The International Ice Patrol (IIP) continuously gathers iceberg sightings and compiles them into an annual database, effectively tracking the location of numerous North Atlantic icebergs. Since these icebergs intersect major shipping lanes tracking them is essential for ocean travel safety. This animation not only tracks the speed and distance travelled of individual icebergs, but symbolically distinguishes their relative sizes by keeping growlers, bergy bits, and small icebergs small, while bigger icebergs are sized larger. Disclaimer: The size of icebergs depicted are relative to one another, but not true to scale. Had they been true to scale, most would not be visible from this distance.
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 220.127.116.11.0