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Climate Seminar - 04/01/2019 - Ben Cook, NASA GISS & LDEO

"Paleoclimate Perspectives on Climate Change and Drought"

The paleoclimate record of drought over the last millennium can be used to contextualize drought projections for the future, as well as for detection and attribution. In particular, over North America, where the signal of climate change in drought is especially strong, future warming under a high emissions scenario is likely to increase drought risk in the Southwest and Central Plains beyond even the multi-decadal megadrought events of the Medieval-Era. Further, the natural variability constrained by near global scale drought reconstructions demonstrate that a human signal in global hydroclimate is detectable in the early 20th century. The paleoclimate record thus suggests that anthropogenic climate change has already increased drought risk in many regions, and that these changes will continue with increased warming in the coming decades.

Location: Guyot Hall - Room 220

Date/Time: 04/01/19 at 4:00 pm - 04/01/19 at 5:00 pm

Category: Seminar

Department: Geosciences