This is a video of how the Rossby wave propagates, together with the matching ocean bottom pressure time series. The sound is the actual note played by the ocean, sped up to the audible range ...

It was all happening in big Rossby loops that had taken over the entire ... seven stalled peaks and lows over the same regions – ‘wave-7’ – has lasted seven times for more than two weeks.

The Meteorology, Climatology, and Geophysics Agency (BMKG) noted that this heightened rainfall potential stems from various factors.