Poster's note : interesting paper showing passive CDR into desert aquifers due to irrigated agriculture - a process which can inform future tCDR techniques and modelling
http://onlinelibrary.wiley.com/doi/10.1002/2015GL064222/full?campaign=wlytk-41855.5282060185 Hidden carbon sink beneath desert Authors Yan Li, Yu-Gang Wang, R. A. Houghton, Li-Song Tang 28 July 2015 DOI: 10.1002/2015GL064222 Abstract For decades, global carbon budget accounting has identified a “missing” or “residual” terrestrial sink; i.e., carbon dioxide (CO2) released by anthropogenic activities does not match changes observed in the atmosphere and ocean. We discovered a potentially large carbon sink in the most unlikely place on earth, irrigated saline/alkaline arid land. When cultivating and irrigating arid/saline lands in arid zones, salts are leached downward. Simultaneously, dissolved inorganic carbon is washed down into the huge saline aquifers underneath vast deserts, forming a large carbon sink or pool. This finding points to a direct, rapid link between the biological and geochemical carbon cycles in arid lands which may alter the overall spatial pattern of the global carbon budget. -- 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. For more options, visit https://groups.google.com/d/optout.
