The Centre for Polar Observation and Modelling: National Capability Science Programme April 2019 - March 2021

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The Centre for Polar Observation and Modelling (CPOM) studies processes occurring at the poles which affect our climate, oceans, atmospheric circulation and sea level. We develop satellite observations of land and sea ice, combining them with numerical models to explain how Earth's ice, oceans and atmosphere interact and to predict how they will evolve.Combining data and models has allowed us, for example, to improve seasonal forecasts of sea ice and projections of ice sheet evolution, and to explain key signals of climate change such as dynamical imbalance of the Pine Island Glacier, stability of the Larsen Ice Shelf, controls on Greenland glacier dynamics, variability in Arctic sea ice thickness, and variability in the Arctic and Southern Oceans.We lead international efforts to quantify sea level rise due to the polar ice sheets, and to predict their future contributions, we partner with space agencies to provide scientificleadership for polar satellite missions, we produce and distribute unique and widely-used records of Earth's sea ice and ice sheet thickness, and we support the land ice and sea iceelements of the UK Earth System Model. Our activities are internationally outstanding, decadal in scale, and closely aligned with BAS's science priorities. Together with BAS, our work addresses NERC's core strategy to observe, monitor and predict the behaviour of the Earth and its environment over long periods and across large scales.