Tag Archives: Antarctica

Antarctic ice sheet melt not so alarming after all

“So, if the Antarctic ice sheet weighs 26,500,000 gigatonnes or 26500000000000000 tonnes

252 billion tonnes is 252 gigatonnes

Really simple math says:  252gt/26,500,000gt x 100 = 9.509433962264151e-4 or 0.00095% change per year

But this is such a tiny loss in comparison to the total mass of the ice sheet, it’s microscopic…statistically insignificant.” click here

Seabed volcanoes influence West Antarctic glacier melts

“New evidence now updates and confirms a column I wrote in June 2014 that some or all of the highly publicized melting of western coastal Antarctic glaciers may be caused by seabed volcanoes rather than having much or anything to do with climate change.” click here

How to lie with maps and data smoothing – NASA

“Here is an infographic I prepared that illustrates the problem. There’s only one datapoint, the Amundsen-Scot south pole station, where there data from it is being smeared over a 1200 kilometer radius in the image above on Reddit, but in the image below, using the controls available at NASA GISTEMP, set to the 250 kilometer smoothing, we can see lots of missing data in Antarctica:” click here

Only mm of sea level rise expected if Antarctic ice shelf melts

“The new study shows that a collapse of Larsen C would result in inland ice discharging about 4 mm to sea level, while the response of glaciers to George VI collapse could contribute over five times more to global sea levels, around 22 mm.” click here

Lowest surface temperature on earth measured near East Antarctic divide

Scambos, T.A., Campbell, G.G., Pope, A., Haran, T., Muto, A., Lazzara, M., et al. (2018). Ultralow surface temperatures in East Antarctica from satellite thermalinfrared mapping: The coldest places on Earth. Geophysical Research Letters, 45. https://doi.org/10.1029/2018GL078133

We identify areas near the East Antarctic ice divide where <−90 °C surface snow temperatures are observed in wintertime satellite thermal‐band data under clear‐sky conditions. The lowest temperatures are found in small (<200 km2) topographic basins of ~2 m depth above 3,800 m elevation. Approximately 100 sites have observed minimum surface temperatures of ~−98 °C during the winters of 2004–2016. Comparisons of surface snow temperatures with near‐surface air temperatures at nearby weather stations indicate that ~−98 °C surfaces imply ~−94 ± 4 °C 2‐m air temperatures. Landsat 8 thermal band data and elevation data show gradients near the topographic depressions of ~6 °C km−1 horizontally and ~4 °C m−1 vertically. Ultralow temperature occurrences correlate with strong polar vortex circulation. We discuss a conceptual model of radiative surface cooling that produces an extreme inversion layer. Further cooling occurs as near‐surface cold air pools in shallow high‐elevation topographic basins, moderated by clear‐air downwelling radiation and heat from subsurface snow.

Antarctic ice on the increase

“Despite all the alarmist claims of an Antarctic meltdown, it is well known that the trend for sea ice extent at the South Pole has been one of growing ice rather than shrinking ice over the past 4 decades.” click here

Antarctic Penguins are doing just fine, thank you

“The 1.5 million penguins were spotted on the Danger Islands, a chain of nine rocky islands off the Antarctic Peninsula’s tip, near South America.” click here