[metmom]

How does this one compare to Pinatubo?

[Long Jon No Silver]

It’s a smaller eruption than Pinatubo. However it is closer to the Equator by a factor of 2. The closer to the equator the greater the particulates getting held aloft in the ITCZ, the convergence region of the hemispheric wind directions on either side of the equator

[mabarker1]

Volcanic explosivity index:

The volcanic explosivity index (VEI) is a relative measure of the explosiveness of volcanic eruptions. It was devised by Christopher G. Newhall of the United States Geological Survey and Stephen Self in 1982.

Volume of products, eruption cloud height, and qualitative observations (using terms ranging from "gentle" to "mega-colossal") are used to determine the explosivity value. The scale is open-ended with the largest eruptions in history given a magnitude of 8. A value of 0 is given for non-explosive eruptions, defined as less than 10,000 m3 (350,000 cu ft) of tephra ejected; and 8 representing a mega-colossal explosive eruption that can eject 1.0×1012 m3 (240 cubic miles) of tephra and have a cloud column height of over 20 km (66,000 ft). The scale is logarithmic, with each interval on the scale representing a tenfold increase in observed ejecta criteria, with the exception of between VEI-0, VEI-1 and VEI-2.

Marapi:

Pinatubo: