Cancel all the claims by climate activists that global warming is decimating Antarctica. A peer-reviewed study recently published in one of the most prominent science journals destroys one of the most frequently asserted claims by climate activists – that climate change is warming Antarctica and melting the Antarctic ice sheet. The recent study confirms Antarctica has not warmed in the past 70 years and Antarctic ice cover is expanding rather than shrinking.
Writing in the journal Nature, scientists at Columbia University and the University of Victoria, British Columbia report, “The Antarctic continent has not warmed in the last seven decades, despite a monotonic increase in the atmospheric concentration of greenhouse gases.”
The scientists also observe that over the past several decades, “Antarctic sea ice area has modestly expanded.”
The scientists report that the topography of Antarctica, and particularly the size and distribution of Antarctic mountain ranges, play a large role in Antarctica’s stable (actually modestly cooling) environment.
The scientists published the image below, which shows how temperatures have changed during the past 30 years, compared to temperatures recorded between 1950 and 1980. Clearly, the vast majority of Antarctica is cooling, with warming occurring over just a small portion of the continent that juts out into the Southern Ocean.
Forget the claims of a warming Antarctica and remember the science – Antarctica is cooling, not warming.
[…] Read more at Climate Realism […]
You know what? Sea level IS rising. NOAA
https://tidesandcurrents.noaa.gov/sltrends/slrmap.html
says 1.7 mm/yr but elsewhere it they cough up different numbers.
Colorado University’s Sea Level Research Group
https://sealevel.colorado.edu/
says 3.3 mm/yr and 0.097 mm/yr² acceleration but two years ago they said 0.084 mm/yr² acceleration. So go figure.
But yes, sea level is rising at some rate and at some acceleration, my spread sheet says around 0.01 mm/yr², and the water has to be coming from somewhere. The best bet is the Arctic & Antarctic ice caps plus the receding alpine glaciers around the world. But regarding the ice caps, they can’t melt they’re below freezing nearly everywhere nearly all of the time. But they can and probably are calving more ice into the sea than falls as snow in the interior.
Regarding “Global Warming” “Climate Change” “The Climate Crisis” or whatever it’s being called these days, it’s mostly a gross exaggeration, political and not science if it ever was. A simple bumper sticker:
CO2 is NOT
a Problem
CO2 is probably on balance mostly beneficial NOAA
https://www.nesdis.noaa.gov/content/noaa-satellite-data-used-study-finding-significant-greening-earths-vegetative-areas
Tells us that increasing CO2 has caused increased greening which includes food production. But yes it should cause some warming. Raw physics says 1.2°C of warming per doubling of CO2. Whether it actually does that is up for grabs. Warming the oceans and causing sea level rise due to thermal expansion? Pull my other leg.
Steve Case – Milwaukee, WI
[…] Repost from Climate Realism […]
[…] Peer-Reviewed Study Confirms Antarctica Has Not Warmed in Last Seven Decades Cancel all the claims by climate activists that global warming is decimating Antarctica. A peer-reviewed study recently published in one of the most prominent science journals destroys one of the most frequently asserted claims by climate activists – that climate change is warming Antarctica and melting the Antarctic ice sheet. The recent study confirms Antarctica has not warmed in the past 70 years and Antarctic ice cover is expanding rather than shrinking. […]
Fact-checked!! https://planetwatch.org.uk/?p=256
Your site is lacking in facts
http://www.antarcticglaciers.org/antarctica/west-antarctic-ice-sheet/
The West Antarctic Ice Sheet is, in places, over 2000 m thick, with the geological floor well below sea level…..the Pine Island and Thwaites ice streams….are grounded below sea level and drain a large proportion of the West Antarctic Ice Sheet.
West Antarctica is surrounded by a strong clockwise circumpolar circulation. These currents play a significant role in the global thermohaline circulation, and are one of the reasons why Antarctica is so cold.
At shallower depths, Circumpolar Deep Water can move across the continental shelf and reach the underside of ice shelves, which it can rapidly melt due to its relatively warm temperatures.
This ice flow is partly constrained by buttressing ice shelves. The ice streams flow from an inland reservoir of ice towards the ocean, passing over a grounding line and, in places, into an ice shelf. Nearly all the precipitation received in West Antarctica eventually passes through these ice streams.
The basal sediments of West Antarctica comprise soft marine sediments. Combined with geothermal heating at the base, this is sufficient to allow glaciers to slide rapidly: see Glacial Processes.
https://www.spectator.co.uk/2019/08/ice-pack-of-lies/
In Antarctica, alarmists point to the present retreat of the Pine Island and Thwaites glaciers. But how can this retreat be unprecedented and indicative of catastrophic global warming when geological fieldwork indicates these glaciers retreated further 8,000 years ago?
Alarmists may allege that the present rate of glacial retreat outstrips that of the past. But ice cores show such an argument is unwarranted. Dr Elizabeth Thomas and other scientists from Cambridge, England have examined Bruce Plateau, Ferrigno, and Siple Station ice-cores. These show the most dramatic rates of warming per decade in the last 308 years were not in recent decades, but in the decades between 1740 1789 and 1839 1888.
And (surprise, surprise!) at various times in the last 10,000 years the oceans have been much warmer than today. Professor Yair Rosenthal and others have used chemical analyses of marine fossils to show that ‘the deep ocean heat content in both hemispheres today is not only less than in the Medieval Warm Period (i.e. 1,000 years ago), but it is well below the deep ocean heat content in the very warm period scientists call the Middle Holocene Thermal Maximum, which occurred 10,000 years ago.’
Even if the Arctic Ocean becomes ice-free in the 21st century such an event is not ‘unprecedented’. Swedish scientists such as Stranne, Jacobsen and Björk, have uncovered evidence of an ice-free Arctic Ocean at various times between 14,700 and 6,000 years ago!
many studies and historical records show that Greenland was warmer during the Medieval Warm Period. The historical records left by the Norse settlers in southern Greenland from the 10th to the 14th Century tell of summer crops and cattle. But the real surprise came this year as Professor Axford and others unearthed evidence that a northern section of the Greenland ice sheet was at its warmest from 10,000 years to 6,000 years ago and was even smaller than today.
the North Ice Cap reached its present-day size circa 1850 AD, having been smaller than present through most of the preceding Holocene (2019).’
Historical studies are debunking the climate alarmism that has for too long driven the modern climate debate.
Better check out the history of the Heartland Institute – it has interesting connections.
Thank you for your study. We need to somehow push back against the “catastrophic climate change” dogma before the hysterics totally ruin our country to “fix” a non-problem.
Eric Youngstrom 4214 Owen Way Anacortes, Wa 98221