Category Archives: Polar regions

by Donald Rapp, Ralf Ellis and Clive Best

A review of the relationship between the solar input to high latitudes and the global ice volume over the past 2.7 million years.

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by Dr. Ronan Connolly & Dr. Michael Connolly

Satellite observations indicate that the average Arctic sea ice extent has generally decreased since the start of the satellite records in October 1978. Is this period long enough to assess whether the current sea level trend is unusual, and to what extent the decline is caused by humans?

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by Greg Goodman

This year, as every year, there has been much excitement in the media about ‘catastrophic’ melting of Arctic sea-ice, run-away melting, tipping points, death spirals and “ice-free” summers.

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by Rud Istvan

Aitken et. al. in Nature newly comports to confirm 2015 fears about instability of the Totten Glacier in Eastern Antarctica. This could ‘suddenly’ raise sea level as much as 4 meters! (Or, based on the abstract, maybe only 0.9 meters in ‘modern scale configuration’, but over 2 meters [2.9-4] in unspecified other configurations).

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by Judith Curry

Arctic sea ice extent has been anomalously low this winter.

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by Judith Curry

I have prepared two new talks on sea ice to present in Nanjing.

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by Judith Curry

The seasonal forecasts of Arctic sea ice minimum have been submitted to annual SEARCH Sea Ice Outlook

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by Judith Curry

Rapidly melting Arctic sea ice, growing Antarctic sea ice, and concerns about the melting Thwaites glacier – can all of this be explained by anthropogenic global warming?

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by Judith Curry

“It is very likely that the annual Antarctic sea ice extent increased at a rate of between 1.2 and 1.8% per decade between 1979 and 2012.” –  IPCC AR5 

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by Judith Curry

“Arctic temperature anomalies in the 1930s were apparently as large as those in the 1990s and 2000s. There is still considerable discussion of the ultimate causes of the warm temperature anomalies that occurred in the Arctic in the 1920s and 1930s.” – IPCC AR5 Chapter 10

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by Judith Curry

The drama and the irony of  the Antarctic expedition stuck in summertime sea ice.

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by Judith Curry

The Arctic Ocean covers about 2.8% of the total Earth’s surface area   –  The Encyclopedia of Earth

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by Marcia Wyatt

UPDATE:  Addendum from Marcia Wyatt

UPDATE:  Giff Miller responds

Miller et al.’s 2013 paper – Unprecedented recent summer warmth in Arctic Canada – splashed into the public eye last week with the declaration that current average summer temperatures in the Eastern Canadian Arctic are warmer now than in any century in the past 44,000 years, and perhaps in the past 120,000 years.

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by Judith Curry

Arctic temperatures highest in at least 44,000 years.

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by Greg Goodman

On the deceleration in the decline of the Arctic sea ice.

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by Judith Curry

It looks like the Arctic sea ice is close to reaching its seasonal minimum, reflecting a substantial increase in sea ice relative to the record breaking minimum in 2012.

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by Judith Curry

Is the dramatic decline of Arctic sea ice, spurred by manmade global warming, making the  weather where we live more extreme?  Several recent studies have made this claim.  But a new study finds little evidence to support the idea that the plummeting Arctic sea ice has meaningfully changed our weather patterns. 

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by Judith Curry

It will be difficult — perhaps impossible — to avoid large methane releases in the East Siberian Sea without major reductions in global emissions of CO2.- Gail Whiteman, Chris Hope, Peter Wadhams

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