Ken, cc list I thought your annual review piece was generally good and for most technologies, probably helpful. But I fail to understand your non-treatment of biochar. You only used the word once - in a Table. I think "Annual Reviews" lost a good many potential purchasers.
There are many reasons to leave out a technology that more than a few would think warranted inclusion. Too small a future? Too large a future? Too many publications? Too few? Too controversial? Too complicated to analyze? Too unlike the others? Ran out of time? Someone dropped the ball? Wrong "Annual Review"? Best of all could be that "Annual Reviews" is planning a separate biochar chapter , but then someone dropped a different ball. I don't claim to be a disinterested bystander, but I have no financial interest in any biochar company. So, being biased, I may be wrong, when I hazard these guesstimates on the biochar "industry", comparing to any (repeat any) of the CDR (or SRM) technologies you did cover. a. More annual technical peer reviewed papers b. More academic departments and more theses c. More investment. More by large energy companies. d. More conferences and larger number of papers at conferences e. A longer history of use f. More employees, largest company g. More current sales and users, more countries , faster growth rate h. More varied approaches and more energy aspects (end use sectors, physical forms) i. More local support chapters and groups Anyone care to trade numerical values on any of these for one covered by Ken? My answers (repeat guesstimates) mostly will come from www.biochar-internatonal.org Ken: I hope you can explain your rationale for ignoring biochar. I have to ask , since I am sure to be asked. Apologies. Ron ----- Original Message ----- From: "Ken Caldeira" <[email protected]> To: "geoengineering" <[email protected]> Sent: Wednesday, June 5, 2013 3:40:13 PM Subject: [geo] [paper] Science of Geoengineering, in Annual Reviews of Earth and Planetary Sciences This link goes through their porous paywall and gives anyone free access to the pdf: http://www.annualreviews.org/eprint/8NiUE6HXETbrWNj3ybct/full/10.1146/annurev-earth-042711-105548 The Science of Geoengineering Annual Review of Earth and Planetary Sciences Vol. 41: 231-256 (Volume publication date May 2013) DOI: 10.1146/annurev-earth-042711-105548 Ken Caldeira, 1 Govindasamy Bala, 2 and Long Cao 3 1 Department of Global Ecology, Carnegie Institution for Science, Stanford, California 94305; email: [email protected] 2 Center for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bangalore 560 012, India 3 Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China Abstract. Carbon dioxide emissions from the burning of coal, oil, and gas are increasing atmospheric carbon dioxide concentrations. These increased concentrations cause additional energy to be retained in Earth's climate system, thus increasing Earth's temperature. Various methods have been proposed to prevent this temperature increase either by reflecting to space sunlight that would otherwise warm Earth or by removing carbon dioxide from the atmosphere. Such intentional alteration of planetary-scale processes has been termed geoengineering. The first category of geoengineering method, solar geoengineering (also known as solar radiation management, or SRM), raises novel global-scale governance and environmental issues. Some SRM approaches are thought to be low in cost, so the scale of SRM deployment will likely depend primarily on considerations of risk. The second category of geoengineering method, carbon dioxide removal (CDR), raises issues related primarily to scale, cost, effectiveness, and local environmental consequences. The scale of CDR deployment will likely depend primarily on cost. _______________ Ken Caldeira Carnegie Institution for Science Dept of Global Ecology 260 Panama Street, Stanford, CA 94305 USA +1 650 704 7212 [email protected] http://dge.stanford.edu/labs/caldeiralab @kencaldeira Caldeira Lab is hiring postdoctoral researchers. http://dge.stanford.edu/labs/caldeiralab/Caldeira_employment.html -- 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 post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering?hl=en . For more options, visit https://groups.google.com/groups/opt_out . -- 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 post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/geoengineering?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
