With the theory of positive
warming feedbacks thus neatly de-bunked, in a sane world we would see the end of cagw hysteria.
Not exact matches
Sea ice reflects most of the sun's energy, he explained, whereas the open ocean absorbs more energy, and
thus the disappearance of sea ice triggers even more
warming, in a positive -
feedback loop called albedo.
These time scales are within the lifetime of anthropogenic CO2, and
thus these
feedbacks must be considered in estimating the dangerous level of global
warming.
By this, I imply that some sort of negative
feedback may prevent the planet from persistent
warming,
thus making «global
warming» innacurate.
Since OHC uptake efficiency associated with surface
warming is low compared with the rate of radiative restoring (increase in energy loss to space as specified by the climate
feedback parameter), an important internal contribution must lead to a loss rather than a gain of ocean heat;
thus the observation of OHC increase requires a dominant role for external forcing.
The cloud cover are likely not a forcing and
thus a cause of
warming but more likely a positive
warming feedback.
(This doesn't include any solar - heating (albedo, etc.)
feedbacks, which is necessary for a direct comparison; the GHE
warming of about 33 K is only the effect of the atmopheric LW optical thickness, and
thus doesn't include any
feedbacks on solar heating)
[Response: That is a positive
feedback that acted during ice age cycles: when it got
warmer at the end of an ice age, this led to release of stored CO2 from the deep ocean,
thus raising atmospheric CO2 levels.
It is easy to see why this
feedback amplifies the climate change, because reduction of ice sheet size due to
warming exposes a darker surface, which absorbs more sunlight,
thus causing more
warming.
Thus one would expect that that the
warming models without
feedback are better established and agreed to than those with
feedback.
Through horizontal averaging, variations of water vapor and temperature that are related to the horizontal transport by the large - scale circulation will be largely removed, and
thus the water vapor and temperature relationship obtained is more indicative of the property of moist convection, and is
thus more relevant to the issue of water vapor
feedback in global
warming.
As more ocean is exposed, this can trigger a potentially dangerous mechanism of positive
feedback, whereby less light is reflected, causing further
warming and
thus more ice to melt.
Thus there is no positive
feedback upon which the IPCC stakes their claim that any carbon dioxide
warming will be magnified.
According to the ice - albedo
feedback mechanism as the Earth
warms more ground and water would be uncovered which would absorb a higher proportion of the incoming solar radiation
thus raising the temperature and melting more ice and snow.
But, if the atmosphere in the polar regions
warms there will be more evaporation and
thus a postive
feedback from greenhouse effect of increased water vapor.
Thus, observations point to a positive low - cloud
feedback on
warming.
Even IPCC admitted it ignored multiple positive
feedback loops that are sure to drive up temperatures,
thus their
warming predictions are fatally flawed and bring a false sense of security
As I've understood it from McGribben's explanation back in» 89, the tipping point occurs when the combined CO2e output of all
feedbacks exceeds the carbon sinks» capacity, after which their outputs are inevitably adding to airborne GHG stocks and
warming and are
thus effectively self - reinforcing.
Under such a response, for uniform
warming, the largest fractional change in water vapour, and
thus the largest contribution to the
feedback, occurs in the upper troposphere.
So we have the peculiar situation that both of these approaches try to claim that climate sensitivity is small, but the NIPCC approach is to claim that aerosol forcing is very large (
thus providing a negative
feedback to
warming), whereas the Lindzen approach is to claim that aerosol forcing is very small (
thus necessitating a small sensitivity to explain the observed
warming so far).
Regarding that last point, consensus climate science has proposed a hypothesis on the claim that climate physics dictates that rising atmospheric CO2 levels will
warm the atmosphere substantially,
thus causing a positive
feedback loop, which will then continuously accelerate
warming until a tipping point of runaway temperatures take place, turning Earth into the next Venus.
Authors conclude from this and other evidence from process models that
warmer climates may enhance tropical forest release of CO2,
thus accelerating atmospheric CO2 accumulation through a positive
feedback.
Then consider that whenever the number of photons does decrease (every day after the peak at noon) that the number of GHE interactions MUST also decrease, and that the number of unused GHGs (in the GHE process) MUST increase,
thus establishing that there is AN EXCESS of GHGs over those used in the GHE process, and therefore ALL of the GHGs generated (either by man as CO2, or as WV by
feedback) do NOT necessarily have to be in use to create more GHE
warming.
Ferdinand, in 42 you wrote: «
Thus it is difficult, if not impossible, to say what is attributable to GHG forcing (with
feedbacks) and what the part of solar forcing (with
feedbacks) in the amplified Arctic
warming is».
Thus, sea ice has melted at an unprecedented rate and is now caught in a vicious cycle known as the ice - albedo
feedback: as sea ice retreats, sunshine that would have been reflected into space by the bright white ice is instead absorbed by the ocean, causing waters to
warm and melt even more ice.
They show that long - term acclimatization or adaptation to
warm and acidified conditions could change or even reverse the negative calcification responses observed in short - term studies, and
thus alter
feedbacks to the global carbon cycle.
Changes in cloudiness appear to play a negligible role in observed Arctic darkening,
thus reducing the possibility of Arctic cloud albedo
feedbacks mitigating future Arctic
warming.
Thus, there is a positive
feedback between
warming, snow aging, increased solar absorption, and reduced albedo.
None taken, I've been insulted by experts everywhere from Tamino to Deltoid; as for
feedback from clouds I think I said clouds were a moderator [sic] and this can be contrary as my night example shows; that is, clouds at night
warm whereas clouds at day cool; as for Professor Pinker, my friend Steve Short summed up her findings and cloud
feedback thus: