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Sunspot position data obtained from Kanzelh\"{o}he Observatory for Solar andEnvironmental Research (KSO) sunspot drawings and white light images in theperiod 1964 to 2016 were used to calculate the rotational and meridionalvelocities of the solar plasma. Velocities were calculated from daily shifts ofsunspot groups and an iterative process of calculation of the differentialrotation profiles was used to discard outliers. We found a differentialrotation profile and meridional motions in agreement with previous studiesusing sunspots as tracers and conclude that the quality of the KSO data isappropriate for analysis of solar velocity patterns. By analysing thecorrelation and covariance of meridional velocities and rotation rate residualswe found that the angular momentum is transported towards the solar equator.The magnitude and latitudinal dependence of the horizontal component of theReynolds stress tensor calculated is sufficient to maintain the observed solardifferential rotation profile. Therefore, our results confirm that the Reynoldsstress is the dominant mechanism responsible for transport of angular momentumtowards the solar equator.

Meridional Motions and Reynolds Stress Determined by Using Kanzelh\"{o}he Drawings and White Light Solar Images from 1964 to 2016