Predicted changes in orbital forcing suggest that
the next glacial period would begin at least 50,000 years from now, even in absence of human - made global warming (see Milankovitch cycles).
The interglacial plateau is followed by global cooling of 4 - 6 degrees C and up to 8 degrees C in the Antarctic data that takes 7,000 to 13,000 years to re-enter
the next glacial period.
These multi-centennial cycles of climate variability will continue over the next several millennia until the true underlying Holocene interglacial long - term cooling begins to take Earth back into
the next glacial period.
Consequently, should we not need all the warming we can get to reduce the long term natural cooling trend towards
the next glacial period?!
While this is no excuse for continuing to foul our own nest, a gradual greenhouse gas buildup may be a blessing, something that could delay the onset of
the next glacial period, or at least reduce its severity.