Looking through cirrus clouds over part of South America. Note: This visualization was made to demonstrate a technique developed by scientists to remove clouds from data images by using cloud data. Initially, you will see a portion of South America with the clouds obstructing the view, then fades to a mask to mask out the clouds, and then removes the clouds from the view, leaving the view of South America unobstructed. Animator: Stuart A. Snodgrass (GST). Scientist: Yoram Kaufman (NASA/GSFC). Platforms/Sensors/Data Sets: Terra/MODIS.