Antarctic: ‘No role’ for climate in Halley iceberg splitting.
Antarctic Ice and Sea Level. Antarctic--Geothermal Activity. Antarctic--Other Drivers of Ice Extent. Antarctic--Longer-Term Reconstructions. Antarctic--Predictions. Antarctic--Recent Past. 20+ Scientists: ‘No Continent-Scale Warming Of Antarctic Temperature Is Evident In The Last Century’ Image Source: State of the Climate, 2016 For several decades now, Antarctica has not been cooperating with the “global” warming narrative, as the continent as a whole has not been warming. Several scientific papers have been published recently that document the lack of an anthropogenic warming signal for the Antarctic continent or the surrounding ocean, as well as the dominance of natural variability.
Smith and Polvani (2016) concluded that warming of West Antarctica or the Antarctic Peninsula are predominantly natural. “[We] conclude that there is little evidence of anthropogenic SAM-induced driving of the recent temperature trends … compelling evidence pointing to natural climate variability as a key contributor to the recent warming of West Antarctica and of the Peninsula“ “The annual mean temperature has decreased at a statistically significant rate, with the most rapid cooling during the Austral summer.” A 2,000-Year Cooling Trend For Antarctica, Uninterrupted By Rising CO2 Levels. A case to prove a point: The claims of major (ongoing) Antarctic Peninsula warming « Okulær.
Antarctic Peninsula Has Been Cooling For Almost 20 Years, Scientists Confirm | NOT A LOT OF PEOPLE KNOW THAT. By Paul Homewood From the “When it warms, it’s climate change; but when it cools, it’s natural variability” Dept: One of the big climate lies is that the Antarctic Peninsula is one of the fastest warming places on Earth. (The key word here is “IS”) This naturally leads on to propagation of the melting glaciers scare. As I have shown before, for instance here, temperatures rose there from the time when we started measuring temperatures in the 1950s till the 1980s. Now, a new study by researchers from the British Antarctic Survey confirm that temperatures on the Antarctic Peninsula have actually been falling since the late 1990s.
This is the press release from Science Daily: The rapid warming of the Antarctic Peninsula, which occurred from the early-1950s to the late 1990s, has paused. "Our study highlights the complexity and difficulty of attributing effect to cause. But let’s step back a moment. An Inconvenient Truth: Few Signs Of Global Warming In Antarctica | NOT A LOT OF PEOPLE KNOW THAT.
By Paul Homewood From the Daily Caller: Antarctica has confounded scientists, defying the dire predictions of scientists the South Pole would shrink and exacerbate sea level rise in the coming decades. Climate models predicted Antarctic sea ice would shrink as the world warmed, and that warming would boost snowfall over the southern continent. Neither of those predictions have panned out, and now scientists say “natural variability” is overwhelming human-induced warming. “Truth is, the science is complex, and that in most places and with most events, natural variability still plays a dominant role, and undoubtedly will continue to do so,” Chip Knappenberger, a climate scientist with the libertarian Cato Institute, told The Daily Caller News Foundation. Shouldn’t There Be More Snow? Antarctica is a tricky topic for scientists. The Ice Is Melting … Maybe Ice, Ice, Baby! Like this: Like Loading... Antarctic temperatures recently plunged close to the theoretically coldest achievable on Earth!
Guest inconvenience by David Middleton This story was previously discussed here at WUWT… But, why wasn’t this headline news in the Washington Post, New York Times, etc.? Yes… That was a rhetorical question. Ultralow Surface Temperatures in East Antarctica From Satellite Thermal Infrared Mapping: The Coldest Places on EarthT. A. Comparisons with nearby automated weather stations suggest that air temperatures during these events are near −94 ± 4 °C or about −138 F.
The full text of the paper is still available. How much colder could it have gotten at 280 ppmv CO2? In even plainer language… Jun 28, 2018, 12:58pm‘It’s Almost Like Another Planet’ – Coldest Temperature On Earth Recorded In AntarcticaTrevor Nace Contributor ScienceAs summer starts heating up, scientists just published the coldest temperature ever recorded on Earth. These findings, recently published in the journal Geophysical Research Letters, are close to the theoretical coldest temperature Earth can get down to. Like this: British Antarctic Snowfall Study Deepens the Mystery of Global Warming. Fake News about Holes in Antarctic Glaciers. CNN is breathless over a "Gigantic hole two-thirds the size of Manhattan discovered in Antarctic glacier. " I'm sure the reporters wish the hole actually were in Manhattan and included Trump Tower, but alas, the hole is far away from their nemesis, the president.
They describe it as "a massive cavity" that "has been discovered growing in an Antarctic glacier, signaling rapid ice decay that has shocked scientists. " It's growing at an "explosive rate" beneath the Thwaites Glacier, they anxiously report. CNN's primary concern is that the melting glacier will flood the world, including its television studios. How big is this "massive cavity"? It's just a small hole within a glacier the size of Florida.
Manhattan is about 23 square miles, so a hole two thirds the size of Manhattan would be almost 16 square miles. By comparison, Florida is 65,755 square miles. Not only CNN, but its other media brethren are also in a panic over this news. As the Antarctica.eu website describes it: The paradigm shift in Antarctic ice sheet modelling. Hotter, Colder–It’s Still Your Fault! By Paul Homewood h/t Dave Ward Emerging from the ice for a brief growing season every Antarctic summer, the lush green mosses of East Antarctica are finally succumbing to climate change.
That is according to a study of the small, ancient and hardy plants – carried out over more than a decade. This revealed that vegetation in East Antarctica is changing rapidly in response to a drying climate. The findings are published in the journal Nature Climate Change. "Visiting Antarctica, you expect to see icy, white landscapes," said lead scientist Prof Sharon Robinson from the University of Wollongong, in Australia. While West Antarctica and the Antarctic Peninsula are some of the fastest warming places of the planet, East Antarctica has not yet experienced much climate warming, so the scientists did not expect to see much change in the vegetation there. "But we were really surprised when we saw how fast it was changing," Prof Robinson said. "After a pilot study in 2000, we set up monitoring in 2003. Antarctica is rising in response to change that started with end of last ice age. How fast can Antarctica rise when the ice melts? Earth finally free to rise after hundreds of thousands of years of ice suppression.
That, of course, is a provocative statement, however, from the point of view of the Earth, it is actually true. The Pine Island, Thwaites, Haynes, Smith and Kohler Glaciers, located in the Amundsen Sea Embayment of West Antarctica (see the map below), have been the stars of many alarming headlines regarding the accelerating pace of ice melt (also here and here), the possible collapse of the West Antarctic ice sheet, and sea level rise. And it is true: The Amundsen Sea Embayment is one of the most important regions of the world in terms of ice melt. These glaciers contain enough ice to cover an area the size of Denmark (43,000 square kilometres) with more than 11 kilometres of ice, which would raise the global sea level by 1.2 metres if it were to melt all at once. Our new study published in Science has some answers.
Parts of West Antarctica are rising Like this: The Truth about Antarctica's Larsen C Ice Floe. Why Gravity Data Is Worthless In The Hands Of Climate Scientists. Graphs like the one above purporting to ice loss in Greenland and Antarctica are worthless, for several reasons. The are generated by people with a global warming agenda who don’t understand the mathematics and science underlying their calculations.Gravity data shouldn’t change as the ice grows or melts. 9.4 Isostasy – Physical Geology The Greenland ice sheet is two miles thick and is is very heavy.
It’s weight depresses the crust and causes the mantle to be displaced to the sides. The mass of displaced mantle is approximately equal to the mass of the ice sheet. If the ice sheet was growing, it would cause an equal mass of mantle to be displaced to the sides. If the ice sheet was shrinking, it would cause an equal mass of the mantle to flow back under the ice sheet. Climate scientists aren’t very bright, and don’t understand the basics of geology and geophysics. estimates failed to account for glacial isostatic adjustment Climate Change: New Study Halves the Rate of Ice Cap Melt | TIME.com. NSF study: ‘…current carbon dioxide levels are not enough to destabilize the land-based ice on Antarctica’ We covered this yesterday, but today the official press release came out, so worth covering again. Via Eurekalert Land-based portion of massive East Antarctic ice sheet retreated little during past eight million years But increases in atmospheric carbon dioxide levels could affect stability and potential for sea level rise Large parts of the massive East Antarctic Ice Sheet did not retreat significantly during a time when atmospheric carbon dioxide concentrations were similar to today’s levels, according to a team of researchers funded by the National Science Foundation (NSF).
The finding could have significant implications for global sea level rise. The East Antarctic Ice Sheet is one of three major ice sheets closely watched by scientists as global temperatures and carbon dioxide levels increase, glaciers melt and sea levels rise. The findings were published today in the journal Nature. This is image is by Peter Rejcek / NSF. Shakun’s co-authors on the paper include Carling C. Like this: New Paper Debunks Ad Hoc ‘Explanation’ That Antarctic Sea Ice Has Been Growing Since ’80s Due To Human Activity. “In science and philosophy, ad hoc means the addition of extraneous hypotheses to a theory to save it from being falsified. Ad hoc hypotheses compensate for anomalies not anticipated by the theory in its unmodified form. Scientists are often skeptical of scientific theories that rely on frequent, unsupported adjustments to sustain them. Ad hoc hypotheses are often characteristic of pseudoscientific subjects such as homeopathy.” — Wikipedia on the scientific definition of ad hoc hypotheses Observational evidence indicates that Antarctic sea ice has been advancing in recent decades, a trend that has puzzled climate modelers who assume that a warming globe will inhibit sea ice growth.
About 86% of all climate models have indicated that sea ice would show a declining trend for Antarctica, and just 14% (1 out of every 7) concluded sea ice extent would advance. Shu et al., 2015 Ackley et al., 2015 Nature News, 2013 UK Daily Mail (2014) Pauling et al., 2016 Fan et al., 2014 Doran et al., 2002. New Antarctic Sea Ice Video – shows cycles and ice growth | Watts Up With That? Antarctic Sea Ice Complete Video by Jeff Id , reposted here by invitation.
The video animation Jeff put together is well worth watching, see it below the “read more” line. – Anthony Figure 1 - Wilkins Ice Shelf - A map of the Antarctic Peninsula with the location of the the Wilkins Ice Sheet, which is on the southern portion of the peninsula. Credit: British Antarctic Survey Antarctic temperatures and sea ice are becoming quite a hobby. The melting of the Wilkins ice shelf has happened over and over prompting numerous articles like the following. Wilkins Ice Shelf About to Break Off and Alter the Map of Antarctica Vast Antarctic Ice Shelf on Verge of Collapse The headlines are truly endless and will continue this year as well. Here is a video which is particularly pertinent in it’s discussion and the fact that it ends with a discussion of climate science by Hillary Clinton. Wilkins Ice Shelf Collapse Video Figure 2 The annual variance of the sea ice is shown in Figure 3. Like this: Greenhouse gases are warming the world—but chilling Antarctica. Here’s why.
The greenhouse gases that are warming the globe actually cool Antarctica much of the year, a new study confirms. The odd trend doesn’t break the laws of physics, but it does highlight what a strange place Earth’s southernmost continent truly is. Antarctica is home to many extremes. It’s the world’s highest continent, with an average elevation just a shade under 2300 meters.
And despite its ice, it’s technically a desert thanks to a paucity of precipitation. This lack of moisture is one of the key factors behind the region’s “negative greenhouse effect,” says Sergio Sejas, an atmospheric scientist at NASA’s Langley Research Center in Hampton, Virginia, who led a newly published investigation of this atmospheric quirk. Cool greenhouse gases high in Earth’s atmosphere typically trap heat by absorbing infrared radiation emitted by our planet’s warm surface before it reaches space. In general, CO2 is thoroughly mixed throughout the atmosphere. Antarctic Sea Ice Claims Don’t Stand Up To Scrutiny | NOT A LOT OF PEOPLE KNOW THAT. By Paul Homewood From Yahoo: A few days ago, the US National Snow and Ice Data Center announced that the Antarctic sea ice contracted to just 883,015 sq. miles, which is the smallest on record. Experts assert that, if changes are not made to pollution and our fossil fuel industry, a number of species will be threatened as sea levels (and temperatures) continue to rise.
The Antarctic ice sheet goes through a cycle of expansion and contraction every year. Ultimately, the ice that exists around the continent melts during the southern hemisphere’s summer, which occurs towards the end of February, and expands again when autumn sets in. However, that melting is increasing dramatically. This week, the US National Snow and Ice Data Center (NSIDC) announced that the sea ice contracted to just 883,015 sq. miles (2.28m sq. km). NSIDC’s propagandist in chief, Mark Serreze, is quite clear:
A Review of the Record 2013 Southern Hemispheric Sea-Ice Extent. Paper Reviewed Reid, P., Stammerjohn, S., Massom, R., Scambos, T. and Lieser, J. 2015. The record 2013 Southern Hemisphere sea-ice extent maximum. Annals of Glaciology 56: 99-106 Although sea-ice extent in the Northern Hemisphere has been declining for quite some time, Reid et al. (2015) report that the sea-ice extent of the Southern Hemisphere has actually risen, and by approximately "1% per decade since 1979, the year when a continuous record of multi-frequency passive microwave satellite observations began," as has been described by Watkins and Simmonds (2000), Comiso and Nishio (2008), Turner et al. (2009), Comiso (2010) and Parkinson and Cavalieri (2012).
The five researchers also report that on the record-breaking day in 2013, "sea-ice extent was greater than the 30-year average (1981-2010) in nearly all Southern Ocean regions. " In fact, they say that "sea-ice extent was well above the long-term average or at a record for the entire year" (see figure below). Figure 1. World’s largest canyon could be hidden under Antarctic ice sheet | Watts Up With That?
From DURHAM UNIVERSITY Figure 1. Bed elevation (a.s.l. —above sea level) and ice surface morphologies in Princess Elizabeth Land, Antarctica. A: Bedmap2 digital elevation model (Fretwell et al., 2013) illustrating the locations of direct measurements and highlighting the areas without direct measurements. Grounding line data are from Scambos et al. (2007). ICECAP—International Collaborative Exploration of the Cryosphere through Airborne Profiling program. B: Moderate Resolution Imaging Spectroradiometer (MODIS) mosaic of Antarctica 2009 (Haran et al., 2014) showing north-south–trending linear features and an elongate and relatively featureless zone on the ice sheet surface (yellow box).
The world’s largest canyon may lie under the Antarctic ice sheet, according to analysis of satellite data by a team of scientists, led by Durham University. Although not visible to the naked eye, the subglacial landscape can be identified in the surface of the ice sheet. Like this: Like Loading... Can Humans Melt the Antarctic Icecap? ANTARCTIC KRILL DECLINE: Industrial fishing or Climate Change? - Principia Scientific International. The Velocities of Tributary Glaciers to Antarctica's Amery Ice Shelf.