15A.5 CO2 Sequestration and Storage in Antarctica: Effects on Global Redistribution

Thursday, 26 January 2017: 12:00 AM
605 (Washington State Convention Center )
Andrea Orton, Purdue University, West Lafayette, IN; and E. M. Agee and M. E. Baldwin

The climatological risk of continued increase in anthropogenic CO2 into the global atmosphere may require extreme climate intervention.  The historic benchmark site of Mauna Loa now remains above 400 ppmv.  Interestingly, this potent GHG does not consist of much mass (1GtC = 0.5 ppmv of CO2) and dry ice snow deposition in Antarctica would only occupy a compacted volume of 2km × 2km × 160 m.  Direct Air Capture through LN2 closed-loop refrigeration at 1 bar of pressure has been proposed by Agee et al., (2013) and conceptually demonstrated in laboratory experimentation by Agee and Orton (2016).  CO2 sequestration and storage in Antarctica introduces the concept of creating a CO2 hole in the atmosphere that creates intriguing questions regarding 1) effect on global atmospheric dispersion rate of CO2 to Antarctica, 2) compounded effects of successive years of sequestration leading to substantial decreases in atmospheric CO2 greater than 10 ppmv, 3) climate sensitivity to reductions, based on climate model predictions, and 4) continued CO2 reduction to 19th century levels and investigation of associated climate hysteresis effects through climate model comparisons to future versus past climate with the same CO2 content.  The first of these four project goals has deployed the global WRF (GWRF) model to examine the dispersion rate of CO2 transport from the Northern Hemisphere to the Antarctic polar region and results will be discussed based on a number of sequestration scenarios.
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