How do ratings agencies work? How can you get into the lucrative and rewarding commercial CDR sector? Victoria Harvey from BeZero makes @geoengineering1 jealous with her meteoric career ascent. NB some technical gremlins ruined @geoengineering1's audio quality after about 30m. We don't know why. Sorry! Check out Be Zero's jobs. https://bezerocarbon.teamtailor.com/jobs Read the CDR scaling report https://bezerocarbon.com/insights/carbon-removal-scalability-assessment-summary-report/ Meet Victoria...
Jul 26, 2023•1 hr 22 min
Garrett Boudinot (@FGBoudinot) of @vycarb schools @geoengineering1 on the challenges and opportunities of deploying ERW in Africa and India. Paper: "Enhanced Rock Weathering in the Global South: Exploring Potential for Enhanced Agricultural Productivity and Carbon dioxide Drawdown" https://precisiondev.org/wp-content/uploads/2023/01/IGSDPxD-ERW-Enhanced-Rock-Weathering-in-the-Global-South-26-02-23.pdf Other episodes relevant to this subject and discussed in the podcast are: Undo https://open.spo...
Jul 14, 2023•1 hr 7 min
What gives biochar its stability? How dependable is its carbon sequestration in soil? How can we optimise its source materials and manufacturing process, to store the maximum amount of carbon? Nikolas Hagemann explains his paper "Permanence of soil applied biochar." https://www.biochar-journal.org/en/ct/109-Permanence-of-soil-applied-biochar
Jun 26, 2023•1 hr 26 min
Cafer Yavuz explains his revolutionary process for locking CO2 up into an inexpensive solid salt matrix, which allows it to be stored and transported as easily as sand. Paper: "Synthesis of stable single-crystalline carbon dioxide clathrate powder by pressure swing crystallization" https://www.sciencedirect.com/science/article/pii/S2666386423001510?via%3Dihub
Jun 15, 2023•48 min
Alistair Duffey picks up the baton from Madelyn Hotaling's previous episode. He gives further comparison of several polar geoengineering technologies: SAI, MCB, CCT, and microspheres. Does any approach offer us a reliable and safe way to target the Arctic? Paper discussed Solar Geoengineering in the Polar Regions: A Review Alistair Duffey, Peter Irvine, Michel Tsamados, Julienne Stroeve First published: 31 May 2023 https://doi.org/10.1029/2023EF003679 Additional paper mentioned Mixed-phase regim...
Jun 13, 2023•1 hr 51 min
Ryan Anderson explains how Parallel Carbon calcines limestone at ambient temperature, using a membrane-free aqueous electrolysis process. Could this emergent technology be the cheapest and simplest way to integrate DAC with renewable energy?
Jun 10, 2023•1 hr 1 min
Madelyn Hotaling effortlessly bats away a particularly gruesome inquisition from @geoengineering1, defending her work on arctic ice management. FYI paper discussion starts around 19 minutes in. Paper: Comparing Arctic Surface Albedo Modification Geoengineering Solutions Authors Madelyn Hotaling Lakewood Ranch High School Tammy Harper DOI: https://doi.org/10.47611/jsrhs.v12i1.3235
May 31, 2023•1 hr 16 min
Bala schools @geoengineering1 on the mechanisms behind the monsoon (Inter Tropical Convergence Zone, Indian Ocean Dipole, etc.), then explains what might go wrong if SAI is only done in the Northern Hemisphere. Paper: "Quantification of tropical monsoon precipitation changes in terms of interhemispheric differences in stratospheric sulfate aerosol optical depth" (https://www.researchgate.net/publication/370468285_Quantification_of_tropical_monsoon_precipitation_changes_in_terms_of_interhemispher...
May 17, 2023•1 hr 37 min
Eelco Rohling debunks some common myths about marine CDR. Paper: Marine methods for carbon dioxide removal: fundamentals and myth-busting for the wider community https://academic.oup.com/oocc/advance-article/doi/10.1093/oxfclm/kgad004/7135823?login=false
May 10, 2023•1 hr 26 min
Alec Feinberg compares SAI with surface albedo modification, CDR, and space mirrors. In a rare moment of clarity, @geoengineering1 notices he isn't keeping up. Paper 1: Solar Geoengineering to Stop Annual Global Warming. https://www.researchgate.net/publication/369034073_Solar_Geoengineering_to_Stop_Annual_Global_Warming Paper 2 Solar Geoengineering Modeling and Applications for Mitigating Global Warming: Assessing Key Parameters and the Urban Heat Island Influence, Frontiers in Climate, https:/...
May 02, 2023•1 hr 17 min
Joshua Horton (@JoshuaHorton533) tells @geoengineering1 which nations will dominate SRM research. Paper "Solar geoengineering research programs on national agendas: a comparative analysis of Germany, China, Australia, and the United States" https://link.springer.com/article/10.1007/s10584-023-03516-1
Apr 30, 2023•47 min
Einar Tyssen from removr.no talks about the firm and the plan to get zeolite DAC to 1Mtpa. Hosted by @geoengineering1. Part of Dirty Cash series on climate firms.
Apr 20, 2023•1 hr 3 min
Linquan Mu and Jamie Palter explain the limitations of adding quicklime to rivers. Preprint paper: Considerations for hypothetical carbon dioxide removal via alkalinity addition in the Amazon River https://egusphere.copernicus.org/preprints/2023/egusphere-2022-1505/
Apr 01, 2023•37 min
Why sign SRM treaties? What makes them stable and useful? Do they need to be stated, or are norms enough? Niklas Lehmann tries to convince a skeptical @geoengineering1 of the usefulness of game theory for modelling key questions in international relations. Paper: Exploring the stability of solar geoengineering agreements https://econpapers.repec.org/paper/arxpapers/2210.09145.htm - Niklas V. Lehmann, October 2022
Mar 20, 2023•1 hr 25 min
David Morrow returns! He discusses his unconventional transition from philosophy to integrated assessment modelling. @geoengineering1 gets schooled on how the GCAM model was modified to incorporate different CDR technologies, with varying levels of realism. Paper: "GCAM-CDR v1.0: enhancing the representation of carbon dioxide removal technologies and policies in an integrated assessment model" https://gmd.copernicus.org/articles/16/1105/2023/
Mar 18, 2023•1 hr 8 min
Is it practical and sensible to turn deserts into forests, using desalination & irrigation? Upeksha Caldera discusses her new paper with @geoengineering1. Paper "Afforesting arid land with renewable electricity and desalination to mitigate climate change" (https://www.nature.com/articles/s41893-022-01056-7).
Mar 09, 2023•1 hr 6 min
Naser 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)
Mar 02, 2023•1 hr 10 min
How can we merge the concepts of slippery slopes and the precautionary principle? James Andow explains how precautionary evaluation of risks can help us evaluate both the risks of ending up on a slippery slope to deployment, and the risks resulting from deployment. James argues that we need to concern ourselves with risks, not just inevitabilities, when considering slippery slopes. For additional reading discussed, see books "Innate" and "the WEIRDest people in the world". Paper: "Slippery Slope...
Mar 02, 2023•1 hr 36 min
Un-do spreads crushed basalt on farms, and sells the carbon removals to Frontier. @geoengineering1 has concerns about scaling.
Mar 02, 2023•1 hr 10 min
Andreas Hein entertains @geoengineering1 with more barmy space-based geoengineering nonsense. Expect moon dust, rail guns, space junk, cube sats and all sorts of other semi-relevant distractions. Paper: Transparent occulters: A nearly zero-radiation pressure sunshade to support climate change mitigation https://doi.org/10.1016/j.actaastro.2022.12.006
Feb 24, 2023•1 hr 22 min
Peter Fiekowsky and @geoengineering1 discuss Iron Salt Aerosols. Do they work (in 14 different ways)? How can we know? Is Peter's new voluntary regulation body bona fide, or hopelessly compromised? Reviewer 2 asks all the important questions, but doesn't necessarily get definitive answers.
Feb 24, 2023•1 hr 39 min
What counts as a tree, and how do you count trees? What do you do when you're surprised by a grizzly bear? How do you get data from despots? Will AI replace humans, when it comes to analysing ecological data? Do ecologists hibernate in winter? Jingjing Liang from Purdue answers all these questions, and more.
Feb 18, 2023•1 hr 18 min
Xavier Dupla discusses heavy metal contamination of soil and water, following enhanced weathering soil treatment. How much is too much? And what can we have to to clean up toxic residues? Citation: Dupla, X., Möller, B., Baveye, P.C. and Grand, S. (2023), Potential accumulation of toxic trace elements in soils during enhanced rock weathering. Eur J Soil Sci. Accepted Author Manuscript e13343. https://doi.org/10.1111/ejss.13343
Feb 16, 2023•1 hr 17 min
Good morning, Reviewer 2 listeners. This is Pete Irvine from Challenging Climate. I've been a little disappointed by the Reviewer 2 crew starting a turf war with us, so I've decided to finish it. Today, Jesse and I have paid their studios a little visit - and it's safe to say I don't think we'll be having much trouble from Reviewer 2 in future. Right now, Jesse has @geoengineering1 down in the basement. - showing him the error of his ways. I'm sure he'll learn very quickly. Now, we don't want tr...
Feb 09, 2023•51 min
Reviewer 2 reluctantly agrees to dish out another drubbing to "radical" economist Ron Baiman. @geoengineering1 discusses Ron's new paper on balancing short-term cooling - both local and global - with long-term CDR. Also, check out Ron's popular episode from last year on the Green New Deal. Links below: Paper "Our Two Climate Crises Challenge: Short-Run Emergency Direct Climate Cooling and Long-Run GHG Removal and Ecological Regeneration": https://journals.sagepub.com/doi/abs/10.1177/048661342211...
Feb 04, 2023•56 min
Hot off the press, Sara Nawaz, Terre Satterfield and Devin Todd discuss their brand new paper on DAC acceptance with @geoengineering1. This episode was prerecorded, during the paper's editorial process. Paper: Exploring public acceptability of direct air carbon capture with storage: climate urgency, moral hazards and perceptions of the ‘whole versus the parts’ https://link.springer.com/article/10.1007/s10584-023-03483-7 - additional paper "Public evaluations of four approaches to ocean-based car...
Feb 02, 2023•57 min
Can microwave regeneration eliminate the need for wasteful heating, in the DAC desorb step? @geoengineering1 interviews Fan Shi, McMahan Gray, and David Battaglia, from NETL. Paper: Energy-Efficient and Water-Saving Sorbent Regeneration at Near Room Temperature for Direct Air Capture. https://www.sciencedirect.com/science/article/abs/pii/S2589234723000076
Feb 01, 2023•1 hr 14 min
Max Franks and Frank Venmans are interviewed by Robert Höglund on how to price temporary carbon storage. Matthias Kalkuhl, Max Franks, Friedemann Gruner, Kai Lessmann, Ottmar Edenhofer https://www.cesifo.org/node/73501 Frank Venmans and Ben Groom. Social value of offsets: https://www.frbsf.org/economic-research/wp-content/uploads/sites/4/groom-vsce-121621-paper.pdf Frank et als paper on technological change that is mentioned: https://iaee2022.org/files/timetable/T000353_23_1.pdf
Jan 31, 2023•53 min
Jörg Schwinger presents work showing temperature overshoots can be recovered from, using CDR. @geoengineering1 finds lots to take issue with - model processes, intergenerational equity, and the risk of misinterpretation of superficially-reassuring studies. Paper: Emit now, mitigate later? Earth system reversibility under overshoots of different magnitudes and durations https://esd.copernicus.org/articles/13/1641/2022/
Jan 27, 2023•1 hr 17 min
Marion Hourdequin explains her paper, which criticised Horton & Keith's justifications for SRM research. Considering various types of justice, she explains why tech-bro solutions often meet such fierce resistance. Climate Change, Climate Engineering, and the ‘Global Poor’: What Does Justice Require? Marion Hourdequin https://doi.org/10.1080/21550085.2018.1562525
Jan 26, 2023•1 hr 28 min
