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i think they basically give you the same info, just using different false-color schemes.. IR2 imagery is especially useful at night since the movement of low clouds is almost as apparent as with daytime visibles. IR4 false colors are more distinct and are niftier for telling cloud top temperatures.. convective intensity and such. i personally use IR2 more often.. visible by day, IR2 by night.. to see if convection is distorting or curving the wind field at lower levels. HF 2013z17august |