Fwd: Doug MacMartin video

[Ron Baiman]

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 <robbi...@gmail.com>
Date: Fri, Nov 3, 2023 at 7:39 AM
Subject: Doug MacMartin video
To: H simmens <hsim...@gmail.com>, Ron Baiman <rpba...@gmail.com>

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

[Clive Elsworth]

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

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