Germany’s leading political daily the Frankfurter Allgemeine Zeitung (FAZ) published an open letter written by geology Professor Dr. Friedrich-Karl Ewert rejecting the claims made by the Potsdam Institute for Climate Impact Research (PIK) that sea level rise is accelerating. The open letter is now available at the European Institute for Climate and Energy (EIKE), read here (part after Schellnhuber).
According to the PIK:
“Due to global warming, sea level is rising today faster than at any time in the last 2000 years. Since the start of the Industrial Revolution, the curve is going ‘up steeply’.”
These claims are based on cherry-picked data from a single location at the North Carolina coast. In response Ewert’s wrote the open letter, excerpts of which follow. Ewert writes (emphasis added):
This claim must be refuted because the declaration made by the PIK is factually false. Correct is that scientists have determined just the opposite. The Journal of Coastal Research reported in journal 27/3 (May 2011).”
Here according to the journal, the global temperature increase during the last 100 years did not accelerate sea level rise, Indeed sea level rise has recently slowed down.
Ewert writes that there is a simple proof for the falsehood of PIK’s claim:
At the coral reefs in the Great Barrier Reef and also at the coasts of the Caribbean Islands one finds dry coral reefs which were about 3.5 meters over today’s sea level, When these reefs formed, the sea level was accordingly higher. No one knows how fast the sea level rose during the time before that.”
Ewert also rejects the PIK’s claim that the Western Antarctic Ice Shelf is about to tip and that global warming is racing ahead. Ewert writes in his letter:
Detailed evaluation of temperature data shows a completely other picture: In many parts of the globe a rewarming took place after 1700, after the Little Ice Age, and has reached its peak in the mid 1990s. During this long period a number of warming and cooling phases took place, and were earlier often much stronger; the last pronounced warming phase took place in the first half of the 20th century, before man made carbon emissions; and since 1998 a new cooling phase has started in many regions of the earth, and is still taking place and is at times quite stark. The results of the evaluation will be published after the conclusion of a comprehensive analysis. ‘Our CO2’ has not had any real impact on this development.”