MDI 45 Image Average Dopplergram Minus Polynominal Fit Subtracting the average solar rotation signal from a 45 image average of full disk dopplergrams enhances the surface motions associated with solar convection. Convective flow transports material and energy from the Sun's interior along narrow plumes. At the surface, the upwelling material then spreads out horizontally in the granulation pattern seen in this image. Little of this pattern is seen at the center of the solar disk because the motion is perpendicular to the line of sight.

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