Skip to comments.Pollution enhanced thunderstorms warm the planet?
Posted on 05/18/2012 7:01:44 PM PDT by Ernest_at_the_Beach
From the DOE/Pacific Northwest National Laboratory, a new paper in GRL saying something that doesnt make much sense to me. As shown in the diagram above, thunderstorms transport heat from the lower troposphere upwards. The heat source at the base of the atmosphere (at the surface) is the absorption of sunlight by the surface of the Earth. That transfers heat to the lower atmosphere by conduction (a small amount), and mostly be re-radiated Long Wave IR. Heat is then transported upwards by convection, which is done by clouds (cumulus for example) and especially thunderstorms. So, given the amount of energy transport, Im puzzled as to how they think this new theory works as a net warming, especially when all they are doing is running a model, and providing no hard data. They say:
Pollution strengthens thunderstorm clouds, causing their anvil-shaped tops to spread out high in the atmosphere and capture heat especially at night
Basically what they are saying is that thunderstorm anvils are enhanced by pollution, probably due to increased condensation nuclei, and those anvils act as IR reflectors at night but they also act as strong sunlight reflectors, something that goes on every day in the ITCZ, as Willis has pointed out with his Thermostat Hypothesis, now a peer reviewed paper. Steve McIntyre also offered a view that clouds offer a strong net negative feedback here.
But when an abstract ends with this:
The positive aerosol radiative forcing on deep clouds could offset the negative aerosol radiative forcing on low clouds to an unknown extent.
I wonder how this speculation (Happened) .....
(Excerpt) Read more at wattsupwiththat.com ...
More stuff to fill the propaganda stream.
Their plan is throw everything at us including the kitchen sink
They also cool the planet.
Why wait? Kitchen sinks cause glowbull warming.
Aw man, just when I was getting used to the cow farts theory.
They are trotting out everything .
Ancient tree-ring records from southwest U.S. suggest today's megafires are truly unusual
-- Posted on May 15, 2012 by Margaret Allen
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