Last year Operation IceBridge flew for the first time out of McMurdo Station in Antarctica, reaching a new slate of exciting science targets. But that means it's now been two years since the mission has flown over critical areas in West Antarctica, and so the airborne campaign is returning to fly out of Punta Arenas, Chile to monitor quickly-changing ice closer to the Antarctic Peninsula.
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