This short example animation begins by showing most of Central America and zooms down to El Salvador and it's neighboring countries.
Central America is the region between North America and South America. An edited version of this zoom was used as the opening shot for the video titled "NASA Satellites Help Farmers in Central America's Dry Corridor".
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 18.104.22.168.0