Doug
Thanks for a great presentation, which I watched last night. May I suggest an addition? Tropospheric cooling could also be done by a widespread thin haze over the ocean, which would theoretically reduce radiative forcing about the same as brightening clouds. (Lars Ahlm 2017, Marine cloud brightening – as effective without clouds, https://acp.copernicus.org/articles/17/13071/2017/) The paper’s rationale is that haze lasts much longer before raining out, which compensates for its lower instantaneous negative forcing. Such a haze would provide a lot less ‘lumpy’ cooling than MCB and could provide smoother control options. Of course, someone must think of a safe, low-cost haze maker. Our ‘Climate Photocatalyst’ would make such a haze, and simultaneously accelerate removal of atmospheric methane and other short-lived climate forcers. Like everyone else though, we are open to funding to test the aerosol. Clive From: [email protected] <[email protected]> On Behalf Of Ron Baiman Sent: Friday, November 3, 2023 4:53 PM To: healthy-planet-action-coalition <[email protected]>; Planetary Restoration <[email protected]>; 'Eelco Rohling' via NOAC Meetings <[email protected]>; Healthy Climate Alliance <[email protected]>; geoengineering <[email protected]> Subject: Fwd: Doug MacMartin video Dear Colleagues, Linked above is a recording of yesterday's (11/2/2023) Doug MacMartin HPAC presentation and discussion. I believe that all participants would agree that this was a superb presentation and good discussion that I heartily recommend viewing if you were unable to attend. Best, Ron ---------- Forwarded message --------- From: Robbie Tulip <[email protected] <mailto:[email protected]> > Date: Fri, Nov 3, 2023 at 7:39 AM Subject: Doug MacMartin video To: H simmens <[email protected] <mailto:[email protected]> >, Ron Baiman <[email protected] <mailto:[email protected]> > Hi Herb & Ron I got a new computer and have not yet installed my email on it, so can only use this gmail account to send emails. Here is the recording of Doug's meeting. Could you please circulate it. https://www.youtube.com/watch?v=hVHrTlbfwNQ I will send a dropbox link to put it on the HPAC website thanks Robert -- You received this message because you are subscribed to the Google Groups "Healthy Planet Action Coalition (HPAC)" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected] <mailto:[email protected]> . To view this discussion on the web visit https://groups.google.com/d/msgid/healthy-planet-action-coalition/CAPhUB9BzSokeKYtya6-P2MoJhzQCYgS3j%3DiOZ%3D8mJ2Pyt3jhhg%40mail.gmail.com <https://groups.google.com/d/msgid/healthy-planet-action-coalition/CAPhUB9BzSokeKYtya6-P2MoJhzQCYgS3j%3DiOZ%3D8mJ2Pyt3jhhg%40mail.gmail.com?utm_medium=email&utm_source=footer> . For more options, visit https://groups.google.com/d/optout. -- 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/1b9401da0f66%247ad76bf0%24708643d0%24%40EndorphinSoftware.co.uk.
