All Scientists are Sceptics ~Professor Bob Carter

Whenever someone asserts that a scientific question is “settled,” they tell me immediately that they don’t understand the first thing about science. Science is never settled. Dr David Deming

Perhaps the most frustrating aspect of the science of climate change is the lack of any real substance in attempts to justify the hypothesis ~Professor Stewart Franks

A lie told often enough becomes the truth.
-- Vladimir Ilyich Lenin - See more at:
A lie told often enough becomes the truth.
-- Vladimir Ilyich Lenin - See more at:
A lie told often enough becomes the truth.
-- Vladimir Ilyich Lenin - See more at:

Thursday, 22 January 2015

Greenland Ice Sheet: 4 year High. Another IPCC OOPS Moment.

Despite fears that global warming is harming the Arctic region faster than the rest of the world, Greenland is defying climate scientists and currently growing at its fastest rate in four years.
The Danish Meteorological Institute reports that Greenland’s ice sheet has seen more growth so far this year than in the last four years. Greenland’s growth in 2015 is also higher than the mean growth for 1990 to 2011. (link)

Current Surface Mass Budget of the Greenland Ice Sheet (DMI)

Left: Map of the surface mass balance today (in mm water equivalent per day).
Right: The average surface mass balance for today’s calendar date over the period 1990-2011.
In the above figure, we show the daily surface mass balance (on the left) and you can see where it has snowed and melted (incl. sublimate) on the ice sheet over the last 24 hours. For comparison, the map to the right shows the average value for the same calendar date over the period 1990-2011. This historical average is based on weather from a somewhat different model and the two are therefore not always strictly comparable.
The surface mass balance is calculated over a year from September 1st to August 31st (the end of the melt season). The figure to the right shows the sum of all the daily changes from September 1st up to today. Next year on September 1st the map will be reset and we start over. This accumulated map illustrates how much the surface mass balance has contributed in each point across the ice sheet. 
Map of the accumulated surface mass balance
(in mm water equivalent) from September 1st to now.
The figure below shows the total daily contribution from all points on the ice sheet (top) and the same accumulated from September 1st to now (bottom). The blue curves show this season’s surface mass balance in gigatons (Gt; 1 Gt is one billion tons and corresponds to 1 cubic kilometer of water), and for comparison the mean curves from the historical model run are shown with two standard deviations on either side. Note that the accumulated curve does not end at 0 at the end of the year. Over the year, it snows more than it melts, but calving of icebergs also adds to the total mass budget of the ice sheet. Satellite observations over the last decade show that the ice sheet is not in balance. The calving loss is greater than the gain from surface mass balance, and Greenland is losing mass at about 200 Gt/yr.

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