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$> Healthy Planet Action Coalition From: Peter D Ward <[email protected]> Sent: Friday, March 8, 2024 10:53 AM To: [email protected] Cc: Healthy Planet Action Coalition <[email protected]>; Planetary Restoration <[email protected]>; geoengineering <[email protected]>; Healthy Climate Alliance <[email protected]>; JOHN ENGLANDER <[email protected]> Subject: Re: Recording of Dr Peter D. Ward: Sea level change: How bad, how fast? HPAC Thu March 7 Thank you all for your attention and you patience in my many areas of ignorance especially about engineering. I learned a great deal and want to help going forward. I will write an Op Ed. I hope it is of quality that you will sign on. We need to do more. I need to do more On Thu, Mar 7, 2024 at 3:51 PM <[email protected] <mailto:[email protected]> > wrote: The recording of the HPAC conversation today with Dr Peter D. Ward on Sea Level Change is at <https://urldefense.com/v3/__https:/youtu.be/YjwacAjHsHU__;!!K-Hz7m0Vt54!ihya3AD_CskWDBSBfrq6HLeqc4K2ILw4_wz8KztjP-YzDms439SCUgEZCW-IvoaPF43G3t6LKV0$> https://youtu.be/YjwacAjHsHU 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 -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/00e201da713b%24561a1510%24024e3f30%24%40rtulip.net.
