This animation is a mosaic of cloud cover data taken by several different satellites in the infrared band. One of the most prominent cloud features during this time was Hurricane Erin near the Atlantic coast of the United States.
This animation is meant to be wrapped around a three-dimensional globe. It shows a global composite of cloud cover data taken from the infrared sensors of several different satellites during September 2001.
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