Operation IceBridge is heading back into the Arctic with two aircraft and the most sophisticated suite of instruments ever flown in polar regions. This year's mission will focus on sea ice thickness, the Canadian Ice Caps, Greenland ice sheet dynamics, and flyovers of the European Space Agency's CryoSat-2 ground validation sites.
GCMD keywords can be found on the Internet with the following citation:
Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 18.104.22.168.0