Thursday, December 13, 2012

I'll bet Morano gets this all wrong



I've had a running little Twitter and comment battle with agitpropist Marc Morano and climate court jester Steven Goddard about snow and global warming.  You see, Morano and Goddard delight in pointing out incidences of increased snowfall as being at odds with global warming, when in fact they probably aren't.  (Let's get this straight right here - because the Earth is warming, EVERY weather phenomena will be somehow affected, because Earth's weather and climate are interrelated.  Of course, some types of phenomena will be minimally affected, and the connection to warming will be hard to tease out.  In other cases, the connection(s) will be much more obvious and discernable, and quantifiable.

Heavy early snow in the U.S. north was predicted before this winter because it was expected that colder air with moisture coming off the Arctic Ocean, due to the exposed surface caused by sea ice retreat caused by global warming would make the snowstorms happen. 


More ice loss through snowfall in Antarctica


This study here says some very interesting things.  One of the clearest statements it make is that global warming CAUSES MORE SNOWFALL on ANTARCTICA. 

Quote:  "The one certainty we have about Antarctica under global warming is that snowfall will increase," Winkelmann explains."

Got that?  And the next neat thing about that is that increased snowfall leads to increased ice mass and accretion.  Now we find out that it will also cause increased ice loss.



Quote: "Snow piling up on the ice is heavy and hence exerts pressure -- the higher the ice the more pressure. Because additional snowfall elevates the grounded ice-sheet but less so the floating ice shelves, it flows more rapidly towards the coast of Antarctica where it eventually breaks off into icebergs and elevates sea level."

Got that?  More snow, more ice piling up in the middle, more ice lost at the edges.

All due to global warming.

Now, Morano will just see "more snow in Antarctica" and send out a notice to his followers about something else that doesn't jive with global warming, when in fact it totally does.


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