Released on September 27, 2005
This animation shows the annual minimum sea ice extent and concentration for 25 years, from 1979 to 2005. Average climatology from 1979 to 2004 which is shown as a yellow outline is also included. Three year moving average are shown from 1979-1981 through 2003-2005.
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 184.108.40.206.0