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<font size="+2" face="Calibri"><i><b>April </b></i></font><font
size="+2" face="Calibri"><i><b>22, 2024</b></i></font><font
face="Calibri"><br>
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[ continuing understanding of tipping points - Beckwith reading ]<br>
<b>Cascading Tipping Points and Early Warning Signals showing a
Critical Slowing Down<br>
</b>Paul Beckwith<br>
Apr 21, 2024<br>
I chat about tipping point cascades in the climate system and Early
Warming Signals that show we are rapidly approaching a multitude of
tipping points. <br>
<br>
A good analogy is that of dominos, we often think of one chain of
dominos, where one topples the next, and so on until they all fall
down. Some tipping points are like this, but the AMOC collapse would
be more like parallel chains of dominos, where one domino tipping
hits 2 or 3 other dominos simultaneously, causing a multitude of
tipping chains, which is a greatly magnified effect.<br>
<br>
Let’s say the first thing that tips is the Arctic Sea Ice loss and
then massive Greenland Ice Sheet calving. This would inject large
amounts of fresh water into the Arctic, and the lighter water could
shut down the AMOC. This would cool the whole high-latitude Northern
hemisphere. Thus, it would stabilize and regrow Arctic Sea Ice,
Greenland, and slow down and even reverse permafrost loss. The
Southern Hemisphere would warm, the ITCZ would shift southward,
tropical monsoons would shift southward, the ENSO would likely
change to a near permanent El Niño, and we would really be in a
different world. Eventually, the warming in the north would
re-establish itself and come to dominate the cooling effects with a
vengeance.<br>
<br>
Via statistical analysis on the dynamics of system change, we have
various Early Warning System (EWS) indicators that give us some
clues as to how close we are to thresholds of various Earth system
tipping elements. Importantly, most systems exhibit a critical
slowing down as they lose resilience when we near threshold of
tipping; this is reflected in an increase in the autocorrelation
functions. I chat about the many tipping elements that are showing
these EWS signs in an alarming way.<br>
<a class="moz-txt-link-freetext" href="https://www.youtube.com/watch?v=Vi4bqZ_0TEM">https://www.youtube.com/watch?v=Vi4bqZ_0TEM</a>
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<i>[ This is some interesting but twisted info of what Texas is
telling teachers - start about 25 mins in ]</i><br>
<b>Getting Honest About the Human Predicament | 2024 Teacher
Workshop</b><br>
Texas Envirothon<br>
Feb 25, 2024 <br>
2024 Teacher Workshop<br>
Getting Honest About the Human Predicament<br>
Presented by Art Berman, Director and Geological Consultant,
Labyrinth Consulting Services<br>
<br>
Website <a class="moz-txt-link-freetext" href="https://www.uhcl.edu/texas-envirothon">https://www.uhcl.edu/texas-envirothon</a><br>
Facebook / texasenvirothon <br>
Instagram / texasenvirothon <br>
Twitter / texasenvirothon <br>
<br>
The mission of the Texas Envirothon is to develop knowledgeable,
skilled, and dedicated citizens who are willing and prepared to work
toward achieving a balance between the quality of life and the
quality of the environment.<br>
<a class="moz-txt-link-freetext" href="https://www.youtube.com/watch?v=RQm2wt7-kPU">https://www.youtube.com/watch?v=RQm2wt7-kPU</a><br>
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</p>
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<i>[ an excellent, deep discussion with a climate scientist ]</i><br>
<b>Accelerating” Debate on Global Warming: Interview with Dr. Zeke
Hausfather</b><br>
Climate Chat<br>
Streamed April 21, 2024<br>
In this Climate Chat episode, we interview Dr. Zeke Hausfather about
the recent acceleration in global temperatures and the debate in the
climate science community about the cause. We will also discuss the
risk of crossing 2ºC and how that compares to others risks that
society faces. We will also cover the need for carbon dioxide
removal (CDR) and sunlight reflection methods (SRM).<br>
<br>
Dr. Zeke Hausfather is the climate research lead at Stripe Climate
and a contributing author to the IPCC Sixth Assessment Report. He is
also a contributor to CarbonBrief and a climate scientist at
BerkeleyEarth. He spent 10 years working as a data scientist and
entrepreneur in the cleantech sector, where he was the lead data
scientist at Essess, the chief scientist at C3.ai, and the cofounder
and chief scientist of Efficiency 2.0. He also worked as a scientist
with The Breakthrough Institute and was the senior climate analyst
at Project Drawdown. He has masters degrees in environmental science
from Yale University and Vrije Universiteit Amsterdam and a PhD in
climate science from the University of California, Berkeley.<br>
<br>
Link to piece on acceleration and near-term projections: <br>
<a class="moz-txt-link-freetext" href="https://www.carbonbrief.org/factcheck-why-the-recent-acceleration-in-global-warming-is-what-scientists-expect/">https://www.carbonbrief.org/factcheck-why-the-recent-acceleration-in-global-warming-is-what-scientists-expect/</a><br>
<br>
For more Climate Chat episodes, see our YouTube home page: /
@climatechat <br>
<a class="moz-txt-link-freetext" href="https://youtu.be/LoegRrN-yvw?t=31">https://youtu.be/LoegRrN-yvw?t=31</a><br>
<br>
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<font face="Calibri"> <i>[The news archive - Pres Bill Clinton
warns ]</i><br>
<font size="+2"><i><b>April 22, 1992 </b></i></font> <br>
</font>
<p>April 22, 1992: In a speech at Drexel University in Philadelphia,
Democratic presidential candidate Bill Clinton lays out his
environmental vision. Early in the speech, he notes, "Our
addiction to fossil fuels is wrapping the earth in a deadly shroud
of greenhouse gases."<br>
<br>
<a class="moz-txt-link-freetext" href="http://c-spanvideo.org/program/ClintonCampaignSpeech7">http://c-spanvideo.org/program/ClintonCampaignSpeech7</a><br>
<br>
<a class="moz-txt-link-freetext" href="http://www.nytimes.com/1992/04/23/us/the-1992-campaign-environment-clinton-links-ecology-plans-with-jobs.html?pagewanted=print">http://www.nytimes.com/1992/04/23/us/the-1992-campaign-environment-clinton-links-ecology-plans-with-jobs.html?pagewanted=print</a><br>
<br>
<a class="moz-txt-link-freetext" href="http://articles.latimes.com/1992-04-23/news/mn-1311_1_environmental-record">http://articles.latimes.com/1992-04-23/news/mn-1311_1_environmental-record</a><br>
</p>
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