Decreases in global temperature from year to year are
known to be related to volcanic activity and have tended to reverse the
presiding warming trend during the later part of the 20th century, at least
for a few years.
Pinatubo, in 1991, was a particularly large eruption that cooled global temperatures by about 0.8oC briefly during the 1990's. |
If the entire atmosphere cools by 0.8oC, how large of a cooling (in Joules) is associated with the event?