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Providing Insight
Into Climate Change
Polar Regions and Glaciers
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27 Articles
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Polar Region Sea Ice

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Here is a series of real time graphs of sea ice extent in the Arctic and Antarctic regions, as globally measured by satellites.

Mass Balance of the Greenland Ice Sheet from 1992 to 2018

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The paper combines many satellite measurements of changes in the ice sheet’s volume, flow and gravitational potential to produce a reconciled estimate of its mass balance. The ice sheet was close to a state of balance in the 1990s. Greenland lost 3,900 ± 340 billion tonnes (Gt) of ice between 1992 and 2018, causing a sea level rise (SLR) of 10.8 ± 0.9 mm. The average annual loss in the period was 150 Gt/yr causing a SLR of 0.41 mm/yr. The total ice loss from 2013 to 2017 was on average 222 Gt/yr causing a SLR of 0.61 mm/yr. 2018 ice loss is estimated at 150 Gt, causing a SLR of 0.41 mm.

Antarctic Specific Features of the Greenhouse Effect

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A research paper by the Helmholtz Centre for Polar and Marine Research in Germany presents a radiative analysis of the greenhouse effect over central Antarctica using measurements and models to shows that the greenhouse effect of CO2 is around zero or even negative in central Antarctica. An increase in CO2 concentration leads to an increased long-wave energy loss to space over central Antarctica, which cools the earth-atmosphere system. The most negative greenhouse effect occurs in autumn with its peak in March, which is also the season with the strongest surface cooling.

Antarctic Ice Expansion Shows Climate Models Are Unreliable

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Despite a 20 percent increase in atmospheric CO2 over 40 years, and model predictions to the contrary, sea ice in the Antarctic has expanded for decades. Such observations are in direct opposition to the model-based predictions of the IPCC. This should give pause for thought about climate alarmism in general. The IPCC report predicts a multi-model average decrease of between 16 and 67 percent in the summer and 8 to 30 percent in the winter by the end of the century (IPCC, 2013). Models simulations give a 1 million sq. km reduction is sea ice, but measurement show a 300,000 increase from 1980 to 2005 due to falling temperatures.

NASA Study Shows Antarctica is Gaining Ice at About 82 Billion Tonnes per Year

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A new NASA paper shows that the Antarctic Ice Sheet has grown in mass by about 82 billion metric tonnes of ice per year (Gt/yr) between 2003 and 2008. This article summarizes reviews by Jim Steele and Steve McIntyre. The ice gain estimate is based on altimeter satellite measurements and new Glacial Isostatic Adjustment (GIA)estimates. The IPCC AR5 reported that the ice sheet has been loosing mass at about 147 Gt/yr, but this was based on obsolete GIA estimates. GIA estimates impact the altimeter ice mass estimates by less than 17% of the impact on the gravity ice mass estimates.

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