http://www.epa.gov/climatechange/effects/downloads/Challenge_chapter2.pdf

That didn’t work out so well. Instead of warming and losing ice, Antarctica cooled an gained sea ice – as this 2006 NASA image shows.

http://earthobservatory.nasa.gov/IOTD/view.php?id=6502

http://nsidc.org/data/seaice_index/images/s_plot_hires.png

But then something very typical of GISS happened in 2007. The data suddenly changed. Antarctica’s long term temperature trend changed from strong cooling, to warming.

http://earthobservatory.nasa.gov/IOTD/view.php?id=8239

NASA justified this trend reversal with the following statement : The scientists estimate the level of uncertainty in the measurements is between 2-3 degrees Celsius.

So they switched a long term cooling trend into a warming trend, based on measurements with an error bar more than an order of magnitude greater than the trend. In other words, Hansen’s Ministry Of Information didn’t want a map out there showing Antarctica getting cooler.