[✔️] April 24, 2023- Global Warming News Digest |

Mon Apr 24 10:31:51 EDT 2023

/*April*//*24, 2023*/

/[ a favorite opinionist marked by the blue tape holding his microphone  
- in every video he does ] /
*Your Food Is Lying To You | Climate Town*
Climate Town
4/23/2023
The absolute newest eggs. Patreon: https://www.patreon.com/ClimateTown
sUbScRiBe FoR mOrE ViDeOs: https://www.youtube.com/c/climatetown

Carbon Collective: https://www.carboncollective.co/

And another special thanks to the Big Reuse for letting us film at their 
composting sites, right here in Brooklyn. If you want to get 
involved/volunteer with them, check out their Instagram 
(https://www.instagram.com/bigreuse/ ).

Waste Free Kitchen Handbook by Dana Gunders: 
https://www.nrdc.org/press-releases/n...

Date Labeling Thinking:
The Dating Gam [PDF] (NRDC/Harvard, 2013): 
https://www.nrdc.org/sites/default/fi...
Date Labels: The case for Federal Legislation [PDF]:
https://chlpi.org/wp-content/uploads/...
ReFED - Date Labeling Regulations
https://policyfinder.refed.org/spotli...
ReFED - Food Date Labeling Act (2021-22 Congress)
https://policyfinder.refed.org/federa...

https://youtu.be/4GDLaYrMCFo

/[  PBS reports on faster melting ice ]/
*Tensions rise as nations race for valuable resources in the Arctic*
PBS NewsHour
Apr 23, 2023
New research shows that climate change is causing the Earth’s ice sheets 
to shrink much faster than previously thought — the annual rate of sea 
ice loss has more than tripled since the 1990s. In the Arctic, melting 
ice is raising geopolitical tensions, kickstarting a global race for 
potentially priceless minerals, oil deposits and shipping routes. Lisa 
Desjardins reports.
https://www.youtube.com/watch?v=HQQ1h8rN57c

/[  information ]/
*Geothermal is going global!*
Just Have a Think
Apr 23, 2023
Geothermal energy has the potential to provide all our human energy 
requirements for millions of years. The trouble is we just can't easily 
get at it other than in areas of volcanic activity or along fault lines 
in the earth's tectonic plates. So geothermal energy has always remained 
a niche energy source - accounting for just 1% of global  energy. Now a 
Canadian company has developed a system that can work profitably 
anywhere in the world, regardless of geological conditions. This one 
could be a winner!!
Help support this channels independence at
http://www.patreon.com/justhaveathink

https://www.youtube.com/watch?v=gV92QFDb5qQ

- -

/[ here's the Eavor site]/
*Watch Our New Video*
How Eavor Works 2023
https://www.youtube.com/watch?v=eCrrm0v_460
https://www.eavor.com/

///[  What does our culture tell ? ]/
*What The Last of Us, Snowpiercer and 'climate fiction' get wrong*
Novels and films that tackle global warming can inadvertently lead to 
paralysis, writes Tyler Harper.
--
In the opening scene of The Last of Us, HBO's immensely popular zombie 
prestige drama, a pair of epidemiologists sit cross-legged on the set of 
a talk show in 1968. As the playfully mild-mannered host queries his 
guests about viral threats to the human species, one of the scientists – 
a man named Newman – responds that fungi, not viruses or bacteria, pose 
the greatest risk to mankind. The crowd jeers, but Newman presses on 
undaunted, suggesting that – were Earth's global temperatures to one day 
rise – an incurable fungal plague could become a very real possibility. 
Minutes later, we flash forward to a future in which a pandemic has led 
to the collapse of human civilisation by 2023, the epidemiologist's 
fungal prophecy fulfilled.
This opening is jarring, not least because it alerts viewers to the 
catastrophic dangers of planetary warming, only to implicitly critique 
them for not heeding that same message. Like the disregarded 
epidemiologist whose concern falls on deaf ears, HBO's drama is clear 
from the start that its zombie metaphor is meant as a thinly veiled 
warning about our own, all-too-real climate crisis. The implication of 
the talk-show scene and its apocalyptic aftermath are straightforward: 
the future will be a hellscape if you don't listen to the scientists.
- -
Part of the problem is that the genre – which is almost exclusively 
dystopian, operating in the model of "cautionary tale" – traffics in the 
kind of apocalyptic rhetoric that has long been shown to demotivate 
consumers of environmental media. Novels like Paolo Bacigalupi's The 
Water Knife or films like Bong Joon-Ho's Snowpiercer might be riveting 
climate thrillers, but their bleak storytelling doesn't exactly inspire 
the kind of can-do attitude that might help motivate their audience to 
get involved in the climate struggle. Indeed, since I began teaching 
climate fiction a few years ago, I have been struck by how many of my 
students – a number of whom are involved in the Youth Climate Movement – 
became demoralised after engaging with such works; convinced, at least 
momentarily, that climate activism is pointless.
- -
https://www.bbc.com/culture/article/20230418-what-snowpiercer-and-climate-fiction-get-wrong

/
/

/
/

///[  Following the marks of melting ice -- with real cuts, not 
conjectures ]/
*"It demonstrates the potential enormity of the problems society may 
face over the coming centuries" UiT scientists on the new data from the 
Barents Sea.*
New Barents Sea study points to how global sea level will continue to rise.
By Elizaveta Vereykina
April 20, 2023
A recently published study from geologists at UiT The Arctic University 
of Norway has provided new insight into what was happening beneath the 
Barents Sea ice sheet around 15,000 years ago. The data gathered will 
help to better understand the processes occurring under present-day 
climate change.
*
**What was discovered?*
According to a global consensus of scientists it is virtually certain 
that global sea level will continue to rise over the 21st century. For 
the 900 million people (1 in 10 globally) living in coastal zones around 
the world now, including in coastal mega-cities, this danger is 
particularly acute.

“Unravelling the glacial changes that occurred in the marine setting of 
the Barents Sea during the warming at the end of the last ice age is 
important as it gives us a unique long-term perspective into how ice 
sheets in Greenland and Antarctica today could respond in the future.” 
UiT researcher Dr Henry Patton says to The Barents Observer.

For the first time, this research which has been conducted over the last 
5 years, has put some numbers on how fast this former ice sheet in the 
Barents Sea retreated.

“Like the present-day ice sheets, this Barents Sea ice sheet was 
immense, reaching up to 3 km thick in places, but we are starting to 
think that the whole system collapsed very quickly, raising global sea 
level by many metres in just a few centuries,” says Patton.

Newly discovered seafloor deposits have provided new information on how 
fast this vast ice sheet was shrinking through the central Barents Sea 
15,000 years ago. The data the team found shows the ice sheet was 
retreating between 580 and 1600 m per year on average, for at least 91 
years. At this pace, most of the ice sheet is likely to have disappeared 
from across the entire Barents Sea within 1000 years, raising global sea 
level by around 6 m in the process.

This geological data shows that the continuous, fast retreat of ice 
sheets over many decades, and possibly centuries, is not unprecedented 
under a rapidly changing climate. Chronological data constraining this 
ice-sheet collapse has previously been a long-standing knowledge gap...

“If our numbers are correct this collapse event would have contributed 
to an extraordinarily fast pace of sea level rise, - Dr Patton says - 
and it demonstrates the potential enormity of the problems society may 
face over the coming centuries if the current ice sheets continue to 
destabilise”.

Yet, he added, pinning down these future quantities of melt over the 
coming decades and centuries is not straightforward as the feedbacks 
that operate between the oceans, climate and ice are highly nonlinear.

*How was it done? *
To uncover information about the glacial past published in this study, 
the UiT team has been surveying and mapping the Barents Sea area from 
research vessels since 2020. Sometimes scientists would stay on the 
research ship for up to three weeks. The team in their research also 
incorporated open data collected by the Norwegian Hydrographic Service 
through the MAREANO programme...
By piecing together these high-resolution snapshots surveyed from the 
Barents Sea floor - like in a jigsaw puzzle - a clearer picture of the 
glacial history of this region can emerge. The mapping included in this 
UiT study comes from a very remote region in the central Barents Sea, 
near the Norwegian - Russian border. Scientists believe this region 
hosted some of the last remnants of the last ice sheet before it finally 
melted away.

Here you can use a map demonstrating an interactive reconstruction of 
the Eurasian ice sheet during the last ice age
Such observational data are vital for guiding numerical simulations that 
try to reconstruct the behaviour of the old ice sheets. Lead researcher 
of the study, Dr Calvin Shackleton from the Norwegian Polar Institute in 
Tromsø, points out that satellite data, which has been used to monitor 
the present-day ice sheets over the last 40 years, are unable to observe 
the processes happening underneath the ice sheet. This makes the 
geological data left behind by these older ice sheets like in the 
Barents Sea such a valuable archive to investigate.

“The detection of traces of water at the interface between the ice sheet 
and seafloor is of importance as the water acts as a lubrication, 
allowing the ice above to flow faster and thus more quickly transfer its 
mass to the more climate-sensitive regions at lower elevations.”...
- -
https://thebarentsobserver.com/en/2023/04/it-demonstrates-potential-enormity-problems-society-may-face-over-coming-centuries-uit

- -

/[ last month in BBC News ]/
*Climate change: Norwegian seafloor holds clue to Antarctic melting*
By Jonathan Amos
BBC Science Correspondent
@BBCAmos
Antarctica's melting ice sheet could retreat much faster than previously 
thought, new research suggests.

The evidence comes from markings on the seafloor off Norway that record 
the pull-back of a melting European ice sheet thousands of years ago.

Today, the fastest withdrawing glaciers in Antarctica are seen to 
retreat by up to 30m a day.

But if they sped up, the extra melt water would have big implications 
for sea-level rises around the globe..
- -
This is the zone where glacier ice flowing off the land into the ocean 
becomes buoyant and starts to float. The corrugations are created as the 
ice at this location repeatedly pats the sediments as the daily tides 
rise and fall.

For the pattern to have been produced and preserved, the ice must have 
been in retreat (advancing ice would destroy the ridges); and the tidal 
"clock" therefore gives a rate for this reversal.

The team's results show the former European ice sheet underwent pulses 
of rapid retreat at speeds of 55m to 610m per day.

Importantly, the fastest rates were observed in places where the 
seafloor was relatively flat. These are locations where the ice above 
would tend to be more uniform in thickness and where less melting is 
required to make the ice float to aid its retreat.

Similar corrugations have been detected on the seafloor around 
Antarctica but the examples are quite limited in extent. The Norwegian 
study area is vastly greater and so gives a much clearer impression of 
how quickly ice can go backwards in a warming climate.

Today, scientists use satellites to monitor the grounding zones of 
Antarctica's ocean-terminating glaciers. The spacecraft can trace where 
the ice is being lifted and lowered on the tides.

https://ichef.bbci.co.uk/news/976/cpsprodpb/505E/production/_128647502_antartica_map-nc.png.webp

The fastest retreat has been observed at Pope Glacier in the west of the 
continent, where an average rate of 33m a day was measured over a period 
of 3.5 months in 2017.

But Pope is not one of Antarctica's mightier glaciers. Scientists are 
more interested in behemoths such as Thwaites. This body of ice is the 
size of Britain and could raise global sea levels by half a metre, were 
it all to melt.

"Four kilometres inland of the current grounding line at Thwaites, there 
is a conduit-like channel where the seabed is flat. It is the perfect 
setting for this process of buoyancy-driven retreat," said co-author Dr 
Frazer Christie of the Scott Polar Research Institute (SPRI), Cambridge 
University, UK.

"We're talking about a small area compared with Thwaites' entire 
drainage basin, but even a short-lived, very rapid retreat will have 
implications for the future dynamics of the glacier."

Drs Batchelor and Christie say their team's observations will fine-tune 
the computer models that try to forecast Antarctica's destiny in an 
ever-warming world. At the moment, these models are missing important 
details of ice behaviour.

"But this is why we look into the geological past to tell us what's 
possible. Yes, we have satellites, but their records are very short - 
only 40 years or so," commented co-author Prof Julian Dowdeswell, also 
from SPRI.

"Importantly, the geological record is something that has actually 
happened. It's an 'observation' in the real world, not just in the 
computer model world," he told BBC News.
https://www.bbc.com/news/science-environment-65192825

- -

/[ news 3 years ago]/*
**Climate change: 'Stunning' seafloor ridges record Antarctic retreat*
Published 29 May 2020
https://ichef.bbci.co.uk/news/976/cpsprodpb/16F2A/production/_112549939_3.jpg.webp
https://www.bbc.com/news/science-environment-52845990

- -

/[ Great interactive map of ice ]/
*A new modelling perspective into the spatial and temporal patterns of 
#erosion beneath the Eurasian ice sheet during the last glacial cycle.*
https://icemap.rhewlif.xyz/

/[The news archive - looking back]/
/*April 24, 2007*/

April 24, 2007: PBS airs "Hot Politics," a "Frontline" special about the 
extensive efforts of the fossil fuel lobby to frustrate efforts to 
combat carbon pollution.

http://www.pbs.org/wgbh/pages/frontline/hotpolitics/

http://www.climatesciencewatch.org/2007/04/26/hot-politicspbs-frontline-program-and-extended-interviews-online/

http://www.pbs.org/wgbh/pages/frontline/hotpolitics/interviews/

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