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The ice sheet mass balance inter-comparison exercise (IMBIE) was established in 2011 as a community effort to reconcile satellite measurements of ice sheet mass balance. IMBIE is a collaboration between scientists supported by the European Space Agency (ESA)  and the National Aeronautics and Space Administration (NASA), and contributes to assessment reports of the Intergovernmental Panel on Climate Change (IPCC). IMBIE has led to improved confidence in the measurement of ice sheet mass balance and the associated global sea-level contribution. The improvements were achieved through combination of ice sheet imbalance estimates developed from the independent satellite techniques of altimetry, gravimetry and the input-output method. Going forwards, IMBIE provides a framework for assessing ice sheet mass balance, and has an explicit aim to widen participation to enable the entire scientific community to become involved.

Sea Level Rise

Global sea level rise, its causes and impacts.

Past Assessments

Past measurements of ice sheet mass balance and the need for the IMBIE project.

The IMBIE assessment

The IPCC and the IMBIE project.

Future Assessments

IMBIE as a continuing exercise with wider participation.

Sea Level Rise