A method of converting biomass into charcoal and mixing this into the soil to store the burnt carbon.
But field trials showed that biochar-treated soils were less effective in sequestering carbon than untreated soils: the added carbon stimulates microbes to release more CO2.
Claims that addition of biochar enhances agricultural productivity has not been consistently demonstrated.
On Sep 2, 2019, at 2:54 AM, Andrew Lockley <andrew....@gmail.com> wrote:<GNDE-A-Blueprint-for-Europes-Just-Transition.pdf>
On Sep 2, 2019, at 3:20 PM, <gfut...@worldward.org> <gfut...@worldward.org> wrote:Hi Ron,This draft is in public consultation period, so I would recommend you sending your critiscm to the authors of the report (on the GND for Europe website) a sthe may edit some bits if criticedBest wishesGideon Futerman
President of Worldward<Mail Attachment.jpeg>
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What I find most problematic about this narrative, beyond quibbling with many of its quantitative assessments, is its immaturity. It essentially constructs a straw man that contemplates massive deployment of discrete CDR approaches, e.g. BECCS, or afforestation, and surprise, concludes that it’s unlikely to be sustainable at scales of 15 Gt or more. Of course, virtually everyone in the CDR community acknowledges this, and embraces a complementary portfolio approach, which could address many of the concerns in the document. It’s important to reach out when draft documents like this are published to try to establish a colloquy. Wil
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[RWLa: For the last several years, the word “Geoengineering” has been disassociated from biochar - my only topic. I urge being very careful with use of the word “Geoengineering” - which today is almost solely reserved for SRM = solar radiation management..On Sep 28, 2019, at 10:19 AM, Pawel Wargan <pawel....@gndforeurope.com> wrote:Ronal,Thank you so much for this invaluable feedback and please accept my apologies for taking so long to reply.Just for clarification, our position on geoengineering is based on a few points that are core to our campaign — and to much of the climate movement.
[RWL1: I totally agree with the first sentence - and claim that biochar benefits, not exploits, land and people.
The most crucial is the need to achieve climate justice — this means finding solutions that do not contribute to the continued exploitation of land and people around the globe. That excludes CCS.
[RWL2: This second point also has no relation to biochar. Biochar is unique in being able to support non-dispatchable wind and solar systems - which I presume you favor (and are certainly key in all GND programs). Wind, solar and biomass (including biochar) are consistent with both reduced energy demand and reduced fossil fuel demand..
Second, all of the key scientific models informing political decisions today assume continued economic growth. Our paper is grounded in post-growth principles, which call for a reduction in material throughput and energy demand. This should reduce the need for geoengineering solutions.
Third, the references in the IPCC to geoengineering (particularly BECCS technologies) were inserted largely by economists — historically, they, not the scientists, were responsible for drafting policy recommendations on climate. This has produced recommendations that reflect what is "politically achievable”, not what is scientifically necessary.
[RWL4: My reading of the Green New Deal is different - that we MUST remove atmospheric carbon - which you seem to be denying. I see no reason to say that biochar is designed for “continued extraction” - just the opposite since biochar is both carbon neutral (for every energy end use - not just electricity) and carbon negative.
Fourth, we want to end all uses of fossil fuels — zero emissions; not net-zero emissions. Technologies that enable the continued extraction and utilisation of oil and gas therefore cannot form part of our programme.
Having said that, we want to be accurate in our account of these technologies. In particular, we see a large role for public sector-driven R&D in climate and environmental mitigation tools and strategies — and tools like biochar could form part of that.
Do you have any academic papers on the topic that you could share, beyond the one by Zimmerman, Gao, and Ahn?
All the best,Pawel
Pawel Wargan
Campaign Coordinator<D2D78A50E3DA4198A186502C69426837.png> @gndforeurope
@pawelwargan
<GNDE-A-Blueprint-for-Europes-Just-Transition.pdf>