June 19, 2009

"Ignorance of the NASA writers is on display"

FROM- The Migrant Mind

(excerpt from)

Being Colder Makes the Ice Melt

....NASA says there is no evidence for warming in the southern hemisphere. This is horse-hockey, ladies and gentlemen. Ignorance of the NASA writers is on display, but then, they do want to scare you into giving them your hard earned money in the form of taxes.

The interesting thing is that they are depending on models to tell them what the night time temperature is. All one can get from paleoclimatic information on the ground is indicators of average temperature. And all the indicators I have seen say the mean temperature was warmer by the 2-3 deg C seen in the map on the above referenced page. Those numbers are mean increases in temperature.

Let's look at the logic in the above statement that there is no evidence that Antarctica was warmer during the Climatic Optimum than today. It is sadly clear to me that people don't remember what they read on this blog from a few weeks back, nor do they look up data before responding to what is written.

If you do nothing else with this post read the bolded parts of the quotations below

From my post on March 23, 2009 here

The stability of floating ice shelves is an important indicator of ocean circulation and ice-shelf mass balance. A sub–ice-shelf sediment core collected during the Austral summer of 2000–2001 from site AM02 (69842.89S, 72838.49E) on the Amery Ice Shelf, East Antarctica, contains a full and continuous record of glacial retreat. The AM02 core site is ;80 km south of the floating ice shelf edge and contains a 0.5-m-thick Holocene surface layer of siliceous mud and diatom ooze of marine origin. Core data are supportive of sub– ice-shelf circulation models that predict the landward flow of oceanic water, and prove that the landward transport of hemipelagic sediments occurs beneath floating ice shelves over distances of at least ~80 km. An increase in sea-ice–associated diatom deposition in the upper part of the Holocene suggests that a major retreat of the Amery Ice Shelf to at least 80 km landward of its present location may have occurred during the mid-Holocene climatic optimum." Mark A. Hemer and Peter T. Harris, " Sediment core from beneath the Amery Ice Shelf, East Antarctica,"Geology; February 2003; v. 31; no. 2; p. 127–130, p. 127

How in the hell can NASA say that there is no evidence of the southern hemisphere being warmer when the Amery Ice Shelf was melted by 80 km during that period?

A question for NASA, if it was colder then than now, was it the cold that melted this ice cap? Utter illogic. The guy who wrote the NASA website ignored this evidence or didn't do sufficient research to know of it.


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