Global cooling?

28th October, 2009 - Posted by admin - 1 Comment

Climate change skeptics are saying that the Earth has been cooling since 1998 and that this disproves that climate change is caused by human activity. A piece on the BBC website What happened to global warming? (9th October 2009) gives one example of the claim.

RealClimate.org has a piece to counter this view A warming pause? (6th October 2009).

Summarising the RealClimate piece:

  1. The claim about a warming pause uses cherry-picked data starting with the year 1998, which was a hot year at the end of a strong El Nino warm phase.
  2. The claim uses the Hadley Centre data set which excludes the fastest warming part of the planet – the Arctic.
  3. The GISS data from NASA does not show the “cooling” effect.

The RealClimate piece should not be taken as a criticism of the Hadley Centre – they deliberately miss out the Arctic region because there are no ground measuring stations there. The GISS data fills this gap by other readings.

But even using cherry-picked data the “no warming” claim will soon be invalid as the Earth has returned to an El Nino warm phase and even on Hadley data the “pause” will disappear.

Posted on: October 28, 2009

Filed under: Uncategorized

1 Comment

admin

December 12th, 2009 at 1:37 pm    


Taminohas a good post on this here: http://tamino.wordpress.com/2009/12/07/riddle-me-this/

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