Record of Antarctic ice sheet response to climate cycles found in rock samples

Antarctica

Climate cycles and natural variability do exist then?! No need to re-visit those discussions. Quote: “One of the key findings is that the ice sheet was responding to temperature changes in the Southern Ocean”. The study says: ‘Our findings imply that oscillating Southern Ocean temperatures drive a dynamic response in the Antarctic ice sheet on millennial timescales, regardless of the background climate state.’
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By analyzing unusual rock samples collected years ago in Antarctica, scientists at the University of California, Santa Cruz, have discovered a remarkable record of how the East Antarctic Ice Sheet has responded to changes in climate over a period of 100,000 years during the Late Pleistocene, says Phys.org.

The East Antarctic Ice Sheet is the world’s largest ice mass. Understanding its sensitivity to climate change is crucial for efforts to project how much sea level will rise as global temperatures increase.

Recent studies suggest it may be more vulnerable to ice loss than previously thought.

What caused the world’s largest die-off of mangroves? A wobble in the moon’s orbit is partly to blame

2015 Gulf of Carpentaria mangrove die-off, from space [image credit: NASA]

Even the type of local tides was involved. Researchers conclude: we can chalk the 2015 mass death up to “natural causes.”
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Over the summer of 2015, 40 million mangroves died of thirst, says Phys.org.

This vast die-off—the world’s largest ever recorded—killed off rich mangrove forests along fully 1,000 kilometers of coastline on Australia’s Gulf of Carpentaria.

The question is, why? Last month, scientists found a culprit: a strong El Niño event, which led to a temporary fall in sea level.

That left mangroves, which rely on tides covering their roots, high and dry during an unusually dry early monsoon season.

Case closed. Or is it?

Faster in the Past: New seafloor images of West Antarctic Ice Sheet upend understanding of Thwaites Glacier retreat

Some like to call it the Doomsday Glacier. The research results are probably open to a variety of interpretations, in terms of predictions. But we’re told that whatever is being observed at present is by no means exceptional, making attempts at attribution of its ever-changing condition to human activity even more problematic. Volcanic activity is an obvious confounding factor here.
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The Thwaites Glacier in West Antarctica — about the size of Florida — has been an elephant in the room for scientists trying to make global sea level rise predictions, says Science Daily.

This massive ice stream is already in a phase of fast retreat (a “collapse” when viewed on geological timescales) leading to widespread concern about exactly how much, or how fast, it may give up its ice to the ocean.

The potential impact of Thwaites’ retreat is spine-chilling: a total loss of the glacier and surrounding icy basins could raise sea level from three to 10 feet.

Some Antarctic ice shelves grew in area over the last 20 years – study

Credit: British Antarctic Survey

Much ado about sea ice in recent times, but usually in terms of promoting climate alarm. On closer inspection East Antarctica (2/3rds of the continent) tells a somewhat different story.
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Some ice shelves in the eastern Antarctic have grown in the last 20 years despite global warming, a study suggests.

Researchers say that sea ice, pushed against the ice shelves by a change in regional wind patterns, may have helped to protect the ice shelves from losses, reports Yahoo News.

Ice shelves are floating sections of ice attached to land-based ice sheets and they help guard against the uncontrolled release of inland ice into the ocean.

Solar influences show up in sea level rise, El Niño events and oceanic climatic cycles

This won’t exactly be music to the ears of the climate alarmist tendency, which prefers to claim that people somehow dictate the course of climate variations.
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The Sun’s energy affects our climate but its influence is often ignored as changes in its intensity are very small. Its effect might be subtle but over decadal periods it adds up to being significant as a series of recent papers show, says Net Zero Watch.

Scientists from the University of California, Irvine, the National Taiwan Normal University, and the Institute of Atmospheric Physics, of the Chinese Academy of Sciences, Beijing, find that the 11-year solar cycle has a significant correlation with sea surface temperature variations in the North-eastern Pacific.

They believe that the Sun’s influence is first seen and then amplified in the lower stratosphere, but it then alters the circulation in the troposphere which then affects the temperature of the ocean.

They note that the changes have a structure similar to that of the Pacific meridional mode – an interaction between trade winds and ocean evaporation which is an important trigger of the central Pacific (CP) type of the El Niño-Southern Oscillation (ENSO).

Florida Gov. DeSantis brilliantly proposes plan to fight rising seas without any ‘left-wing stuff’

Miami, Florida [image credit: phys.org]

A practical approach to weather-related local problems, without any overblown climate alarm propaganda.
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FORT LAUDERDALE, Fla. — Gov. Ron DeSantis announced a series of steps to defend Florida against rising sea levels Tuesday, even as he denounced the use of the term “global warming” as a “pretext to do a bunch of left-wing things”, says Climate Depot.

The governor submitted 76 projects to the state Legislature to improve drainage, raise sea walls and take other steps to fight flooding across the state.

The state would spend about $270 million, with local matches typically required.

“We’re a low-lying state, we’re a storm-prone state, and we’re a flood-prone state,” DeSantis said at a news conference in Oldsmar, just outside Tampa.

Residents in Wales coastal village dubbed the UK’s first ‘climate refugees’

Doomed by predictions it seems. Although sea levels have been very slowly rising at a more or less known rate in many places around the world since about the mid-19th Century, predictions of an accelerating rate in the next decades are based on climate models, guesses at government climate policies and attribution of vast powers to trace gases. ‘Scientists say…’
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Like many others who came to Fairbourne, Stuart Eves decided the coastal village in northern Wales would be home for life when he moved here 26 years ago, says USA Today (from AP).

He fell in love with the peaceful, slow pace of small village life in this community of about 700 residents nestled between the rugged mountains and the Irish Sea.

“I wanted somewhere my children can have the same upbringing as I had, so they can run free,” said Eves, 72, who built a caravan park in the village that he still runs with his son. “You’ve got the sea, you’ve got the mountains. It’s just a stunning place to live.”

That changed suddenly in 2014, when authorities identified Fairbourne as the first coastal community in the U.K. to be at high risk of flooding due to climate change.

Predicting faster sea level rises and more frequent and extreme storms due to global warming, the government said it could only afford to keep defending the village for another 40 years.

Environment Agency’s alarmist climate report is partly based on an obsolete climate scenario

An obvious problem with the new Environment Agency report reportis its use of climate scenario RCP8.5, which has been widely discredited as unrealistic, impossible and so on. Surely that ought to render any related comments unsuitable as advice to a government. EA report extracts follow.
Air temperature and precipitation: We used RCP4.5 and RCP8.5 to represent climate scenarios that meet or exceed global warming +2°C and +4°C above pre-industrial by 2100.
Sea level rise: For our FCERM schemes we assess a range from the 70th to the 95th percentile of UKCP18 RCP8.5.
River flows: They are relative to a 1981-200 baseline and based on the 50th percentile of UKCP18 RCP8.5, which is consistent with at least a +4°C warming scenario by the end of the century.
Future weather: The projected values for future hot weather and wet weather are taken from UKCP Local (2.2 km) (Met Office, 2019), which complements the UKCP18 projections with data at a higher spatial and temporal resolution than previous climate projections, giving us greater detail on the 52 of 90 frequency and intensity of extreme weather. These projections are only available for a RCP8.5
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The Environment Agency has issued a stark warning on climate change: “Adapt or die”, says ITV News.

In a new report the Government body has preparations need to be made for the inevitable effects of climate change such as more flooding, an increased number of droughts and rising sea levels.

Study ‘projects’ a surge in US coastal flooding starting in 2030s

Credit: nationalreview.com

Anything supposedly ‘rapidly increasing’ or ‘extreme’ in Earth’s climate now or in the near future has to be treated with some suspicion, to say the least. Experience tells us alarmists armed with assumptions don’t need much excuse to go off the deep end to try and stir up the populace.
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In the mid-2030s, every U.S. coast will experience rapidly increasing high-tide floods, when a lunar cycle will amplify rising sea levels caused by climate change, predicts Phys.org.

High-tide floods—also called nuisance floods or sunny day floods—are already a familiar problem in many cities on the U.S. Atlantic and Gulf coasts. The National Oceanic and Atmospheric Administration (NOAA) reported a total of more than 600 such floods in 2019.

Starting in the mid-2030s, however, the alignment of rising sea levels with a lunar cycle will cause coastal cities all around the U.S. to begin a decade of dramatic increases in flood numbers, according to the first study that takes into account all known oceanic and astronomical causes for floods.

Led by the members of the NASA Sea Level Change Science Team from the University of Hawaii, the new study shows that high tides will exceed known flooding thresholds around the country more often.

Current climate model simulations overestimate future sea-level rise

Emperor penguins, Antarctica [image credit: USAF / Wikipedia]

Too much alarm coming from climate models, again. This new research finds ‘some regions near Antarctica even cool under climate change’.
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The melting rate of the Antarctic ice sheet is mainly controlled by the increase of ocean temperatures surrounding Antarctica.

Using a new, higher-resolution climate model simulation, scientists from Utrecht University found a much slower ocean temperature increase compared to current simulations with a coarser resolution, reports Phys.org.

New data reveals British sea level records stretching back 200 years

Credit: University of Liverpool / National Oceanography Centre (Liverpool branch)

The graph looks consistent with mild warming following the Little Ice Age. About 30 cms. or 1 foot of sea level rise in 130 years since 1890 is nothing remarkable. The average duration of solar cycles was longer in the 19th century than in the 20th but that trend is reversing now, with a lot more sunspot-free days per cycle. Climatic effects may follow.
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A study published by University of Liverpool scientists, alongside colleagues from the Liverpool branch of the National Oceanography Centre, has uncovered and analyzed new sea level records from the nineteenth century which show that the increased rate of the rise of British sea level took place from 1890 onwards, says Phys.org.

Nowadays, sea level measurements around the British Isles are made by tide gauges which record digitally and transmit the data automatically.

Why are hundreds of Pacific Islands growing despite rising sea levels?

In the Maldives

Just as the late Nils-Axel Mörner, a lifelong sea levels researcher, explained in an interview about two years ago. Let’s hope the climate miserablists now give up on their ‘drowning islands’ nonsense.
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New research says hundreds of islands in the Pacific are growing in land size, even as climate change-related sea level rises threaten the region, says ABC News Australia.

Scientists at the University of Auckland found atolls in the Pacific nations of Marshall Islands and Kiribati, as well as the Maldives archipelago in the Indian Ocean, have grown up to 8 per cent in size over the past six decades despite sea level rise.

They say their research could help climate-vulnerable nations adapt to global warming in the future.

Doggerland: How did the Atlantis of the North Sea sink?

Hypothetical map of Doggerland [image credit: ancient-origins.net]

This seems semi-topical on the day Britain signs off on its new deal with the EU countries. Going back into history, but not all that far back, the river Thames flowed into the Rhine. North Sea trawlers still find bones of mammoths and other such fossils in their nets today.
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For a long time, scientists believed that a powerful tsunami destroyed Doggerland 8,200 years ago, says DW.com.

Sediment analysis now suggests that the land once connecting Great Britain with the rest of Europe had a later demise.

Around 10,000 years ago, at the end of the last ice age, the sea level in northern Europe was still about 60 meters (197 feet) below what it is today.

The British Isles and the European mainland formed a continuous landmass.

Relatively large rivers crossed this landmass, but in a different way than we know today.

Newly discovered Greenland hot rock mantle plume drives thermal activities in the Arctic

Topographic map of Greenland

We’re told ‘The North Atlantic region is awash with geothermal activity’. Any day now we should be hearing how a few extra molecules of (human-caused) CO2 make the Earth’s innards hotter than they used to be. Or maybe we won’t.
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A team of researchers understands more about the melting of the Greenland ice sheet, says SciTech Daily.

They discovered a flow of hot rocks, known as a mantle plume, rising from the core-mantle boundary beneath central Greenland that melts the ice from below.

Gravity data reveal unexpected Antarctic ice variations

Antarctica

If they were hoping to see a steady rate of change that matched carbon dioxide emission levels, they were disappointed. Natural variations inconveniently got in the way, two in particular: ‘When two extreme snowfall events in 2009 and 2011 dropped around 600 gigatons of snow and ice, the East Antarctic Ice Sheet thickened so much that it temporarily halted the entire continent’s ice losses, said Wang—a pattern that had previously escaped notice.’
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A new analysis of long-term satellite records shows the East Antarctic Ice Sheet is unexpectedly dependent on fluctuations in weather.

This study may improve models of how much sea levels will rise, says Eos News.

As more coastal communities face the looming threat [Talkshop note: unsupported assertion] of rising sea levels, it’s more important than ever to accurately predict changes in one of the greatest potential sources of sea level rise—the melting of Antarctica’s massive ice sheet.

Recently, scientists analyzed nearly 2 decades’ worth of data from sensitive NASA satellites documenting mass changes in the Antarctic Ice Sheet.

They found the ice inventory ebbed and flowed across the continent in unexpectedly variable patterns.

Traditionally, some groups of Antarctic researchers have assumed the rate of change across the ice sheet is constant, but they drew their conclusions from data sets that spanned only a few years, said Lei Wang, a geodesist at The Ohio State University who will present this research at AGU’s virtual Fall Meeting 2020.

“These long data records give us the capability to characterize the ice sheet’s variation over a range of timescales,” rather than just modeling seasonal variations and short-term trends, Wang said.

Understanding Long-Term Trends

The Antarctic Ice Sheet, the largest mass of ice on Earth, is divided into two unequal portions, with the East Antarctic Ice Sheet covering about two thirds of the continent. The West Antarctic Ice Sheet, although smaller, has historically been more closely studied because it’s melting faster. (The East Antarctic Ice Sheet sits on bedrock above sea level, said Wang, so it is less susceptible to the effects of the warming ocean.) NASA estimates Antarctica has lost 149 billion metric tons of ice per year since 2002.

When so much ice is involved, projections of how sea levels will respond are uncertain—especially when trends already are so difficult to gauge.

Indeed, the field still argues about sea level changes in the past century, said Jim Davis, the study coauthor and a geodesist at the Lamont-Doherty Earth Observatory at Columbia University. “We’ve got to get to the point where we can talk about what’s happening this year in sea level change,” he said.

To do that, researchers need a more sophisticated model of how Antarctica’s shield of ice is evolving.

Full article here.

‘Unstoppable’ global warming claim withdrawn by Scientific Reports journal

Overblown warming claims, arising from climate modellers obsessing over trace gases, may be unstoppable but some measure of reality surfaces briefly here.
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A top scientific journal which claimed that global warming may already be unstoppable has been forced to issue a clarification after being accused of potentially causing “unnecessary despair”, says The GWPF.

Scientific Reports sought to publicise a study by Norwegian scientists with a doom-laden press release headlined: “Ending greenhouse gas emissions may not stop global warming.”

After being strongly criticised by leading British scientists, the journal issued a revised press release which admitted that the prediction was based on a particular computer model and said the results should be tested by “alternative models”.

EU report about vanishing beaches was alarmist and wrong, scientists say

Tropical beach

Another day, another false climate alarm bites the dust – or sand. It’s ‘flawed computer models’ time, again.
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Sandy beaches are much less vulnerable to rising seas than was claimed in a recent European Commission study which caused “unnecessary alarm”, research has found.

Beaches will survive by migrating landwards as the sea level rises as long as they are given space to move and not impeded by sea walls and other structures on the coast, the research shows.

The new findings contradict claims made in March in a study by the commission’s joint research centre, which supplies scientific evidence to guide EU policy, reports The Times (via The GWPF).

The study was publicised with a press release headlined “Climate Change: Life’s a (disappearing) beach”.

Florida current is weaker now than at any point in the past century

Image credit: NASA

And by coincidence (?) so is the sun.
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A key component of the Gulf Stream has markedly slowed over the past century—that’s the conclusion of a new research paper in Nature Communications published on August 7, says Phys.org.

The study develops a method of tracking the strength of near-shore ocean currents using measurements made at the coast, offering the potential to reduce one of the biggest uncertainties related to observations of climate change over the past century.

“In the ocean, almost everything is connected,” said Christopher Piecuch, an assistant scientist in the Physical Oceanography Department at the Woods Hole Oceanographic Institution (WHOI) and author of the study. “We can use those connections to look at things in the past or far from shore, giving us a more complete view of the ocean and how it changes across space and time.”

Piecuch, who specializes in coastal and regional sea level change, used a connection between coastal sea level and the strength of near-shore currents to trace the evolution of the Florida Current, which forms the beginning of the Gulf Stream.

The Gulf Stream flows north along the Southeast Atlantic Coast of the United States and eventually east into the North Atlantic Ocean, carrying heat, salt, momentum, and other properties that influence Earth’s climate.

Because nearly continuous records of sea level stretch back more than a century along Florida’s Atlantic Coast and in some parts of the Caribbean, he was able to use mathematical models and simple physics to extend the reach of direct measurements of the Gulf Stream to conclude that it has weakened steadily and is weaker now than at any other point in the past 110 years.

One of the biggest uncertainties in climate models is the behavior of ocean currents either leading to or responding to changes in Earth’s climate. Of these, one of the most important is the Atlantic Meridional Overturning Circulation, or AMOC, which is a large system or “conveyor belt” of ocean currents in the Atlantic that includes the Gulf Stream and that helps regulate global climate.

Piecuch’s analysis agrees with relationships seen in models between the deeper branches of the AMOC and the Gulf Stream, and it corroborates studies suggesting that the deeper branches of AMOC have slowed in recent years.

Full article here.

Solar cycle 14 – was the fourteenth solar cycle since 1755, when extensive recording of solar sunspot activity began. The solar cycle lasted 11.5 years, beginning in January 1902 and ending in July 1913. The maximum smoothed sunspot number (SIDC formula) observed during the solar cycle was 107.1, in February 1906 (the lowest since the Dalton Minimum) – Wikipedia

Island ‘drowning’ is not inevitable as sea levels rise

Another bunch of climate alarmist predictions get exposed as over-the-top doom-mongering — literally, in this case.

Coral reef islands across the world could naturally adapt to survive the impact of rising sea levels, according to new research reported at Phys.org.

Coral reef islands across the world could naturally adapt to survive the impact of rising sea levels, according to new research.

The increased flooding caused by the changing global climate has been predicted to render such communities—where sandy or gravel islands sit on top of coral reef platforms—uninhabitable within decades.

However, an international study led by the University of Plymouth (UK) suggests that perceived fate is far from a foregone conclusion.

Is There A Relationship Between Global Temperature And Ocean Levels? Sure, But…

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Better to follow the actual observations than the Hollywood-style scenarios of headline-chasing climate alarmists.

PA Pundits - International

By Dr. Jay Lehr~

Alarms over rising oceans continue to sound. Politicians, actors, authors, and “climate activists” warn us regularly that the massive ice sheets in the Antarctic, and the Arctic, are melting. They remind us that in a matter of decades, oceans will rise to the point where they will destroy many coastal cities, and the process would become “irreversible.” The International Panel on Climate Change (IPCC) and the media have speculated and prophesied that by 2100, we would have ocean levels between five to ten feet higher.

Graphic photoshopped pictures of New York skyscrapers show buildings flooded several floors high. Miami is shown vanishing under the sea. All said to be a result of increasing CO2 followed by melting ice resulting in a rise in our ocean levels.Most of our readers suspect great exaggeration but do not understand…

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