, researchers at Yale University have produced new evidence that Intergovernmental Panel on Climate Change (IPCC) scientists …

Michael E. Mann and Trude Storelvmo discuss her group’s latest research, and what it implies for scientists’ efforts to identify the most critical and challenging parameter for estimating future average global temperature.