This visualization was generated using high time resolution (12 seconds) data from the Atmospheric Imaging Assembly (AIA). Two datasets are used, the SDO/AIA 304 Ångstrom wavelength (orange color table) and the 171 Ångstrom wavelength (gold color table). These are wavelengths in the ultraviolet band of the electromagnetic spectrum. They are not visible to the human eye or to ground-based telescopes so coded colors are used in presentation.
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