[geo] Brighten the Planet! Invitation to next meeting of the Healthy Planet Action Coalition, Thursday 9 March 4:30 PM EST.

[H simmens]

HPAC has published short papers on planetary brightening by Robert Chris and 
Robert Tulip.  

Robert C and Robert T will discuss their papers and issues arising at the HPAC 
meeting, followed by discussion with meeting participants.
 
Meeting link: 
https://us02web.zoom.us/j/88954851189?pwd=WVZoeTBnN3kyZFoyLzYxZ1JNbDFPUT09
 
Meeting Time: Thursday 9 March 1.30pm Pacific = 9.30pm Thursday UK = 8.30 am 
Friday 10 March Australia AEDT
 
Article links from https://www.healthyplanetaction.org/hpac-participants-work

Brighten up! The Case for Cooling 

 by Robert Chris (6 pages)

Moral Perspectives on Climate Policy 
 by Robert 
Tulip (4 pages)

 

Herb Simmens
Author of A Climate Vocabulary of the Future
@herbsimmens
HerbSimmens.com




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[geo] WEEKLY SUMMARY (27 FEBRUARY - 5 MARCH 2023)

[Geoengineering News]

*WEEKLY SUMMARY (27 FEBRUARY - 5 MARCH 2023)*


*CONTENTS OF SUMMARY*

1)  Deadlines

2)  Upcoming Events

3)  Scientific Papers

4)  Reports

5)  Research Projects

6)  Discussions

7)  Posts

8)  Podcasts

9)YouTube Videos



*DEADLINES*

Call for abstract submission: “Development and application of climate
emulators” | 10 March 2023

https://talentgarden.org/en/


Call for Abstract Submission & Financial Support (World Climate Research
Programme) | 14 March 2023

https://wcrp-osc2023.org/call-abstract



*UPCOMING EVENTS*

*Here is the link to the Google calendar including events on the
geoengineering topic: *

https://calendar.google.com/calendar/u/0

cid=MzhjNGQ1OGQzMjIwZDkyYTBjZGE2YjEwMDMzODNkZTI1MTNjYjQzZTdkMTdhMjU0ODk0MDU1NTgzYTlkNTFmNkBncm91cC5jYWxlbmRhci5nb29nbGUuY29t



(NEW) *What if Someone Tries to Re-Engineer the Climate? By SXSW | *13
March 2023

https://schedule.sxsw.com/2023/events/PP127337


(NEW)* Solar Climate Intervention Virtual Symposia (**Symposium #2) | *17
March 2023

https://sites.google.com/view/solargeo-symposium/home


*The 21st International Conference on Nucleation & Atmospheric Aerosols
by QUT School of Earth and Atmospheric Sciences and Centre for the
Environment |* 26-30 June 2023

https://www.icnaa2023.com.au/


*The Geoengineering Model Intercomparison Project (GeoMIP)
 2023 meeting* | 3-7 July 2023

https://sites.google.com/view/geomip-2023/home?pli=1


*Climate Engineering (GRS) |* 17-18 February 2024

https://www.grc.org/climate-engineering-grs-conference/2024/


*GRC Climate Engineering 2024 |* February 18-23, 2024
https://www.grc.org/climate-engineering-conference/2024/



*SCIENTIFIC PAPERS*

Conspiracy spillovers and geoengineering

https://www.cell.com/iscience/fulltext/S2589-0042(23)00243-2


Trends in stratospheric contraction under sulfate aerosol injection

https://meetingorganizer.copernicus.org/EGU23/EGU23-9505.html


Soviet and Russian perspectives on geoengineering and climate management

https://wires.onlinelibrary.wiley.com/doi/full/10.1002/wcc.829


How will Solar Radiation Modification affect Cropland Suitability in West
Africa?

https://meetingorganizer.copernicus.org/EGU23/EGU23-703.html


Comment on “An approach to sulfate geoengineering with surface emissions of
carbonyl sulfide” by Quaglia et al. (2022) (Preprint)

https://egusphere.copernicus.org/preprints/2023/egusphere-2023-268/


World in the making: On the global visual politics of climate engineering

https://www.cambridge.org/core/journals/review-of-international-studies/article/world-in-the-making-on-the-global-visual-politics-of-climate-engineering/276476FAE0FA1C5993251C36216A01D2


SATAN pre print

https://groups.google.com/g/geoengineering/c/Qsm-8cAM5R8


Utilizing AI emulators to Model Stratospheric Aerosol Injections and their
Effect on Climate

https://meetingorganizer.copernicus.org/EGU23/EGU23-8496.html


Towards a better understanding of the physical risks and tradeoffs of solar
geoengineering

https://meetingorganizer.copernicus.org/EGU23/EGU23-12811.html



*REPORTS*

Report of the Americas Conference on Solar Radiation Modification: Science,
Governance and Implications for the Region’.

https://www.iai.int/en/post/detail/Americas-Conference-on-Solar-Radiation-Modification


One Atmosphere: An Independent Expert Review on Solar Radiation
Modification Research and Deployment

https://wedocs.unep.org/handle/20.500.11822/41903



*RESEARCH PROJECTS*

Refreeze the Arctic Foundation funds marine cloud brightening research

https://www.cam.ac.uk/news/refreeze-the-arctic-foundation-funds-marine-cloud-brightening-research



*DISCUSSIONS*

SATAN

https://groups.google.com/g/geoengineering/c/sRS7_YyiUb8


Make Sunsets stimulates more debate over "Geoengineering"- PT Barnum
further vindicated!

https://groups.google.com/g/geoengineering/c/d5uFbr8HgPc


Stratospheric Aerosols in FAIR model

https://groups.google.com/g/geoengineering/c/eTsiWGXZzvk


Impacts of nanoparticle sodium chloride particles at high altitude

https://groups.google.com/g/geoengineering/c/zOyJioW2Os8


Michael Mann - SIRIUS - geoengineering

https://groups.google.com/g/geoengineering/c/-9oLSL4e2lw



*POSTS*

Researchers launched a solar geoengineering test flight in the UK last fall

https://www.technologyreview.com/2023/03/01/1069283/researchers-launched-a-solar-geoengineering-test-flight-in-the-uk-last-fall/


Could imitating volcanos fix the climate crisis? Science is spilt (The
controversial theory of solar geoengineering is at the centre of a growing
body of climate research in Asia and elsewhere.)

[geo] Moderator / owner role

[Andrew Lockley]

Hi,

I've moderated this list since its inception, and now I'm also the list
"owner". Others have historically joined this moderator role, but aren't
presently active.

Being a moderator does not give any special posting privileges or posting
responsibilities. Contribution of stories to the list is separate, but many
people think the two are linked ("please post this to the list" is a
frequent request in my email).

Moderation involves the following tasks.
1) removing members from moderation, so they can post instantly. This is
presently done effectively by default for academics, and done typically for
members of the public
2) approving individual posts for anyone who's moderated. This is done by
default, as long as the content is relevant and non-trivial.
3) very occasionally reversing (1) for poor behaviour, and in extremis
issuing permanent bans (only 1 or 2 bans for humans in the entire history
of the group - eg for harvesting emails and spamming).

As you can see from recent pointed personal criticism of my research on
this list, I'm making no effort to misuse my moderator privileges to steer
debate in my personal favour. I've actually been arguably more tolerant of
ad hominem attacks on myself than I would be on others - having issued
exactly zero warnings for recent posts. I hope list members value the
service and trust its independence from my views and research.

However, some people may seek a change to the status quo - for whatever
reason. I'm happy to add more moderators, and potential also relinquish my
day-to-day engagement in moderation, if that was felt desirable. I'm
neither the world's best moderator nor the world's most respected
geoengineering expert. A new moderator could be a researcher, or an
independent administrator (eg Ayesha, who is paid to post new material to
the list).

I would also be amenable to discussing a change of list owner - essentially
permanently removing me from any oversight of the group. This would be a
big step, and could well have irreversible and very negative consequences,
eg someone shutting down the list in a Trojan Horse attack.

Feedback and volunteering offers are welcome.

Andrew Lockley

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[geo] Re: The Radiative and Cloud Responses to Sea Salt Aerosol Engineering in GFDL Models

[Geoengineering News]

Poster's note: Reviewer 2 did a podcast on the paper: "*The Radiative and
Cloud Responses to Sea Salt Aerosol Engineering in GFDL Models."*
Title of podcast: Does MCB actually work? MahfouzReviewer 2 does
geoengineering


*Some links to listen to the podcast: *

https://podcasts.apple.com/us/podcast/does-mcb-actually-work-mahfouz/id1529459393?i=1000602560752

https://podcasts.google.com/feed/aHR0cHM6Ly9hbmNob3IuZm0vcy8zMjkzZDIzMC9wb2RjYXN0L3Jzcw/episode/OTgzZWVlN2ItMjFjNC00NmNkLTg3ZTUtNTRiYzQyMzY5YTMy?ep=14Naser


https://open.spotify.com/show/2KSB1lU18qh5gYIRDYPJMb

*Description: *

"Mahfouz explains some big problems with MCB to @geoengineering1. Can we
fill in the knowledge gaps, before it's too late to use MCB? Paper: "The
Radiative and Cloud Responses to Sea Salt Aerosol Engineering in GFDL
Models" (
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022GL102340)"

On Fri, Feb 24, 2023, 1:46 PM Geoengineering News <
geoengineeringne...@gmail.com> wrote:

> https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022GL102340
>
> *Authors*
>
> Naser G. A. Mahfouz
> 
> , Spencer A. Hill
> 
> , Huan Guo
> 
> , Yi Ming
> 
> First published: *17 January 2023*
>
> https://doi.org/10.1029/2022GL102340
>
> Abstract
>
> Marine cloud brightening is a proposal to counteract global warming by
> increasing sea salt aerosol emissions. In theory, this increases the cloud
> droplet number concentration of subtropical marine stratocumulus decks,
> increasing cloud brightness and longevity. However, this theoretical
> progression remains uncertain in coupled climate models, especially the
> response of liquid water path and cloud fraction to aerosol seeding. We use
> the GFDL CM4 climate model to simulate marine cloud brightening following
> the published G4sea-salt protocol, in which sea salt aerosol emissions are
> uniformly increased over 30 S–30 N in addition to standard forcings from a
> SSP2-4.5 future warming scenario. The perturbed radiative and cloud
> responses are temporally stable though spatially heterogeneous, and direct
> scattering by the added sea salt predominates over changes to cloud
> reflectance. In fact, feedbacks in the coupled simulation lead to a net
> warming, rather than cooling, response by clouds.
> Key Points
>
>
>-
>
>Temporally stable climate response to increased sea salt aerosol in
>GFDL’s AM4 and CM4 models following the G4sea-salt protocol
>-
>
>Dominant role of direct aerosol effects in both models as the indirect
>aerosol–cloud effects are counterbalanced by cloud feedbacks in CM4
>-
>
>Uncertain spatial radiative and cloud responses necessitating further
>constraining to yield detailed mechanistic understanding
>
> Plain Language Summary
>
> With calls for climate action rising, some countries and groups may be
> looking at counteracting global warming. As reducing emissions of
> greenhouse gases remains elusive, and while the results of climate change
> manifest in extreme events and weather records, state or private actors may
> look for active engineering solutions which remain hypothetical and not
> fully scientifically understood. Using premier climate models at NOAA GFDL,
> we examine one form of climate engineering, marine cloud brightening, aimed
> at increasing radiation reflected back to space by increasing sea salt
> aerosol emissions in the marine tropics. We find the climate response to a
> protocol of this scheme temporally stable over the time period of the
> simulation, though spatially uncertain. Moreover, the response is largely
> dominated by effects resulting from the direct interactions between aerosol
> particles and solar radiation, and not via clouds. Our results paint a more
> nuanced picture than previous studies and as such raise more questions and
> uncertainties about proposals for marine cloud brightening, at least
> through the prism of state-of-the-art climate models.
> [image: Details are in the caption following the image]
> 
> Figure 1
> Caption
>
> Annual global-means shortwave radiation imbalance atop the atmosphere (SWR
> TOA) from the fixed-sea surface temperature simulation (2020–2030) and the
> coupled simulation (2020–2090). The all-sky (All) radiation is decomposed
> into the conventional clear-sky (Clear) and the difference between all-sky
> and clear-sky (All − Clear) as well as into the Ghan (2013
>