Rob,
As I have pointed out to Peter Fiekowsky in a number of emails on the NOAC meetings emails, the claim that ocean fertilization could sequester tens of gigatons of carbon in the ocean is not credible. In his 1990 paper, John Martin says “…very small amounts of Fe are needed; that is, the molar ratios of C to Fe are of the order of 10,000 (Fe replete [Morel and Hudson, 1985]) to 100,000:1.0 (Fe deficient [Anderson and Morel, 1982]).” These figures are for the productivity of Fe in the surface mixed layer NOT the amount sequestered beneath it. He also says “One can even contemplate the ultimate enrichment experiment: the fertilization of the whole southern ocean (the largest by far of the HNLC areas) with 430,000 tons of Fe, the amount required to support the removal of 3 Gt C yr-1 ”. Note that this time the latter figure is for removal i..e., sequestration NOT the productivity generated in the surface mixed layer by the deposition of the Fe. The 3 Gt C yr-1 is rather different from what Peter and you envisage is possible. I calculated that the removal of 3 Gt C yr-1 using 430,000 t Fe gives a Fe : C ratio of 1 : 32,472, much lower than Peter uses in his calculations. Chris. From: 'rob de laet' via Healthy Planet Action Coalition (HPAC) <[email protected]> Sent: Tuesday, August 15, 2023 10:46 PM To: healthy-planet-action-coalition <[email protected]>; 'Eelco Rohling' via NOAC Meetings <[email protected]>; Planetary Restoration <[email protected]>; Healthy Climate Alliance <[email protected]>; geoengineering <[email protected]>; Ron Baiman <[email protected]> Cc: SALTER Stephen <[email protected]>; Russ George <[email protected]> Subject: Re: Request for Feedback: Open Letter Supporting Research on Three Responses to Warming Impact of Bunker Fuel Regulations Dear Ron, Perfect letter IMHO! Would love to see you then move on to embracing ocean restoration as a direct means to sequester carbon, increase cloud formation, precipitation and increased thermal radiation into outer space, cooling the planet. We know that through measures of ocean fertilization and other ocean biology revival measures we can sequester maybe beyond 30 Gt of CO2 per year, fight acidification, repopulate the oceans with fish and marine animals, increase vertical ocean mixing cooling surface tempertures and have all the above effects I described in the first sentence. <https://www.linkedin.com/in/robdelaet/> Rob de Laet <https://www.ecorestorationalliance.net/> Member of the Eco Restoration Alliance <https://www.evergreening.org/> Fellow of the Global Evergreening Alliance WhatsApp: +55 71 992617846 On Tuesday, 15 August 2023 at 23:22:45 CEST, Ron Baiman <[email protected] <mailto:[email protected]> > wrote: Dear Colleagues, I would greatly appreciate suggested edits and comments to this proposed open letter: https://docs.google.com/document/d/1ewSMGl1bnh-umD86pT0x_2-EvaZUHbe1/edit?usp=sharing <https://docs.google.com/document/d/1ewSMGl1bnh-umD86pT0x_2-EvaZUHbe1/edit?usp=sharing&ouid=116465941111195452408&rtpof=true&sd=true> &ouid=116465941111195452408&rtpof=true&sd=true Most importantly, does the text and the three requests (one inspired by a comment from Stephen Salter) make sense, and is the overall descriptive language accurate? Thank you! Best, Ron Baiman -- 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/CAPhUB9BPaifrSK7A6v1WT8JZvHJGr-xO-KtHfyYk7XvKcpQF7A%40mail.gmail.com <https://groups.google.com/d/msgid/healthy-planet-action-coalition/CAPhUB9BPaifrSK7A6v1WT8JZvHJGr-xO-KtHfyYk7XvKcpQF7A%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 "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/1742666228.136956.1692135959357%40mail.yahoo.com <https://groups.google.com/d/msgid/healthy-planet-action-coalition/1742666228.136956.1692135959357%40mail.yahoo.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/056101d9d037%24a11ef6c0%24e35ce440%24%40btinternet.com.
