NASA's TRMM spacecraft is used by meteorologists to understand Hurricane Ivan. TRMM observed this view of Hurricane Ivan as the storm made landfall on September 16, 2004. The cloud cover is taken by TRMM's Visible and Infrared Scanner(VIRS). The rain structure is taken by TRMM's Tropical Microwave Imager (TMI). It looks underneath of the storm's clouds to reveal the underlying rain structure. Blue represents areas with at least 0.25 inches of rain per hour. Green shows at least 0.5 inches of rain per hour. Yellow is at least 1.0 inches of rain and red is at least 2.0 inches of rain per hour.
Zoom down to Hurricane Ivan on September 16, 2004, as its attacks Alabama, Florida, Lousianna, and Georgia. The TRMM ispacecraft lets us see past the clouds to see the rain that fuels the storm. Blue represents areas with at least 0.25 inches of rain per hour. Green shows areas of 0.5 inches of rain per hour. Yellow is a least 1.0 inches of rain. Red shows the most intense rains where over 2.0 inches per hour were recorded.
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 22.214.171.124.0