The barometers around the world recording the shock wave is one of the coolest things.

“Krakatoa: The Day the World Exploded: August 27, 1883” by Simon Winchester went into this point.

Also, this write up from 2016 at Nautilus after the Papua New Guinea Volcano eruption. https://nautil.us/issue/38/noise/the-sound-so-loud-that-it-c...