Climate Change News & Discussions

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caltrek
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As Climate Risks Mount, the Insurance Safety Net is Collapsing
by Lois Parshley
October 10, 2023
Introduction:
(The Grist) We’ve got ourselves a little monster out there,” anchorman Jim Cantore warned, facing the camera in the Weather Channel’s newsroom on a sultry August weekend in 1992. At first, few in Florida were paying attention. “It’s very hard to get people to believe that there’s some danger from some element of nature that they haven’t experienced before,” a reporter told Cantore, as the channel played tape of tranquil beaches and neat vacation homes.

As the storm approached Florida, it gained the moniker Andrew, rapidly intensifying into a Category 5 hurricane as it exceeded wind speeds of 165 mph. Karen Clark watched updates on TV from her home in Boston with fascinated horror — and her career on the line.

Most insurance companies at that time assessed hurricane exposure in their portfolios by simply multiplying customer premiums by a rough factor of supposed risk, rather than tracking actual property replacement costs. “They were just very crude formulas,” she said.

So in 1987, Clark had started her own company, Applied Insurance Research, or AIR, to develop software that better estimated the potential losses from catastrophic events. Unlike the rest of the industry, she used granular data and sophisticated analyses, an approach now called catastrophe modeling. Her first computer model estimated that a Category 5 hurricane hitting Dade County could cause losses almost 10 times more than previously believed. She warned her customers about the risk in Florida, but until Hurricane Andrew, no one listened. “The good ol’ boys at Lloyds [of London], you know, they thought they had it all figured out,” she said. “They didn’t need any help from this American woman carrying around a little computer.”

By that Sunday morning in 1992, it became clear that Andrew’s eye was aiming straight for Miami. Clark rushed into the AIR office, where her models suggested that the storm could cause at least $13 billion in damages — a disaster so expensive at first she debated whether she should publish the results.
The article goes on to note that Clark’s methodology became the industry standard. The article explains that despite that adjustment and the mechanism of reinsurance that helps spread the risk to different geographic regions, the insurance industry is still facing a deep crisis.


Read more here: https://grist.org/economics/as-climate ... apsing/
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Gulf Stream weakening now 99% certain, and ramifications will be global
published 1 day ago

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The Gulf Stream is almost certainly weakening, a new study has confirmed.

The flow of warm water through the Florida Straits has slowed by 4% over the past four decades, with grave implications for the world's climate.

The ocean current starts near Florida and threads a belt of warm water along the U.S. East Coast and Canada before crossing the Atlantic to Europe. The heat it transports is essential for maintaining temperate conditions and regulating sea levels.

But this stream is slowing down, researchers wrote in a study published Sept. 25 in the journal Geophysical Research Letters.

"This is the strongest, most definitive evidence we have of the weakening of this climatically-relevant ocean current," lead-author Christopher Piecuch, a physical oceanographer at the Woods Hole Oceanographic Institution in Massachusetts, said in a statement.
https://www.space.com/gulf-stream-weake ... P7e_ynDxXo
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To know is essentially the same as not knowing. The only thing that occurs is the rearrangement of atoms in your brain.
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Adding crushed rock to farmland pulls carbon out of the air, field test shows

https://phys.org/news/2023-10-adding-fa ... field.html
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2023's Annual CO2 Minimum at the Mauna Loa Observatory Is 3.02 PPM Higher than 2022's Annual Minimum.
https://gml.noaa.gov/ccgg/trends/weekly.html
Here is the most recent reported weekly average:

Week beginning on October 15, 2023: 419.46 ppm
Weekly value from 1 year ago: 415.82 ppm
Weekly value from 10 years ago: 393.98 ppm
Last updated: October 27, 2023
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UN University Report Warns About Risk Tipping Points with Irreversible Impacts on People and Planet
October 25, 2023

Introduction:
(Eurekalert) A United Nations University report today finds that drastic changes are approaching if risks to our fundamental socioecological systems are not addressed.

The Interconnected Disaster Risks Report 2023 published by the United Nations University – Institute for Environment and Human Security (UNU-EHS) warns of six risk tipping points ahead of us:

• Accelerating extinctions
• Groundwater depletion
• Mountain glaciers melting
• Space debris
• Unbearable heat
• Uninsurable future

Systems are all around us and closely connected to us: ecosystems, food systems, water systems and more. When they deteriorate, it is typically not a simple and predictable process. Rather, instability slowly builds until suddenly a tipping point is reached and the system changes fundamentally or even collapses, with potentially catastrophic impacts.

A risk tipping point is defined in the report as the moment at which a given socioecological system is no longer able to buffer risks and provide its expected functions, after which the risk of catastrophic impacts to these systems increases substantially. These diverse cases illustrate that risk tipping points extend beyond the single domains of climate, ecosystems, society or technology. Instead, they are inherently interconnected, and they are also closely linked to human activities and livelihoods.

Many new risks emerge when and where our physical and natural worlds interconnect with human society. One example of a risk tipping point that the report explains is groundwater depletion. Underground water reservoirs called aquifers are an essential freshwater resource around the world, and they supply drinking water to over 2 billion people. Around 70 per cent of groundwater withdrawals are used for agriculture, oftentimes when there is not sufficient water from above-ground sources available. Today, aquifers help to mitigate half of the losses in agriculture caused by drought, a phenomenon which is only expected to increase in the future due to climate change. But the report warns that now it’s the aquifers themselves that are approaching a tipping point:
Read more here: https://www.eurekalert.org/news-releases/1005071
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Couple more decades and then we're done, I think.

Hopefully the simulation ends around that time, and I "wake up" from this crazy world. A world in which we continue to pump out 40+ gigatons of emissions each year, while pretending we can go on expanding our exploration of oil and gas, which is somehow "compatible with Net Zero" and simply "must" be secured, "for decades to come" (Sunak's words).

-----

Carbon emissions threaten 1.5C climate threshold sooner than thought - report

1 hour ago

Human fossil fuel emissions are threatening a key climate threshold twice as quickly as previously thought, a new report says.

Researchers say the 1.5C limit could be continually breached by 2029, rather than the mid 2030s.

They say record emissions of carbon dioxide over the past three years are a key factor.

They also point to a having a better understanding of how the burning of fossil fuels affects the atmosphere.

After a year of unprecedented heat, with the world's hottest month recorded in July, temperatures for 2023 as a whole are expected to be close to 1.5C above the pre-industrial level, before the world first started heavily using coal, oil and gas around 1850.

https://www.bbc.co.uk/news/science-environment-67242386
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weatheriscool wrote: Mon Oct 30, 2023 8:25 pm "To retain the 50% chance of a 1.5C limit, emissions would have to plunge to net zero by 2034"
:lol:

I mean, it's just ludicrous.

1.5°C is enough to kill off 99% of coral reefs, btw. There are 0.5 billion people who depend on these for their livelihoods.

Never mind, I'm sure our government is on the case. Oh wait...

https://www.bbc.co.uk/news/uk-scotland-67261648
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