Sentences with phrase «iris effect»
Well, it is a different sort of iris effect from that which was originally proposed: the pupil becomes more dilated with increased infrared rather than more constricted.
realclimate.org
So looking at one - year windows in the data and suppressing seasonality eliminates from 16 % to 39 % of the putative iris effect, depending on which window you look at.
The phenomenon of carbon fertilization and the huge tonnages of CO2 that plants are removing from the system, the theorized iris effect, the impact of unknowable undersea volanic activity, the persistent regrowth of corals in areas devastated by bleaching events... all of this evidence points to a catastrophic failure of the politics of science to stay grounded in facts.
I know Lindzen has a theory that a change in tropical cloud cover will offset greenhouse - gas - caused warming, the unproven «iris effect».
To a certain extent, the Conclusions section of the paper stifled the cautious language by suggesting that the possible existence of this iris effect required modifications to GCMs.
After saying this stuff about clouds he went on to mention something similar to the infamous «iris effect» (as the planet warms, more clouds appear, thus reducing insolation and limiting the temperature rise).
It doesn't validate Lindzen et al.'s original hypothesis — in fact, it does the opposite — even with an iris effect, the sensitivity does not become negligible.
In effect, this imposes a tweak that mimics the iris effect — it is not a demonstration that the iris effect emerges from any physical mechanisms.
So in this sense the inverse «iris effect» is quite dead to the extent that it might be regarded as contributing a significant negative feedback in the tropics.
For example, Spencer et al 2007 analysis of recent and precise climatologies suggests that the iris effect is not dead, after all, and the order of magnitude of the negative feedback -LRB--6 W / m2 TOA for warm tropical events) is interesting.
If this «iris effect» is found to be a general process active in tropical oceans around the world, the Earth may be much less sensitive to the warming effects of such influences as rising greenhouse gas concentrations in the atmosphere.