Hi RobertT
This was one of the best sessions we've had. Thanks so much for setting
it up.
As regards your comments below, can you point me to where in the
recording either David or Peter said that there was significant
potential for albedo increase to mitigate the rate of inundation. When
I asked the direct question as to what, from an Earth Science
perspective, could be done to relieve SLR, my recollection is that
neither offered an answer. I came away with the strong impression that
they were saying that significant SLR is already baked in and there is
absolutely nothing, including SRM, that can be done in the short to
medium term to arrest it. This interpretation might just be a perfect
example of confirmation bias on my part, so I'd really like to get this
point clear.
Perhaps in response to this message, either Peter or David could
clarify. The question is, from an Earth Sciences perspective and
ignoring engineering, economic and political dimensions, what could now
be done to stop or reverse the SLR that is already in train?
Regards
Robert
On 08/03/2024 09:30, [email protected] wrote:
Dear Peter
Thank you very much for your superb presentation and discussion.
Our community of interest in HPAC supports the triad of direct climate
cooling, GHG removal and emission reduction.
One of the themes that arose in the discussion on your information on
the likelihood of severe impacts from sea level rise is that nothing
we can do about carbon can affect the risk of several metres of SLR
this century, destroying all low lying coastal infrastructure and
agriculture, but there is significant potential for albedo increase to
mitigate the rate of inundation. Increasing planetary reflectivity
would require concerted attention to the safety and feasibility of
various methods proposed, which unfortunately are the object of strong
disinformation campaigns.
This point about albedo potential has not been adequately appreciated
in policy discussions, especially regarding the security and misery
impacts.
Your slide 42 linked in my email below provides estimates of
effectiveness, timeliness, safety and affordability for main climate
interventions. I don’t think it is at all accurate as regards efforts
to deal with sea level rise, given the primary role of albedo in
mitigation potential.
Your suggestion to engage on advocacy is very welcome, for example
finding media willing to cover this important topic, sharing
well-crafted messages. One theme we are discussing is the need to
rebrighten the world, as discussed at rebrighten.org.
Best Regards
Robert Tulip
https://www.healthyplanetaction.org/
<https://urldefense.com/v3/__https:/www.healthyplanetaction.org/__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43Gs0Fbpqo$>
Healthy Planet Action Coalition
*From:*Peter D Ward <[email protected]>
*Sent:* Friday, March 8, 2024 10:53 AM
*To:* [email protected]
*Cc:* Healthy Planet Action Coalition
<[email protected]>; Planetary
Restoration <[email protected]>; geoengineering
<[email protected]>; Healthy Climate Alliance
<[email protected]>; JOHN ENGLANDER
<[email protected]>
*Subject:* Re: Recording of Dr Peter D. Ward: Sea level change: How
bad, how fast? HPAC Thu March 7
Thank you all for your attention and you patience in my many areas of
ignorance especially about engineering. I learned a great deal and
want to help going forward.
I will write an Op Ed. I hope it is of quality that you will sign
on. We need to do more. I need to do more
On Thu, Mar 7, 2024 at 3:51 PM <[email protected]> wrote:
The recording of the HPAC conversation today with Dr Peter D. Ward
on Sea Level Change is at https://youtu.be/YjwacAjHsHU
<https://urldefense.com/v3/__https:/youtu.be/YjwacAjHsHU__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43G3t6LKV0$>
This discussion covers vital information for Earth’s future.
Dr Ward’s slides are temporarily here.
<https://urldefense.com/v3/__https:/www.dropbox.com/scl/fi/ayswfmqofirbghgatanlk/Peter-Ward-Sea-Level-HPAC-March-2024.pptx?rlkey=7imh0owq4in4jchb0hd8kms5o&dl=0__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43GRO-Uq0s$>
Participant comments included input from sea level expert Dr John
Englander as well as dialogue on the potential of solar
geoengineering to mitigate sea level rise.
Dr Peter Ward
<https://urldefense.com/v3/__https:/en.wikipedia.org/wiki/Peter_Ward_(paleontologist)__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43GChNcX18$><https://urldefense.com/v3/__https:/en.wikipedia.org/wiki/Peter_Ward_(paleontologist)__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43GChNcX18$>is
Professor of Palaeontology at the University of Washington. He is
co-author of the influential book /Rare Earth: Why Complex Life is
Uncommon in the Universe
<https://urldefense.com/v3/__https:/en.wikipedia.org/wiki/Rare_Earth:_Why_Complex_Life_Is_Uncommon_in_the_Universe__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43GLorXOEk$>/,
and is a leading expert on the causes of mass extinctions (see his
TED talk
<https://urldefense.com/v3/__https:/www.youtube.com/watch?v=yzLCWrPhBLY__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43GPqZFaJY$>,
my
review
<https://urldefense.com/v3/__https:/drive.google.com/file/d/1mywEIgcA410W4bwi3sjEQK6B1kVCH-5Q/view__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43GhjAPg98$><https://urldefense.com/v3/__https:/drive.google.com/file/d/1mywEIgcA410W4bwi3sjEQK6B1kVCH-5Q/view__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43GhjAPg98$>of
/Under a Green Sky/).
Robert Tulip
https://www.healthyplanetaction.org/
<https://urldefense.com/v3/__https:/www.healthyplanetaction.org/__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43Gs0Fbpqo$>
Healthy Planet Action Coalition
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