ICE - SPOT THE DIFFERENCE

[marchesarosa]

SPOT THE DIFFERENCE

Take a look at these two graphs of the same thing, Arcticsea ice extent 1979-2010.


Here is another graph, from the same source (NSIDC) based on annual average raw data and with a true sea ice extent comparator on the vertical y-scale.





You won’t find the above graph being used as the scary poster child of cataclismic anthropogenic global warming because it merely shows a thirty-year, trend (there was NO satellite measurement before that) that is not in the least frightening to anyone not taking their “science” diluted with a large addition of adrenalin.

It shows a trend for average Arctic sea ice that, IF continued (big IF) won’t reach zero until the year 2385. So much for the frantic claims of a rapidly impending ice-free Arctic.

See the full article here
wattsupwiththat.com/2010/05/24/the-sea-ice-monster-its-a-scaly-thing/

[marchesarosa]

Graph of Arctic Sea Ice Extent.

www.ijis.iarc.uaf.edu/en/home/seaice_extent.htm


Updated daily.

[visitor]

New record minimum volume for arctic ice at 4.3 thousand KMcubed at


neven1.typepad.com/blog/2011/09/piomas-august-2011.html

[marchesarosa]

A "record" minimum ONLY in the period of record, i.e. since 1979, visitor.

It was probably as low as this before even within fairly recent history, as the comments here indicate

radio4scienceboards.proboards.com/index.cgi?board=witter&action=display&thread=599

Within a period of rising global temperature one would expect this reduction in ice, n'est-ce-pas? The only argument
is over whether this variation is natural or "anthropogenic".

Alarmists have definitely not demonstrated evidence for its being caused by CO2 rather than, for example, circulation of warmer water into the Arctic basin as a result of El Nino/La Nina or AMO ocean variation.

[visitor]

Sept 21, 2012 21:11:44 GMT marchesarosa said:

It was probably as low as this before even within fairly recent history

Wrong

Try getting your science from sources other than blogs

www.geotop.ca/pdf/devernalA/Kinnard_et_al_nature_2011.pdf

Arctic sea ice extent is nowmore than two million square kilometres less than it was in the late twentieth century, with important consequences for the climate, the ocean and traditional lifestyles in the Arctic. Although observations show a more or less continuous decline for the past four or five decades, there are few long-term records with which to assess natural sea ice variability. Until now, the question of whether or not current trends are potentially anomalous has therefore remained unanswerable. Here we use a network of high-resolution terrestrial proxies from the circum-Arctic region to reconstruct past extents of summer sea ice, and show that— although extensive uncertainties remain, especially before the sixteenth century—both the duration and magnitude of the current decline in sea ice seem to be unprecedented for the past 1,450 years.

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[/quote]

Don't you get tired of being proven wrong every time?


PS - does anyone else think it odd that Marchesarosa edits posts from 2010 in 2012? Anyone would think she's trying to re-write history.

[marchesarosa]

Your linked article is proxies and models all the way down, visitor!

It also states:

"Sea ice cover is thermodynamically and dynamically controlled by both the atmosphere and the ocean. "

Try a couple of experiments of your own, visitor.

1] Have you ever tried warming a bath of cold water with a hair dryer?

2] Have you ever walked into a closed bathroom after the bath has been filled with hot water? Noticed any effect on the mirrors, perhaps?

Let's have no more of your atmospheric tail wagging the oceanic dog, please.

Oceanic temperature is in the driving seat when it comes to the coupled ocean/atmosphere system. Land temperatures follow ocean temperatures with a lag of a few months.

Just try a little reading about El Nino/La Nina, visitor.




As for editing previous posts I simply inserted the latest graphs available so the lurkers can see what is being discussed.

[marchesarosa]

British Antarctic Survey Press Release

.....Professor Peck and his colleagues compared records of coastal glacial retreat (round the NW Arctic Peninsula) with records of the amount of chlorophyll (green plant pigment essential for photosynthesis) in the ocean. They found that over the past 50 years, melting ice has opened up at least 24,000 km2 of new open water (an area similar to the size of Wales) – and this has been colonised by carbon-absorbing phytoplankton. According to the authors this new bloom is the second largest factor acting AGAINST climate change so far discovered on Earth (the largest is new forest growth on land in the Arctic).

Professor Peck continues, "Elsewhere in the world human activity is undermining the ability of oceans and marine ecosystems to capture and store carbon. At present, there is little change in ice shelves and coastal glaciers away from the Antarctic Peninsula, but if more Antarctic ice is lost as a result of climate change then these new blooms have the potential to be a significant biological sink for carbon.".....

www.antarctica.ac.uk/press/press_releases/press_release.php?id=1041



The biosphere is SO VERY complex, isn't it?