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News

Uncertainties key to balancing flood risk and cost in elevating houses

10/26/2020   

People who live in areas designated as river flood zones often seek to raise their homes. “Many houses located along rivers in Pennsylvania are in danger of being flooded,” said Klaus Keller, professor of geosciences. “Some houses are elevated high, some to intermediate levels, and some not at all. Why is this?” Penn State researchers investigated if they might improve on the Federal Emergency Management Agency (FEMA)’s suggested elevation given uncertainties surrounding, for example, future flooding, the future value of money and the vulnerability of a house to flooding.

Ice melt projections may underestimate Antarctic contribution to sea level rise

10/8/2020   

Fluctuations in the weather can have a significant impact on melting Antarctic ice, and models that do not include this factor can underestimate the global impact of sea level rise, according to CLIMA researchers. “We know ice sheets are melting as global temperatures increase, but uncertainties remain about how much and how fast that will happen,” said Chris Forest, professor of climate dynamics at Penn State. “Our findings shed new light on one area of uncertainty, suggesting climate variability has a significant impact on melting ice sheets and sea level rise.”

Simpler models may be better for determining some climate risk

10/1/2020   

According to CLIMA researchers, to assess climate risks, less complex models, with their ability to better sample uncertainties, may be a better choice. “There is a downside to the very detailed, very complex models we often strive for,” said Casey Helgeson, assistant research professor, Earth and Environmental Systems Institute. “Sometimes the complexity of scientific tools constrains what we can learn through science. The choke point isn’t necessarily at the knowledge going into a model, but at the processing.”

CLIMA and MARISA Welcome New Coastal Climate Extension Specialist

5/6/2020   

EESI, CLIMA and MARISA welcome Benjamin Watson as the new Coastal Climate Extension Specialist for the Chesapeake Bay Region, stationed at the Virginia Institute for Marine Sciences (VIMS). Ben brings a background in science outreach and engagement in local communities. ‘I look forward to continuing to work with stakeholders across the watershed to promote informed environmental decision-making,’ he said, ‘and to making sure Chesapeake communities are prepared for the challenges of climate change.’