Close to the solar surface, variation of rotation rate with latitude and time from which a temporal average has been subtracted, revealing banded zonal flows migrating toward the equator. [Color table has faster rotation as red/yellow, slower as green/blue, covering a range of +/- 1.5 nHz]

For more details, see Howe, R., Christensen-Dalsgaard, J., Hill, F., Komm, R. W., Larsen, R. M., Schou, J., Thompson, M. J., & Toomre, J. 2000, Astrophysical Journal 533L, 163 Deeply Penetrating Banded Zonal Flows in the Solar Convection Zone

This image uses a continuous sequence of 10 years' combined MDI and GONG data.