  We study temporal variations in the amplitudes and widths of high-degree
acoustic modes by applying the ring-diagram technique to the GONG+, MDI and HMI
Dopplergrams during the declining phase of cycle 23 and rising phase of cycle
24. The mode parameters from all three instruments respond similarly to the
varying magnetic activity. The mode amplitudes and widths show consistently
lower variation due to smaller magnetic activity in cycle 24 as compared to the
previous solar cycle.
