Hold the left mouse button down as you drag the Slider control (labelled "Set Fade Level") above the image (or click on the arrow buttons) to fade between the Aqua MODIS visible and InfraRed (IR) images at 18:27 UTC on 03 September 2004. To zoom, click on the "Zoom" button, and then click the "hand" cursor on the image where you want to center the zoom. (To quickly toggle between the 2 images, click in the middle of the Slider control area, beneath the word "Fade" in "Set Fade Level")
The visible channel image shows a cloud-filled eye associated with Category 3 Hurricane Frances at the time of the satellite overpass. It is interesting to note that the IR brightness temperatures of the convective anvil debris within the eye itself (-80 to -85 C) were about 10 degrees C colder than the brightness temperatures of the surrounding eyewall region (-70 to -75 C).
Java applet developed by Tom Whittaker, CIMSS / SSEC