[✔️] March 31. 2024 Global Warming News | Ice lurches forward, Hope v hopium, Hansen paper, Dis and Mis information, Key findings and report, Heat waves slower, 2009 Keith Olbermann and Maddow

[Richard Pauli]

/*March*//*31, 2024*/

/[ ~3 inches, twice a day ]/
*Largest ice shelf in Antarctica lurches forward once or twice each day*
by Talia Ogliore, Washington University in St. Louis
MARCH 29, 2024
In Antarctica, heavy glaciers are always on the move. Conveyor belts of 
ice, known as ice streams, are the corridors of faster flow that carry 
most of the vast glaciers' ice and sediment debris out toward the ocean.
One such ice stream jostles the entire Ross Ice Shelf out of place at 
least once daily, according to new research from Washington University 
in St. Louis.

This finding is significant because of the scale of the Ross Ice Shelf: 
It is the largest ice shelf in Antarctica, about the same size as the 
country of France.

"We found that the whole shelf suddenly moves about 6 to 8 centimeters 
(or 3 inches) once or twice a day, triggered by a slip on an ice stream 
that flows into the ice shelf," said Doug Wiens, the Robert S. Brookings 
Distinguished Professor of earth, environmental and planetary sciences 
in Arts & Sciences. "These sudden movements could potentially play a 
role in triggering icequakes and fractures in the ice shelf."

The Ross Ice Shelf is a floating lip of ice that extends out over the 
ocean from inland glaciers.

Scientists are interested in interactions between ice shelves and ice 
streams in part because they are concerned about the stability of 
Antarctica's ice shelves in a warming world.

Ice shelves act as brakes for glaciers and ice streams, slowing their 
journey to the sea where they melt, thus allowing more ice to accumulate 
on the continent. If an ice shelf collapses, this support disappears, 
and the glaciers are free to flow faster. Once they flow into the ocean, 
they contribute to sea level rise.

The new study, in Geophysical Research Letters, focuses on movement 
triggered by the Whillans Ice Stream, one of about a half-dozen of the 
large, fast-moving rivers of ice pouring into the Ross Ice Shelf.

"One would not detect the movement just by feeling it," Wiens said. "The 
movement occurs over a time period of several minutes, so it is not 
perceptible without instrumentation. That's why the movement has not 
been detected until now, even though people have been walking and 
camping on the Ross Ice Shelf since the time of the great explorers 
Robert F. Scott and Roald Amundsen."

*Sudden slipping*
The movement of the Ross Ice Shelf is triggered by a relatively 
sudden—in glacial terms—movement of the ice stream called a slip event. 
It is somewhat similar to the "stick-slip" that occurs along a fault 
before and during an earthquake.

Under the scenario that Wiens and his team observed, a large section of 
the Whillans Ice Stream, measuring more than 100 km by 100 km, remains 
stationary while the rest of the ice stream creeps forward. Then, once 
or twice per day, the large section lurches forward against the Ross Ice 
Shelf.

It can move as much as 40 cm (16 inches) in a few minutes, Wiens said.

Studies of ice streams over the past 50 years show some ice streams 
speeding up and others slowing down. Scientists can use seismographs to 
detect the sudden motion of the ice streams to help understand what 
controls this motion. Wiens and his team traveled to Antarctica in 2014 
to place the seismographs used in this study.

"I've published several papers about the Whillans Ice Stream slip events 
in the past but had not discovered that the whole Ross Ice Shelf also 
moves until now," Wiens said.

The researchers do not think that these slip events are directly related 
to human-caused global warming. One theory is that they are caused by 
the loss of water in the bed of the Whillans Ice Stream, making it more 
"sticky."

The stress and strains associated with slip events are similar to the 
stress and strain observed to trigger icequakes under different conditions.

"At this point, icequakes and fractures are just part of the normal life 
of the ice shelf," Wiens said. "There is a worry that the Ross Ice Shelf 
will someday disintegrate since other smaller and thinner ice shelves 
have done so. We also know that the Ross Ice Shelf disintegrated during 
the last interglacial period—about 120,000 years ago—and that caused 
rapid ice loss to the other glaciers and ice streams feeding into it."

/More information: Douglas A. Wiens et al, Ross Ice Shelf Displacement 
and Elastic Plate Waves Induced by Whillans Ice Stream Slip Events, 
Geophysical Research Letters (2024). DOI: 10.1029/2023GL108040

Journal information: Geophysical Research Letters /
https://phys.org/news/2024-03-largest-ice-shelf-antarctica-lurches.html#google_vignette



/[  Hope verses Hopium - 46 min reading ]/
*Crucial Update on Global Warming Acceleration by James Hansen and his pals*
Paul Beckwith
  Mar 29, 2024
Crucial Global Warming Update by James Hansen and his pals…
https://www.youtube.com/watch?v=mDPVQNtp4Ik

- -

/[ Hansen et al - latest paper ]/
*Global Warming Acceleration: Causes and Consequences*
12 January 2024
James Hansen, Makiko Sato, Reto Ruedy
*Abstract.* Record global temperature in 2023 helps reveal acceleration 
of global warming on
decadal time scales. The proximate cause of the acceleration is increase 
of Earth’s energy
imbalance, specifically a substantial darkening of the planet (decreased 
albedo) equivalent to
a CO2 increase of more than 100 ppm, although it is difficult to 
apportion the albedo change
between aerosol forcing and cloud feedbacks because of limited global 
measurements. Large
2023 warming is consistent with key findings in /Global Warming in the 
Pipeline/:
reduced aerosol cooling and high climate sensitivity. We expect record 
monthly temperatures to
continue into mid-2024 due to the present large planetary energy 
imbalance, with the 12-
month running-mean global temperature reaching +1.6-1.7°C relative to 
1880-1920 and
falling to only +1.4 ± 0.1°C during the following La Nina. Considering 
the large planetary
energy imbalance, it will be clear that the world is passing through the 
1.5°C ceiling, and is
headed much higher, unless steps are taken to affect Earth’s energy 
imbalance.

https://www.columbia.edu/~jeh1/mailings/2024/AnnualT2023.2024.01.12.pdf




/[  mis and dis information watch ]/
*Climate Reporting Resources/
/*A new report from Nielsen and Climate Central explores how and when 
local television news discussed climate change when covering recent 
extreme weather events. */
/**KEY CONCEPTS*

         Most adults in the U.S. (72%) are convinced that global warming
    is happening, yet only 58% understand that human activities are the
    main cause.

         Local news is uniquely positioned to fill these knowledge gaps
    and inform the public on the causes and consequences of climate
    change — especially during extreme weather events.

         A new report from Nielsen and Climate Central analyzed four
    recent extreme weather events in the U.S. to understand when and how
    local television news coverage discussed climate change.

         Audiences surged during these events. Related coverage that
    discussed climate change reached over 17 million people across the
    50 largest U.S. media markets.

         Attribution science was also reflected in television coverage,
    informing local audiences about the influence of human-caused
    climate change on extreme weather events as they unfold.
         A roundup of science-based reporting resources can help bring
    climate change context into a range of storie/s./

https://www.climatecentral.org/climate-matters/climate-reporting-resources/
/

/  - -
/

*Read the full report:* 
https://assets.ctfassets.net/cxgxgstp8r5d/46cnfTnpfdt1hSOthASKWO/1524be072be2b3248a82dc8267eba9b3/Climate-Central-report-v1-d06-FINAL.pdf

*Connecting the dots*
Local U.S. television coverage of extreme weather and climate change

*Key Findings *
Extreme weather events increasingly affect daily lives in the U.S. and 
across the globe. When such events occur,
local television news plays two key roles: preparing audiences for 
near-term hazards and informing audiences
about long-term changes in extreme events due to our warming climate. 
Local media has a powerful role to play
in keeping people safe and educating people to take action to reduce the 
impacts of climate change.
According to research published by the American Meteorological Society, 
local weather broadcasting is
extremely effective in raising awareness about climate change Feygina et 
al., 2020. This report analyzed
local television news coverage of four recent extreme weather events 
that had notable impacts in the U.S.
to understand when and how event-related coverage discussed climate 
change. The five key findings are:

    *1. When television segments with climate change context occur, they
    have high reach and impact.*
    Although just 5% of event-related segments provided climate change
    context those segments
    collectively reached more than 17 million people across the 50
    largest U.S. media markets. Even
    when they occur at relatively low frequency, television segments
    that provide climate change context
    during extreme weather events have a large and widespread impact.

    *2. Audiences surged during extreme weather events.*
    Local television news audiences grew dramatically in the most
    directly impacted media markets as
    extreme events unfolded, likely due to the breaking news nature of
    these events and the immediate
    threats they posed to public safety. Most notably, local television
    audiences doubled in Orlando
    (Hurricane Ian) and increased 78% in Los Angeles (Tropical Storm
    Hilary) compared to the week prior
    to each event. As extreme events occur, the public turns to local
    television broadcasts to stay
    prepared and informed.

    *3. Extreme heat was connected to climate change most often,
    reflecting the state of the science.*
    The extreme July 2023 heat streak in Phoenix accounted for almost
    half (48%) of all
    climate-contextualized segments across all four events.
    Significantly higher rates of climate
    contextualization during extreme heat events are notable because
    they broadly reflect the state of the
    science. Scientific confidence in the attribution of extreme heat to
    human-induced climate change is
    considerably higher than for any other type of extreme weather event.

    *4. Climate-contextualized segments highlight hazardous impacts.*
    An analysis of closed captioning text from contextualized segments
    found communicating the
    hazardous impacts extreme weather has on local communities was key.
    While all segments mentioned
    at least one event-related impact, nearly all (96%)
    climate-contextualized segments mentioned at
    least one major impact that fell into one of five categories: health
    and safety, vulnerable communities,
    power supply and demand, the economy, and travel disruption. The
    most frequently mentioned
    impacts were related to health and safety—consistent with the acute
    risks faced during extreme
    weather events. Contextualized segments on Canadian wildfires in
    June 2023 had the highest rate of
    health and safety mentions, reflecting the serious and widespread
    health risks from exposure to
    wildfire smoke.

    *5. Local news is a critical lever for raising science-based
    awareness about climate change.*
    Local newscasters, particularly broadcast meteorologists, have daily
    contact with the American public.
    They can inform audiences about how specific weather events are
    connected to rising temperatures
    and climate change. As extreme weather increases with climate
    change, viewers overwhelmingly turn
    to local news for answers. For example, during Hurricane Ian, local
    news streaming apps in Orlando
    saw increases of over 244% for persons aged 2 and up and 395% for
    persons aged 25-54. Local
    broadcasters play a crucial role in keeping the public safe and
    empowering people to make informed
    decisions

https://assets.ctfassets.net/cxgxgstp8r5d/46cnfTnpfdt1hSOthASKWO/1524be072be2b3248a82dc8267eba9b3/Climate-Central-report-v1-d06-FINAL.pdf




/[  What is happening now?  ]/
*Heat Waves Are Moving Slower and Staying Longer, Study Finds*
Climate change is making heat waves linger for longer stretches of time, 
exacerbating the effects of extreme temperatures.
By Delger Erdenesanaa
March 29, 2024
When heat waves swept across large parts of the planet last summer, in 
many places the oppressive temperatures loitered for days or weeks at a 
time. As climate change warms the planet, heat waves are increasingly 
moving sluggishly and lasting longer, according to a study published on 
Friday.

Each decade between 1979 and 2020, the rate at which heat waves travel, 
pushed along by air circulation, slowed by about 5 miles per day, the 
study found. Heat waves also now last about four days longer on average.

“This really has strong impacts on public health,” said Wei Zhang, a 
climate scientist at Utah State University and one of the authors of the 
study, which appeared in the journal Science Advances.

The longer heat waves stick around in one place, the longer people are 
exposed to life-threatening temperatures. As workers slow down during 
extreme heat, so does economic productivity. Heat waves also dry out 
soil and vegetation, harming crops and raising the risk of wildfires.
These changes to heat wave behavior have been more noticeable since the 
late 1990s, Dr. Zhang said. He attributes the changes in large part to 
human-caused climate change, but also in part to natural climate 
variability.

The study is among the first to track how heat waves move through both 
space and time.

Rachel White, an atmospheric scientist at the University of British 
Columbia who wasn’t involved in the paper, said she had been waiting to 
see research like this.
“We know that climate change is increasing the intensity of heat waves. 
We know climate change is increasing the frequency of heat waves,” Dr. 
White said. “But this study really helps us understand more about how 
that’s happening.”

Dr. Zhang and his colleagues analyzed temperatures around the world 
between 1979 and 2020. They defined heat waves as contiguous areas 
reaching a total of 1 million square kilometers (247 million acres) or 
more, where temperatures rose to at least the 95th percentile of the 
local historical maximum temperature (basically, enormous blobs of 
unusually hot air). The heat waves also had to last for at least three 
days. The researchers then measured how far these giant air masses moved 
over time to calculate their speed.

Over all the years they studied, heat waves slowed down by about 8 
kilometers per day each decade, or nearly 5 miles per day each decade.
The average life span of heat waves has also stretched out: From 
2016-20, they persisted for an average of 12 days, compared with eight 
days from 1979 to 1983. These longer-lived heat waves are also traveling 
farther, increasing the distance they travel by about 226 kilometers per 
decade.

The researchers also found that heat waves are becoming more frequent, 
to an average of 98 per year between 2016 and 2020, from 75 per year 
between 1979 and 1983.

There are some regional differences. Heat waves are lasting longer 
particularly in Eurasia and North America. And they are traveling 
farther particularly in South America.

To examine the role of climate change, the researchers used models to 
simulate temperatures in scenarios with and without the warming from 
human greenhouse gas emissions. They found that the scenario with these 
emissions was the best match for what has actually happened to heat wave 
behavior, indicating that climate change is a major force behind these 
trends.
Scientists have started to detect a larger pattern of air circulation 
and upper atmosphere winds like the jet streams getting weaker, at least 
during the summer at higher latitudes in the Northern Hemisphere. This 
could cause extreme weather events of all kinds to stall and overstay 
their welcome.

“It stands to reason that that would slow down the speed of heat waves,” 
said Stephen Vavrus, the state climatologist for Wisconsin. Dr. Vavrus 
studies atmospheric circulation but wasn’t involved in this research.

The new study did find a correlation between a weaker jet stream and 
slower heat waves. Dr. White, however, thinks more research is needed to 
determine whether the jet stream is truly the cause.

No matter the exact reasons for the slowdown, the harmful effects remain.

“It’s sort of multiple factors conspiring together,” Dr. Vavrus said. If 
heat waves become more frequent, more intense, last longer and cover a 
greater area, he said, “that really increases the concern we have for 
their impacts.”

Dr. Zhang is especially concerned about cities, which are often hotter 
than their surrounding areas because of the urban heat island effect. 
“If those heat waves last in the city for much longer than before, that 
would cause a very dangerous situation,” he said.

Alongside his atmospheric research, Dr. Zhang is helping with local 
efforts to plant more trees and grasses around bus stops in Salt Lake 
City, where people have to wait in the sun during increasingly hot 
summers. He suggested that cities build more cooling centers, especially 
for people experiencing homelessness.

“There are some things a community can do,” he said.

While waiting for international leaders to make progress on cutting 
greenhouse gas emissions and stopping climate change, Dr. Zhang said, 
local adaptation efforts are important to help keep people safer.
https://www.nytimes.com/2024/03/29/climate/heat-waves-longer-slower.html




/[The news archive of idiots in Congress ]/
/*March 31, 2009 */

March 31, 2009:

• MSNBC's Keith Olbermann rips denialist Rep. John Shimkus (R-IL):

"But our winner, Congressman John Shimkus, Republican of Illinois, with 
two fascinating and utterly contradictory statements.  A, Congressman 
Shimkus on why there isn‘t global warming.  'Today we have about 388 
parts per million of Carbon Dioxide in the atmosphere.  I think in the 
age of the dinosaurs, when we had most flora and fauna, we were probably 
at 4,000 parts per million. There‘s a theological debate that this is a 
carbon-starved planet, not too much carbon.'

"Number one, Carbon and Carbon Dioxide are not the same thing. Number 
two, the only theological debate over how much carbon the plan needs 
would be taking place in the church of the Labrea Tar Pits.  Number 
three, didn‘t the freaking dinosaurs go extinct?  Or do they just have a 
bad public relations person?

"But I‘m digressing.  B, Congressman Shimkus on why it doesn‘t matter 
anyway.  'The Earth will end only when God declares it‘s time to be 
over.  A man will not destroy this Earth.  This Earth will not be 
destroyed by a flood.  I appreciate having panelists here who are men of 
faith, and we can get into the theological discourse of that position.  
But I do believe that God‘s word is infallible, unchanging, perfect.'

"So a man pressing a button to start a nuclear war, that would be God‘s 
infallible word?  Why do we bother trying to govern?  Can‘t he do 
something about the budget deficit?  By the way, as you hit me over the 
head with your Bible, Congressman, there ain‘t a word in it about those 
dinosaurs you mentioned earlier.

"Congressman John Shimkus of Illinois, today‘s worst person in the world!"

http://www.youtube.com/watch?v=YBf75v2k3EE

• MSNBC's Rachel Maddow also mocks Shimkus during her "GOP in Exile" 
segment:

"While the Republican Party continues its search for mean in the 
minority, one Republican congressman, John Shimkus of Illinois, maybe 
should stop searching.  Just sit down, Congressman and take a breather, 
honestly.  Check this out:

"REP. JOHN SHIMKUS (R-IL):  Today, we have about 388 parts per million 
in the atmosphere.  I think in the age of dinosaurs, where we had more 
flora and fauna, we were probably at 4,000 parts per million.  There is 
a theological debate that this is a carbon starved planet, not too much 
carbon.

"MADDOW:  In other words, we shouldn‘t bother trying to reduce the 
amount of carbon dioxide in our atmosphere because the dinosaurs did 
just fine with the tons of carbon that God gave them for their 
atmosphere.  Also, the dodo bird ate plenty of cholesterol.  And the 
saber tooth tiger never, ever flossed.  Stop worrying, people."

http://www.youtube.com/watch?v=oF9z-QkeO-E




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