October 2013 X-Flare from Solar Dynamics Observatory
Released on February 11, 2014
Another Halloween space weather fest? October-November 2003 of the previous solar cycle saw some of the most energetic solar events since space flight (see Halloween Solar Storms 2003: A Multi-Mission View. Halloween of 2013 has seen a similar round of high solar activity, with energetic flares and coronal mass ejections (CMEs).
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