Read this immediately

[Garrity, Dennis (ICRAF)]

Wow.

 

Here is the most clear-eyed and powerfully argued article fostering the HPAC perspective by respected academics that I have ever seen in the popular press:

 

Newsweek article and thread by Durwood Zaelke & Paul

Bledsoe: 

Now May Be the Time to Experiment With Mother Nature --Carefully Published Aug 27, 2024 at 5:27 AM EDT

 

https://www.linkedin.com/posts/durwood-zaelke-344a121_now-may-be-the-time-to-experiment-with-mother-activity-7234204928590712832-b8j1?utm_source=share&utm_medium=member_ios

We must immediately go into overdrive in circulating and building upon this critical development in any number of ways.

 

One of which may to invite Paul Bledsoe and Durwood Zaelke to join us as members of an HPAC advisory panel that could attract many other key academics to join our cause.

 

Paul is professorial lecturer at American University's Center for Environmental Policy. He served on the White House Climate Change Task Force under President Clinton.

 

Durwood is president of the Institute for Governance & Sustainable Development and adjunct professor at the University of California, Santa Barbara's Bren School of Environmental Science and Management.

 

Does anyone happen to know Paul or Durwood personally?

 

Onwards, Dennis

 

PS My deep thanks to Phoebe Barnard, who just shared the article with me.

[Garrity, Dennis (ICRAF)]

Geoengineering is worth the risk — provided we regulate it properly

 

By Pascal Lamy, Chair, Climate Overshoot Commission

Financial Times, Sept 2 2024

 

Read the full article at: https://on.ft.com/4dJJmOT

[Garrity, Dennis (ICRAF)]

Some members have been unable to read this article due to a paywall. The attached file contains a copy of the article. It is a powerful tool in our advocacy arsenal. Thanks.

 

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[Oswald Petersen]

Thanks Dennis. Great article. Somebody should inform Pascal Lamy that SRM it not the only alternative to ERA…

To view this discussion on the web visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/GV1P194MB2347B0D59CE93F28BCB5AD13A59F2%40GV1P194MB2347.EURP194.PROD.OUTLOOK.COM.

[Michael MacCracken]

Hi Dennis--Problem is he still lists supposed shortcomings that have been researched and generally dismissed, namely acid rain and ozone depletion. The termination shock issue would mainly result if emissions are not reduced while SRM is used to take temperatures down a good bit from where they are. And on changes in weather patterns, compared to what--the question is by how much or how little does the range of weather that would be induced compared to what has been experienced, much less to what we are headed for--this comparing of central values rather than the ranges of conditions is really a simplification that is likely quite misleading to real consideration of the issue.

So, the article is better, but in my view pretty far from a fully clear-eyed presentation of the issue to be considered.

Best, Mike

--

[H simmens]

Mike,

In addition to the concerns you express the article essentially introduces a couple of positions and conditions that are all but Poison Pills that negate the mostly otherwise positive statements in the article. 

Reflecting not surprisingly the position of the Overshoot Commission that he chairs he calls for a moratorium to be adopted by every country on large scale experimentation and deployment. 

This leaves an enormous opening for anti cooling activists to lobby governments all over the world to shut down DCC experimentation. 

Imagine how difficult if not impossible it would be to go back to the governments that enacted moratoria asking them to lift their moratoria at some unspecified date in the future. 

This moratorium language in my judgment would absolutely kill any organized efforts to advance DCC. 

Given what we know of the sharp differences of opinion amongst the Overshoot Commissioners I can only assume that the inclusion of the moratorium language was a necessary compromise to get those commission members on board who may not have even wanted to see anything positive said about DCC. 

In addition by labeling it as a ‘last resort’ rather than articulating that the safest and most effective portfolio of DCC needs to be developed and deployed he reinforces the almost universal perception that the world is nowhere near the point of having to face the need to deploy DCC. 

It is for these and other reasons why so many of us were so terribly disappointed by the report issued last fall by the Overshoot Commission. 

Herb

Herb Simmens
Author of A Climate Vocabulary of the Future

“A SciencePoem and an Inspiration.” Kim Stanley Robinson
@herbsimmens
HerbSimmens.com

On Sep 7, 2024, at 2:17 PM, 'Michael MacCracken' via HPAC Steering Circle <hpac-steer...@googlegroups.com> wrote:



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[Michael MacCracken]

Hi Herb--

Very much agreed.

Mike

On 9/7/24 2:47 PM, H simmens wrote:

 Mike,

[daleanne bourjaily]

Dear all,

If any of you want to contact Pascal Lamy about his error on termination shock or other points in his SRM article you can reach him through his personal assistent. Here is her contact information.

Sacha COURTIAL, Personal Assistant:
cour...@delorsinstitute.eu

Groet,

Dale Anne

Op do 5 sep 2024 13:33 schreef Garrity, Dennis (ICRAF) <D.GA...@cifor-icraf.org>:

--

[Karen Juster Hecht]

Thanks Dennis, indeed, this is a good short article. Here is the direct Newsweek link in case people have trouble getting it through LinkedIn.

Best,

Karen

www.climatewolf.org 

~~~~~
“the climate emergency is a race we are losing,
but it is a race we can win” ~~ A. Guterres, U.N. Sec Gen.

 

         La Casita Azul de Paz

--

[Garrity, Dennis (ICRAF)]

Please check your calendars to ensure that you’ll be with us for this special event.

 

From: healthy-planet-...@googlegroups.com healthy-planet-...@googlegroups.com on behalf of Garrity, Dennis (ICRAF) D.GA...@cifor-icraf.org
Date: Wednesday, September 25, 2024 at 12:47 PM
To: healthy-planet-action-coalition healthy-planet-...@googlegroups.com
Subject: [HPAC] Announcing a special HPAC event on climate cooling governance October 2nd at 5:30 PM EDT

Dear Colleagues,

 

The question of how to govern research and deployment of direct climate interventions is a crucial topic of great interest and debate these days.

 

We are very pleased to announce that we will be convening a special event on the topic on Wednesday, October 2^nd at 5:30 PM EDT /11:30 PM CET. (Please note that this is one day earlier, and in lieu of our regular biweekly meetings, which usually occur on Thursdays.)

 

The Zoom link for the meeting is:

 

https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

The panel discussion will feature two leading global experts on the subject:

Dr Ted Parson, Professor of Environmental Law and Faculty Director of the Emmett Institute on Climate Change and the Environment at the University of California, Los Angeles. He has led and served on multiple advisory committees for the National Academy of Sciences, the U.S. Global Change Research Program, and other national and international bodies. His work was influential in establishing the World Commission on Climate Overshoot, for which he serves as a senior advisor. He was formerly Joseph L. Sax Collegiate Professor of Law and Professor of Natural Resources and Environment at the University of Michigan, and spent twelve years on the faculty of Harvard’s Kennedy School of Government.

Mr Janos Pasztor was most recently Executive Director of the Carnegie Climate Governance Initiative (C2G). Before that he served as UN Assistant Secretary-General for Climate Change, and Senior Advisor to the UN Secretary-General. Earlier, he held various positions inter alia at the secretariat of the United Nations Framework Convention on Climate Change (UNFCCC), the UN Environment Programme (UNEP) and WWF International. He holds a B.Sc. and M.Sc. in Nuclear Engineering from the Massachusetts Institute of Technology (MIT).  

 

We will be asking the panel members during this 90-minute event to lay out their understanding of the governance landscape for direct climate interventions by addressing these questions, in the context of the climate triad of emissions reductions, greenhouse gas removals and sunlight reflection methods,

 

• What are the most crucial needs for good governance in this domain?
• What are the obstacles to making good governance happen?
• What are most plausible or feasible governance mechanisms?

  

Dr Ron Baiman, Coordinator of the Healthy Planet Steering Circle, will also be presenting the main points on cooling governance from the just-published paper on ‘Addressing the Urgent Need for Direct Climate Cooling: Rationale and Options’ in the journal Oxford Open Climate Change – a paper that was co-authored by many HPAC members.

 

This important event will help guide The Healthy Planet Action Coalition in determining how we can most effectively advance action on direct cooling interventions governance.

 

Do plan to join us for this conversation. There will be ample opportunity for viewers to participate in the discussion.

And please do feel free and encouraged to continue spreading the word about the event across your various networks.

 

With warm regards,

 

Dennis Garrity & Herb Simmens

 

 

[Garrity, Dennis (ICRAF)]

[rob...@rtulip.net]

Dear Friends

 

The temporary recording of the HPAC discussion on cooling governance with Janos Pasztor and Ted Parson is here (available for one week).

 

This will be edited and published on the HPAC website.

 

Thanks very much to Janos and Ted for joining us.

 

Regards

 

Robert Tulip

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[Garrity, Dennis (ICRAF)]

Dear Colleagues,

 

You are cordially invited to participate in our next HPAC members session on Thursday, February 20^th at 5.30 pm ET.

The Zoom link for the meeting is: https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

We will be discussing our new high-level diplomacy initiative to land a Belem Climate Accord among key heads of state to endorse

the HPAC mission goal to reduce temperature increases to below one-degree C, and to create a process for developing and

implementing a new global climate restoration plan.

 

Attached is a draft of what such an Accord would entail. It adheres to the format that was used for the Global Methane Pledge, a

similar type of accord that has now been endorsed by over 150 countries. It was championed by the United States and the European

Union and was launched at COP 26. It is now under full implementation with a secretariat in the State Department.

 

Such side agreements do not replace the UNFCCC. They are championed by committed countries and are endorsed by unique

coalitions of willing nations. They are considered to be additional commitments that go beyond the Convention and the Paris Agreement. 

  

We look forward to your engagement in this important discussion.

 

Onwards, Dennis

 

Dennis Garrity

Los Banos, Laguna, Philippines

Skype: Garrity.D

+63 969 049 3545

 

Coordinator, Steering Circle, Healthy Planet Action Coalition (HPAC) https://www.healthyplanetaction.org/

Board Chair, Global EverGreening Alliance www.evergreening.org

Champion, EverGreening the Earth Campaign

Distinguished Research Fellow, Center for International Forestry Research & World Agroforestry (CIFOR-ICRAF)

Former Director-General, World Agroforestry Centre

Former Drylands Ambassador, UN Convention to Combat Desertification

Former Board Member, Global Landcare

Former Senior Fellow, World Resources Institute

 

[Garrity, Dennis (ICRAF)]

[rob...@rtulip.net]

Dear HPAC

 

The recording including audio, video, chat and transcript of today’s HPAC meeting on a new climate accord will be here for one week.

 

Lucinda, please upload to HPAC website.

 

Regards

 

Robert Tulip

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[Garrity, Dennis]

Dear Colleagues,

 

You are cordially invited to participate in our next HPAC members session on Thursday, March 20^th at 5.30 pm ET.

The Zoom link for the meeting is: https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

It will feature a presentation by HPAC member Bruce Parker on his new model projecting future temperature increases

with cooling interventions, emissions reductions, and greenhouse gas removals.

 

Projecting the future global temperature is a very complex mathematical problem and is therefore usually left to global

circulation models. This makes it very difficult for most people to develop their own greenhouse gas emission scenarios

and to experiment with a range of assumptions about both emissions and other factors that affect the global temperature.

In addition, many of the assumptions made by these global models are very difficult to ascertain.

 

This session will demonstrate a new, simplified web-based interactive model that can provide a wide range of users with

the ability to develop their own emission scenarios, thereby giving them a quantitative understanding of the interactions among

various trajectories of emissions reductions, carbon removals, and sunlight reflection methods in producing desired global

temperature outcomes. The model:

 

1. uses formulas derived from global climate models to estimate changes in both atmospheric CO2 concentrations and

temperature,

(2) provides detailed descriptions of both the various inputs and calculations, and

(3) allows the user to specify values (at five-year intervals) for future emissions, reductions, albedo changes, etc.

 

The model results will allow for robust discussions regarding the scenarios (and their assumptions) that can be used to attain a variety of desired temperature outcomes.

  

We look forward to your engagement in this stimulating discussion.

[rob...@rtulip.net]

Note US Daylight Saving has started.  5.30 pm Thursday EDT = 9.30 pm UK = 8.30 am Friday Australia AEDT

 

From: healthy-planet-...@googlegroups.com <healthy-planet-...@googlegroups.com> On Behalf Of Garrity, Dennis

Sent: Monday, 17 March 2025 12:24 PM
To: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>

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[Garrity, Dennis]

[Garrity, Dennis]

Dear Colleagues,

 

One outcome of the very interesting HPAC session last week was that Bruce has proposed to launch a working group to continue discussions

on how to further improve his model to enable individuals to experiment with how the triad of solutions can generate favorable future temperatures.

 

Bruce and I have been in touch about this, and we’d like to propose that the first meeting of the group be convened on April 1st at 5.30 pm EDT

/ 9.30 pm UK / 5.30 am Manila / 8.30 am Australia.

 

All are cordially invited to participate.

 

Please kindly inform Bruce and I by a return email to us your interest in joining the discussions. Send your replies to Bruce with a cc to me. There’s no

need to Reply All to the entire membership.

 

We will send out a calendar invite and email announcement to all those that reply in the affirmative.

 

With thanks and warm regards,

 

Dennis

 

From: Garrity, Dennis <D.GA...@cifor-icraf.org>

Date: Monday, March 17, 2025 at 9:23 AM
To: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>

[John Dixon]

On April Fool’s Day??!!

Fingers crossed

 

From: healthy-planet-...@googlegroups.com <healthy-planet-...@googlegroups.com> On Behalf Of Garrity, Dennis

Sent: Friday, 28 March 2025 2:41 PM
To: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>; hpac-steer...@googlegroups.com

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[Garrity, Dennis]

Dear Colleagues,

 

You are cordially invited to our next HPAC members session on Thursday, May 15^th at 5.30 pm EDT.

The Zoom link for the meeting is: https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

It will feature a broadcast by the HPAC team attending The Degrees Global Forum on SRM in Cape Town. The Forum is from 12-16 May.

 

We have somewhere around ten HPAC members here. And for those that can participate in the broadcast we’ll be updating you on the

key developments in the SRM field. And there have already been some very interesting ones.

[John Dixon]

Hi Dennis

 

Thanks for the invite

 

Hope the Degrees Global Forum is informative and inspiring – and that we can recruit new members for HPAC.

 

Impressive attendance from HPAC

 

Best

John

 

From: hpac-steer...@googlegroups.com <hpac-steer...@googlegroups.com> On Behalf Of Garrity, Dennis

Sent: Tuesday, 13 May 2025 5:27 PM
To: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>
Cc: hpac-steer...@googlegroups.com

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[Garrity, Dennis]

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[Robert Chris]

Are we meeting now?  I'm getting no response from the link?

Regards

Robert

---

From: healthy-planet-...@googlegroups.com on behalf of Garrity, Dennis
Sent: Thursday, May 15, 2025 05:49
To: healthy-planet-action-coalition
Cc: hpac-steer...@googlegroups.com
Subject: [HPAC] Reminder: Our next HPAC session -- a broadcqst from the Cape Town Degrees Global Forum on SRM -- Thurs May 15th at 5.30 pm EDT

To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/GV1P194MB2347ACD95DA3F21C86211E1CA590A%40GV1P194MB2347.EURP194.PROD.OUTLOOK.COM.

[Garrity, Dennis]

Waiting for Robert Tulip to open up for us.

Sent from my iPhone

On May 15, 2025, at 11:35 PM, Robert Chris <robert...@gmail.com> wrote:



[Gregory Slater]

Likewise, so far (5:37 EDT) Just:

"Waiting for host to start the meeting."

Greg Slater

[Rebecca personal em]

Hi Robert C,

I’ve just sent a txt to Robert T in case he’s hosting.  

Rebecca 

On 16 May 2025, at 7:35 am, Robert Chris <robert...@gmail.com> wrote:



To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/VI1P194MB0398C87802730E18FA607238FC90A%40VI1P194MB0398.EURP194.PROD.OUTLOOK.COM.

[Garrity, Dennis]

Thanks, Rebs.

Sent from my iPhone

On May 15, 2025, at 11:38 PM, Rebecca personal em <rebe...@gmail.com> wrote:



[Gregory Slater]

I can host if you want....

To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/989CC503-FFCC-4B24-8722-FE8E251C1106%40gmail.com.

[Rebecca Bishop]

Thanks Greg, 

Please send a link.  

Rebecca

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[Paul Beckwith]

Does anybody know it the HPAC meeting will occur? It was supposed to start 15 minutes ago?  Thanks....

To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/GV1P194MB2347ACD95DA3F21C86211E1CA590A%40GV1P194MB2347.EURP194.PROD.OUTLOOK.COM.

[Ron Baiman]

Hi Dennis et al<

Iwill open my Zoom personal room link: Ron Baiman is inviting you to a scheduled Zoom meeting.

Topic: Ron Baiman's Personal Meeting Room
Join Zoom Meeting
https://benu.zoom.us/j/8360381169?pwd=L2Zya2JCNE9IWWdCc3NDWnhrU28rdz09

Meeting ID: 836 038 1169
Passcode: 294749

---

One tap mobile
+13126266799,,8360381169#,,,,*294749# US (Chicago)
+16465588656,,8360381169#,,,,*294749# US (New York)

---

Dial by your location
• +1 312 626 6799 US (Chicago)
• +1 646 558 8656 US (New York)
• +1 646 931 3860 US
• +1 301 715 8592 US (Washington DC)
• +1 305 224 1968 US
• +1 309 205 3325 US
• +1 360 209 5623 US
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• +1 669 900 9128 US (San Jose)
• +1 689 278 1000 US
• +1 719 359 4580 US
• +1 253 205 0468 US
• +1 253 215 8782 US (Tacoma)
• +1 346 248 7799 US (Houston)

Meeting ID: 836 038 1169
Passcode: 294749

Find your local number: https://benu.zoom.us/u/keIgxjtfd5

To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/07C4741E-EC2D-4341-B397-C467CF62EBBF%40gmail.com.

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Healthy Planet Action Coalition

YouTube Channel

@HPACoalition  (Bluesky and Twitter/X)

 Addressing the Urgent Need for Direct Climate Cooling: Rationale and Options

Baiman et al. 2024. Oxford Open Climate Change

An Open Letter to the IMO Supporting Maritime Transport that Cools the Atmosphere While Preserving Air Quality Benefits. Baiman et al. 2024. Oxford Open Climate Change

[Gregory Slater]

As a contingency, I've scheduled a meeting to start now

https://us02web.zoom.us/j/81414560457?pwd=OJAgd21YFEdOP0Rv5kli2mqiqXfTEZ.1

Meeting ID: 814 1456 0457
Passcode: 067624

Just say the word... so far just waiting for 'host to start on Dennis' link

Greg Slater

[Ron Baiman]

Thanks Greg!  I think meeting is starting in my Zoom personal room!

To view this discussion visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/595E1BC6-8BC6-4156-A2B7-687D76172E55%40gmail.com.

[Ron Baiman]

Dear Colleagues,

We are meeting at the link copied below!

Best,

Ron

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YouTube Channel

@HPACoalition  (Bluesky and Twitter/X)

 Addressing the Urgent Need for Direct Climate Cooling: Rationale and Options

[Garrity, Dennis]

Dear HPAC colleagues,

 

You are cordially invited to participate in our next HPAC session on Thursday, May 29th, at 5:30 PM Eastern time.

The Zoom link for the meeting is: https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

We will be sharing the reflections of a number of HPAC members who participated in the Degrees Global Forum on SRM in

Cape Town during the week of May 12-16.

 

This discussion will be a continuation of the conversation that we broadcast from Cape Town during the previous HPAC

meeting on May 15.

 

There were many productive sessions during the conference, and excellent networking opportunities to meet and converse

with many of the more than 300 conference participants. There were ample opportunities for the HPAC members attending

to draw insights on how the field is advancing, and what it means for the achievement of our organization’s crucial mission.

 

We look forward to having you with us at the May 29th session.

 

With warm regards,

 

Dennis Garrity

HPAC Steering Circle Coordinator

 

From: Garrity, Dennis <D.GA...@cifor-icraf.org>

Date: Tuesday, May 13, 2025 at 3:26 PM
To: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>

[Garrity, Dennis]

Reminder to pencil in to your calendar our upcoming HPAC session.

 

In addition to our main topic of the outcomes of the Degrees Global Forum on SRM

we will also be hosting Dr Jules Pretty to present plans to convene an HPAC Story-Telling

Master Class on July 10 and 24^th.

 

Cheers, Dennis

 

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[rob...@rtulip.net]

Dear all

 

This temporary link contains the video, audio and chat from the HPAC discussion of the Degrees Conference, for upload to HPAC website.

 

Regards

 

Robert Tulip

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[Garrity, Dennis]

Dear colleagues,

 

Healthy Planet Action Coalition is convening a Masterclass in Story-Telling for HPAC members and

associated individuals to improve how we engage different target audiences when advocating climate action.

 

The course will be offered during two 1.5 hour Online sessions held on July 10 and July 24, 2025, both

are during our regularly-scheduled member meetings. The course is being led by Professor Jules Pretty,

an author and scientist, HPAC member and Emeritus Professor of Environment and Society at the

University of Essex. www.julespretty.com   For more information, see the attached document.

 

This is great way to make use of our member meetings in July and to build our skills on how to effectively

communicate our mission through good story-telling.  We hope to see you there.  Please confirm your

participation via an email to Dennis Garrity (d.ga...@cifor-icraf.org) with the title “Confirming

Participation in Masterclass”.

 

Please feel free to also invite your colleagues and friends to participate.

 

The Zoom link for the Master Class is our usual one: https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

With best regards,

 

Dennis Garrity

Steering Circle Coordinator

Healthy Planet Action Coalition

 

[Garrity, Dennis]

Dear colleagues,

 

Healthy Planet Action Coalition is convening a Masterclass in Story-Telling for HPAC members and

associated individuals to improve how we engage different target audiences when advocating climate action.

 

The course will be offered during two 1.5 hour Online sessions held on July 10 and July 24, 2025, both

are during our regularly-scheduled member meetings at 5.30 pm EDT. The course is being led by

[Garrity, Dennis]

Here is a brief and inspiring piece on ‘What makes a good story?’

It’s well worth reading, whether or not you’ll be able to attend the Master Class.

[rob...@rtulip.net]

Here is the temporary recording of the HPAC meeting with Jules Pretty, with video, audio, chat and transcript.

 

Regards

 

Robert Tulip

 

From: healthy-planet-...@googlegroups.com <healthy-planet-...@googlegroups.com> On Behalf Of Garrity, Dennis

Sent: Tuesday, 8 July 2025 10:20 AM
Cc: Jules Pretty <jpr...@essex.ac.uk>

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[Garrity, Dennis]

Dear Colleagues,

 

The feedback from participants who attended the 1^st session of the Master Class on Story-Telling that

was convened on July 10^th was overwhelmingly positive. Deeply insightful. Practical. Applicable tools.

 

This was very encouraging, and a tribute to the brilliant ability of our master class guide, Jules Pretty.

 

The 2^nd and final session of the Master Class is scheduled for Thursday, July 24^th at 5.30 pm EDT. We look

forward to seeing everyone there once again to complete the short course on story-telling.

 

The Zoom link for the Master Class is our usual one for Healthy Planet Action Coalition sessions:

https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

With best regards,

 

Dennis Garrity

Steering Group Coordinator

Healthy Planet Action Coalition

[rob...@rtulip.net]

Here is the recording for upload to the HPAC site.  This temporary link includes video, audio, transcript and chat.

 

https://www.dropbox.com/scl/fo/17sxn5xmfr47o6g7tlk7a/AEoySR_LrVpWTRyVR9AX65s?rlkey=cuqw5ip6zvzpyickgmbovg9mm&st=czdkj1ch&dl=0

 

Here is my story written during the meeting.

 

Albedo Accord Story

 

I have proposed in an article published in The Hill that focus of climate policy should pivot to the agreement of an Albedo Accord designed to restore lost reflection of sunlight from the Earth.  Such an Accord, modelled on the Montreal Protocol to protect the ozone layer, would restore the rapidly collapsing Albedo Layer formed by clouds, ice, snow and aerosols in order to cool the planet, buying crucial time to solve the far more difficult problem of removing excess greenhouse gases.  Getting published in The Hill fortunately helps to bring this proposal to a wider audience.

 

Unfortunately, the level of political understanding required to support this proposal is extremely sparse.  The climate action movement is dominated by mythological thinking, with false beliefs about the feasibility of cutting emissions as a primary climate strategy.  Meanwhile, conservative thought is dominated by climate denial.  As a result, the dominant polarising views on both sides refuse to engage on practical cooperative pathways to cool the Earth.

 

Fortunately, HPAC provides a forum where these issues can be discussed in a patient and courteous way.  This serves to clarify how advocacy can be made more effective.  For example, the recognition that emission reduction is impractical in the short term does not constitute support for ongoing emissions.  Rather, the aim is to define political strategy and tactics that could actually shift the world from its current destructive trajectory. 

 

Unfortunately, HPAC is an isolated voice in the wilderness.  The Triad program is only understood by very small numbers of people, and public opposition remains very strong.

 

Fortunately, it should be possible to find commercial allies who could support an Albedo Accord. My assessment is that this requires a tactical separation from carbon action, in order to mobilise industries such as insurance, shipping, tourism, agriculture and energy who could to lobby governments for this strategic policy pivot to focus on action to rebrighten the planet.

 

Regards

 

Robert Tulip

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[Garrity, Dennis]

 

Dear colleagues,

 

Our next biweekly session of the Healthy Planet Action Coalition is on Thursday, August 7^th at 5.30 pm EDT.

The Zoom link is our usual one: https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

The format will be an open discussion of key developments related to our mission.

 

Members are invited to introduce topics of interest. Some examples are:

 

• Reflections on the recent Arctic Repair and Tipping Point conferences
• Reflections on The Master Class on Story-Telling
• Discussion of the upcoming HPAC global online conference on the global heating emergency and preventing 2 degrees

Please feel free to also invite your colleagues and friends to participate.

  

With best regards,

[Garrity, Dennis]

[rob...@rtulip.net]

Here is the temporary recording of today’s HPAC meeting, with video, audio, transcript and chat, for upload to HPAC website.

 

https://www.dropbox.com/scl/fo/tq5633uegrug3kygk5iyo/ANII4ATOtm1c3hSkMv467CM?rlkey=8eb975m28g1lpev0xsxt1v30k&st=grf8npry&dl=0

 

Regards

 

Robert Tulip

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[Garrity, Dennis]

Dear colleagues,

 

Our next biweekly session of the Healthy Planet Action Coalition is on Thursday, August 21^st at 5.30 pm Eastern Daylight Time (US).

The Zoom link is our usual one: https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09

 

We will be joined by Brian Soden, a former student of Tom Goreau, who will share his reflections on his recent research paper on a potentially more efficient alternative to stratospheric aerosol injection with SO2 or other reflective aerosols.

 

This method deploys absorptive aerosols like black carbon in the upper stratosphere. Climate models indicate that this new approach can reduce global temperatures an order of magnitude more efficiently per unit aerosol mass than conventional scattering-based interventions. 

 

The abstract of the paper and a link to the full paper is below.

 

Please feel free to also invite your colleagues and friends to participate.

  

With best regards,

 

Dennis Garrity

Steering Circle Coordinator

Healthy Planet Action Coalition

 

Stratospheric aerosol injection can weaken the carbon dioxide greenhouse effect

https://www.nature.com/articles/s43247-025-02466-z

• Haozhe He, 
• Brian J. Soden, 
• Gabriel A. Vecchi & 
• Wenchang Yang 

Communications Earth & Environment volume 6, Article number: 485 (2025) 

 

Abstract

 

Stratospheric aerosol injection is a proposed method for offsetting greenhouse gas-induced warming by introducing scattering aerosols into the lower stratosphere to reflect sunlight. Here we explore a potentially more efficient alternative: weakening the Earth’s greenhouse effect by deploying absorptive aerosols in the upper stratosphere (~10 hPa). These aerosols warm the carbon dioxide emission level—where outgoing longwave radiation is most sensitive to temperature—thereby enhancing top-of-atmosphere infrared emission without altering atmospheric carbon dioxide concentrations. Idealized climate model simulations indicate that this approach can reduce global temperatures an order of magnitude more efficiently per unit aerosol mass than conventional scattering-based interventions. Although based on simplified model experiments lacking interactive aerosol processes and operational constraints, our results identify a distinct physical mechanism for climate intervention, arguing for further research into the impacts—especially potential unintended side effects—of injecting absorptive aerosols into the upper stratosphere as an alternative solar radiation management strategy.

 

 

[Garrity, Dennis]

All,

 

Here is a link to the paper that Brian referred to during his remarks today about aerosols having no net global effect on

recent trends in Earths energy budget. 

 

https://www.researchsquare.com/article/rs-5679586/v1

 

Negligible Contribution from Aerosols to Recent Trends in Earth’s Energy Imbalance - Research Square Abstract During the 21st century, Earth’s energy imbalance (EEI) at the top of the atmosphere has markedly increased, mainly due to an increase in absorbed shortwave (SW) rather than a decrease in outgoing longwave (LW) radiation. While previous studies, based on single-forcing (aerosol-only) experiments, linked reductions in anthropogenic aerosols to this positive SW trend, we find that ... www.researchsquare.com

 

 

From: Garrity, Dennis <D.GA...@cifor-icraf.org>

Date: Monday, August 18, 2025 at 8:29 AM
To: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>

[Tom Goreau]

Thanks for this paper, Brian!

 

This paper is extremely important, the first comprehensive global analysis of changes in aerosols and sulfate that I’ve seen, revealing unexpected differences between hemispheres, with increased southern sources compensating for reduced northern ones.

 

My suggestion is that Dan Miller invite Brian Soden to discuss this on his climate show as a follow through to his recent Jim Hansen interview.

 

This paper is very relevant to Robert Tulip’s efforts to seek an accord to directly reduce albedo forcing of climate change rather than (or as well as) emissions forcing.

 

The question is how best that can be accomplished. Brian Soden’s talk last night showed that a lot more modeling is needed into possible solutions, but that none seem to be ready to play very soon no matter how climate change accelerates. Surprises inevitably lie ahead!

 

Figure 2 of this paper shows that increased sulfate levels are found around the latitude of Australia, consistent with biomass burning, but aerosols keep increasing all the way south to Antarctica! This would seem to be the result of increased currents and waves in the circum-Antarctic circulation generating aerosols, but with a reduced role for biological sources of sulfate in the Antarctic waters from phytoplankton DMS oxidation?

 

It is worth noting that large changes in soil water storage in Australia during ENSO wet/dry cycles are a major influence on global changes in ocean sea level, they accounted for global sea level actually falling slightly during strong La Niñas!

 

https://agupubs.onlinelibrary.wiley.com/doi/pdfdirect/10.1029/2012GL053055

 

https://os.copernicus.org/articles/12/1165/2016/os-12-1165-2016.pdf

 

Best wishes,

Tom

Thomas J. F. Goreau, PhD
President, Global Coral Reef Alliance

Chief Scientist, Biorock Technology Inc., Blue Regeneration SL

Technical Advisor, Blue Guardians Programme, SIDS DOCK

37 Pleasant Street, Cambridge, MA 02139

gor...@globalcoral.org
www.globalcoral.org
Phone: (1) 857-523-0807 (leave message)

 

Books:

Geotherapy: Innovative Methods of Soil Fertility Restoration, Carbon Sequestration, and Reversing CO2 Increase

https://www.routledge.com/Geotherapy-Innovative-Methods-of-Soil-Fertility-Restoration-Carbon-Sequestration-and-Reversing-CO2-Increase/Goreau-Larson-Campe/p/book/9781466595392

 

Innovative Methods of Marine Ecosystem Restoration

https://www.taylorfrancis.com/books/oa-edit/10.1201/b14314/innovative-methods-marine-ecosystem-restoration-robert-kent-trench-thomas-goreau

 

On the Nature of Things: The Scientific Photography of Fritz Goro

 

Geotherapy: Regenerating ecosystem services to reverse climate change

 

No one can change the past, everybody can change the future

 

It’s much later than we think, especially if we don’t think

 

Those with their heads in the sand will see the light when global warming and sea level rise wash the beach away

 

“When you run to the rocks, the rocks will be melting, when you run to the sea, the sea will be boiling”, Peter Tosh, Jamaica’s greatest song writer

 

“The Earth is not dying, she is being killed” U. Utah Phillips

 

“It is the responsibility of intellectuals to speak the truth and expose lies” Noam Chomsky

 

 

 

From: healthy-planet-...@googlegroups.com <healthy-planet-...@googlegroups.com> on behalf of Garrity, Dennis <D.GA...@cifor-icraf.org>
Date: Thursday, August 21, 2025 at 11:54 

PM

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[rob...@rtulip.net]

The temporary recording of the video, audio, transcript and chat of the meeting with Professor Soden on stratospheric black carbon are here for download.

 

https://www.dropbox.com/scl/fo/bz283k4ef74englhzmhpo/AH4zQ-aBsE13heGeUYLy0vM?rlkey=jo5a0x78bk612of5unhodelpm&st=2n6eoz6s&dl=0

 

The edited video will be uploaded to the HPAC website.

 

Our meeting this Thursday  4 September will be with Sev Clarke on nanobubbles, notice to follow.

 

Regards

 

Robert Tulip

 

From: healthy-planet-...@googlegroups.com <healthy-planet-...@googlegroups.com> On Behalf Of Garrity, Dennis

Sent: Monday, 18 August 2025 10:30 AM
To: healthy-planet-action-coalition <healthy-planet-...@googlegroups.com>

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[Ron Baiman]

Thanks Robert. I have downloaded the video of Bran's presentation to the HPAV google drive and forwarded it to Lucinda for editing so that I can upload it to the HPAC website and Youtube channels. 

@Brian - Thank you for an interesting and provocative talk!  As you seemed to agree with the notion that black carbon SAI was probably not a good idea, I thought it would be interesting to try to draw you out on your earlier climate policy comments related to the wisdom (or not) of early piloting of (conventional) SAI.  This in my mind was related to your thinking on the cooling or plateau-warming  impact of "net-zero" emissions that I think is quite central (at least in popular discourse) to the (in my view terribly misguided) promotion of an "emissions reduction and drawdown only" climate policy approach. 

Best,

Ron

 

Best,

Ron

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[Tom Goreau]

Thanks Ron, Robert (with further apologies), and Dennis,

 

Could you please pass the link on to me once posted so I can add it to the teaser:

 

https://www.globalcoral.org/geoengineering-a-bad-idea-whose-time-has-come/

 

Best wishes,

Tom

[Ron Baiman]

Will do, Tom!