NASA - National Aeronautics and Space Administration

IceBridge - Flying over the poles to monitor critical areas of Earth's ice sheets, glaciers and sea ice IceBridge, a six-year NASA mission, is the largest airborne survey of Earth's polar ice ever flown. It will yield an unprecedented three-dimensional view of Arctic and Antarctic ice sheets, ice shelves and sea ice. These flights will provide a yearly, multi-instrument look at the behavior of the rapidly changing features of the Greenland and Antarctic ice.

Data collected during IceBridge will help scientists bridge the gap in polar observations between NASA's Ice, Cloud and Land Elevation Satellite (ICESat) -- in orbit since 2003 -- and ICESat-2, planned for early 2016. ICESat stopped collecting science data in 2009, making IceBridge critical for ensuring a continuous series of observations.

IceBridge will use airborne instruments to map Arctic and Antarctic areas once a year. IceBridge flights are conducted in March-May over Greenland and in October-November over Antarctica. Other smaller airborne surveys around the world are also part of the IceBridge campaign.

Remote sensing plays a key role in characterizing the world's major ice sheets due to their size and the scale of change that they undergo. The NASA Cryosphere program has a range of goals, but at present its two highest priorities are understanding:

1. Terrestrial ice sheets of Greenland and Antarctica with an emphasis on acquiring data to characterize them and develop predictive models of their behavior and contributions to sea level change.
2. Arctic sea ice, and to a lesser extent the Antarctic sea ice, with an emphasis on determining its status and the controls on its extent and thickness