Why didn't the threshold to
runaway warming happen at that time.
Not exact matches
It may seem surprising to people, but you can look at something like Mars, which has a very thin atmosphere, and you can look at something like Venus which we tend to think of as sort of having this rather heavy, clouded atmosphere, which [is] hellishly
warm because of
runaway greenhouse effect, and on both of those planets you are seeing this phenomenon of the atmosphere leaking away, is actually what directly has led to those very different outcomes for those planets; the specifics of what
happened as the atmosphere started to go in each case [made] all the difference.
I understand 5.8 is a possibility, not a high probability, but if such
warming were to
happen, could this lead to
runaway global
warming?
I do agree that Earth is not Venus — some scientists have already told me how much they hate the label «Venus effect,» but I find it informative, simply because it gives some idea about the
runaway global
warming that did
happen 5 times on Earth (which later, obviously, stabilized back to livable conditions).
Summary: «Boiling» oceans and the ludicrous Venus - like
runaway warming are not
happening as predicted by NASA «experts» - the likelihood of either is literally in the realm of the Twighlight Zone
These satellite measurements of atmosphere temperatures not only confirm that «
runaway» and / or «tipping point» global
warming is not
happening, they also confirm that the NASA «expert» predictions of Venus - like
warming that causes «boiling» oceans was, at best, a wild, lunatic, fringe prediction.
But what
happens when we hit
runaway warming?
CC can provide a perfectly adequate backdrop for a story — there's some decent SF that
happens to be set in a world stricken by
runaway global
warming — but if it's all about the message, then the tendency is towards something that's awkward, preachy, shrill, long - winded, unfunny (or unintentionally funny) or just plain dull.
This explains why the very high carbon dioxide levels in geologic history never caused any
runaway warming It also tells us that burning fossil fuels can not lead to
runaway warming like
happened on Venus according to Hansen.
There is no indication of any trend in that data - nor is there in the instrumental data for the past 150 years for that matter - of any
runaway global
warming actually
happening or credibly projected.
Just a nit, but Venus is an example of what
happens to planets close to the sun - it is more likely that the added heat input caused the CO2 release than that a sharp rise in CO2 caused a
runaway warming trend.
Runaway warming isn't real something that can
happen on Earth.
Your view of WVP as a feedback gas would lead to
runaway warming which clearly doesn't
happen, and for sure the globe has been
warmer in the recent past, especially the holocene optimum, without running away.
Either the switch is «on» (global
warming — the catastrophic,
runaway variety, one assumes — is «
happening» and humans are causing it) or the switch is «off» (global
warming isn't
happening at all, and it's entirely «made up».)
What appears to
happen is that once
warming reaches a certain point, these natural biological factors kick in and can lead to a
runaway, and potentially unstoppable, increase in
warming.