A very interesting idea. Some random thoughts: 1) Geoeng proposals often involve carbonate rock. Should we be looking at these too? 2) A lot of aquifers are depleted due to pumping. Does anyone know the effect on the carbon cycle? 3) Freeze-thaw cycling is responsible for a lot of surface weathering. Is this slowing down as the surface ice retreats? 4) Huge amounts of rock is blasted for mining, and this doesn't seem to be offsetting global warming. Will blasting more make any difference? 5) Increased CO2 in the atmos may mean slightly more acidic rain. Will this make a difference? 6) Do any GCMs incorporate minerals effects?
I am sure I will think of some more vital q's as soon as I hit send :-) A 2009/2/1 dsw_s <ds...@yahoo.com>: > > Just another brainstormy (i.e. no idea whether it's any good) idea: in > the long run, what takes CO2 out of the atmosphere is weathering of > silicate rock to produce carbonate that winds up in sediment. I think > that in many areas the soil and subsoil (where groundwater percolates) > are fairly completely weathered. Could we speed up removal of CO2 > from the atmosphere by creating cracks in bedrock for water to > percolate through, by altering topography to make water flow into and > out of the ground, by changing the patterns of use of aquifer water > and surface water, or by using aquifer recharge as a means of storing > water for municipal use? > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to geoengineering@googlegroups.com To unsubscribe from this group, send email to geoengineering+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
