Computer generated perspective view of hurricane Allen, seen over the Gulf of Mexico on August 8, 1980. The image was produced from two Tiros-N satellite images, one taken in visible light, the other in the infrared (at a wavelength of 11 microns),a computer uses the two data sets to calculate the heights of the cloud tops and to create a 3-d computer model of the storm. A 2-d image can then be generated, viewing the hurricane from any chosen height and angle.