Research supported by CPO’s Modeling, Analysis, Predictions, and Projections (MAPP) and Climate Variability and Predictability (CVP) programs evaluated the influence of the feedback mechanism between sea-level fall and ice sheets on future AIS retreat on centennial and millennial timescales for different emission scenarios, using a coupled ice sheet-sea-level model. Previous research has shown that sea-level fall near a retreating marine ice sheet’s grounding line helps stabilize the ice sheet.
The study by Natalya Gomez (McGill University), David Pollard (Pennsylvania State University), and David Holland (New York University) showed that the combination of bedrock uplift and sea-surface fall associated with ice-sheet retreat significantly reduces AIS mass loss compared to a simulation without the feedback. This stabilization tended to be greatest for lower emission scenarios.
To access the paper, go to: http://www.nature.com/ncomms/2015/151110/ncomms9798/full/ncomms9798.html
Americans’ health, security and economic wellbeing are tied to climate and weather. Every day, we see communities grappling with environmental challenges due to unusual or extreme events related to climate and weather. In 2011, the United States experienced a record high number (14) of climate- and weather-related disasters where overall costs reached or exceeded $1 billion. Combined, these events claimed 670 lives, caused more than 6,000 injuries, and cost $55 billion in damages. Businesses, policy leaders, resource managers and citizens are increasingly asking for information to help them address such challenges.
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