4 ms·
Specifically, it would take 927.27 gigatons of tephra. That said, a quick google suggests tephra is about a ton per m^3; so a 100100100 metre cube of the stuff
by Chris2048 5y ago
Specifically, it would take 927.27 gigatons of tephra.
That said, a quick google suggests tephra is about a ton per m^3; so a 100100100 metre cube of the stuff would be 1 kiloton.
a 111km cube would be a gigaton. So we need less than a thousand of those a year :-)
- jdkee 5y agoA 100^3 meter would be one megaton.
- mkl 5y agoPut spaces around your *s or escape them like \*: 100*100*100m is one megaton, and 10*10*10 times that, a 1*1*1km cube, is indeed a gigaton. No one would suggest recapturing all emitted CO2 with this one method though.
- Chris2048 5y agosorry, yes, that should be 100*100*100 ...