Congrats!. Will read with interest. In the meantime my questions are: 1) does this differ in concept from Metzger and Benford 2001? 2) crop residues contain other things besides C, such as N, P, trace elements, etc. By removing these from land won't this require greater fertilizer use to maintain crop production? 3) Barring dumping in existing anoxic zones, might (some) decomposition in water column/sed surface impact deep (and eventually via circulation, surface) ocean chemistry and biology?
Thanks, Greg go dawgs >We have just published the following peer reviewed article in >Environmental Science and Technology: > > ><http:// pubs.acs.org/doi/abs/10.1021/es8015556>Ocean Sequestration >of Crop Residue Carbon: Recycling Fossil Fuel Carbon Back to Deep >Sediments > >Stuart E. Strand and Gregory Benford > >For significant impact any method to remove CO2 from the atmosphere >must process large amounts of carbon efficiently, be repeatable, >sequester carbon for thousands of years, be practical, economical >and be implemented soon. The only method that meets these criteria >is removal of crop residues and burial in the deep ocean. We show >here that this method is 92% efficient in sequestration of crop >residue carbon while cellulosic ethanol production is only 32% and >soil sequestration is about 14% efficient. Deep ocean sequestration >can potentially capture 15% of the current global CO2 annual >increase, returning that carbon back to deep sediments, confining >the carbon for millennia, while using existing capital >infrastructure and technology. Because of these clear advantages, we >recommend enhanced research into permanent sequestration of crop >residues in the deep ocean. > >Available on line here: > ><http:// pubs.acs.org/journal/esthag>http:// pubs.acs.org/journal/esthag > >or email me requesting a reprint > > = Stuart = > >Stuart E. Strand >167 Wilcox Hall, Box 352700, Univ. Washington, Seattle, WA 98195 >voice 206-543-5350, fax 206-685-3836 >skype: stuartestrand >http:// faculty.washington.edu/sstrand/ > >Using only muscle power, who is the fastest person in the world? >Flying start, 200 m 82.3 mph! <http:// >en.wikipedia.org/wiki/Sam_Whittingham>http:// >en.wikipedia.org/wiki/Sam_Whittingham >Hour <http:// >en.wikipedia.org/wiki/Hour_record>http:// >en.wikipedia.org/wiki/Hour_record > 55 miles, upside down, backwards, and head first! > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
