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Bob Bingham Blog page.

A series of opinion pieces on, mostly climate change and related subjects to do with New Zealand.

Back to home page.

No slowdown in global warming.

6/6/2015

2 Comments

 
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Recent research in the way that climate change is analysed shows that the recent ‘pause’ in global warming has been exaggerated and is in fact not there. 

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Measurements of the planets temperature through land based records were always going to be suspect because 70% of the surface of the planet  is water and 93% of the heat absorbed by the planet goes into the oceans, 3% is absorbed by the land, 3% is used by melting ice and only 1% is retained in the atmosphere. So although the 1% is of vital importance to us, as land based creatures, it is a very small part of the picture. We are in fact a water planet.

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Another big problem has been that we have good records of land temperatures and rainfall for over a hundred years since the thermometer became readily available, around 1870, but we know very little about what goes on in the oceans.
 To rectify this the Argo project placed 3500 buoys in the oceans to record temperature, salinity, acidity and flow  but these have only been on operation since 2004 which only gives us ten years of data and they only go down 1800 metres.  This still leave big areas of the vital Southern Ocean with few records and almost nothing of the ocean deeps.

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We have satellites circling the Sun and the Earth so we know  exactly how much heat is radiated from the Sun and hits the earth and we know how much heat is being radiated out into space and there is an imbalance which shows that the earth is absorbing heat and retaining it, but where does it go? If its not in the atmosphere it must be in the oceans but the difficulty has been in proving it and also in showing where it actually is. 
The warmer deep water is melting the ice shelves from below and going to give us a nasty surprise so what else does the ocean have in store for us?  


2 Comments
Bob Bristow
7/6/2015 05:38:43 pm

The so called pause or hiatus has been an overused argument from deniers for far too long, ever since David Rose published his cherry picked graph in the Daily Mail back in October 2012, the trouble is it has got a lot of publicity and may have convinced people who have not yet made up their minds. The same journalist made some pretty bad calls of judgement during the Iraq Weapons of Mass destruction era too. I'm surprised the Daily Mail continue with him.

NASA and JMA data show continence of an upwards trend, and of course with natural variance we get short term plateaus or downwards periods, but we exist on a much longer scale than that. What is more worrying is the rate of warming in the Arctic (at least double than elsewhere), and the transport of warm deep ocean currents to the East and West ice sheets of Antarctica.

I was glad to see New Zealand academics putting forward their views in today's NZ Herald.... I hope we can get out of the doldrums on this one.

NZ can do more to combat climate change - researchers

http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=11461356

Reply
Bob Bingham
8/6/2015 07:45:42 am

Thanks for your comments Bob.Some of the input in the Herald came fro our Antarctic scientist Tim Naish who led the Andril project in Antarctica and he has some good video on Vimeo https://vimeo.com/36454908 . He is one of my heroes and I went to see him at the Antarctic Research Centre in Wellington.

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    Bob Bingham 

    Occasional blog posts on topical news items concerning the climate.  Please click the RSS feed to receive updates.

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