After the launch of ICESat-2 in 2018, Operation IceBridge mostly came to a close. However, Operation IceBridge Alaska continues to work in the field studying and recording ice thickness in the region. Scientists from University Alaska Fairbanks observe sea ice, glaciers, and ice sheets via specially retrofitted aircrafts.
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