Re: [geo] Some refreshers to remind us why we need geoengineering...

2013-01-16 Thread Andrew Lockley
To place Veli's post in context, here's a discussion of recent SLR research. I think the commentator's conclusion is quite balanced. Graphs and links in online version. Sorry but Hansen's paper can't be retrieved at present. :

Re: [geo] Some refreshers to remind us why we need geoengineering...

2013-01-16 Thread David Lewis
a version of the Hansen paper in question is available herehttp://www.columbia.edu/~jeh1/mailings/2011/20110118_MilankovicPaper.pdf It contains the quotes Staniford is using verbatim. On Wednesday, January 16, 2013 12:58:19 AM UTC-8, andrewjlockley wrote: To place Veli's post in context,

Re: [geo] Ocean based algal growth: rate of CO2 transfer

2013-01-16 Thread Chris
Michael, While deep seawater in the ocean does indeed contain a great deal of nutrients, it also contains high levels of dissolved inorganic carbon derived from the degradation of sinking organic matter generated in surface waters. Thus, bringing deep seawater to the surface will lead to

[geo] fun fact: area of USA (or Europe) is about 2% of planetary area

2013-01-16 Thread Ken Caldeira
Folks, To offset the global mean temperature response to a doubling of atmospheric CO2 content, you need to deflect back to space about 2% of sunlight reaching the Earth. This is often a hard number to get your head around. Well, it turns out that the area of the US is almost 10 million km2

Re: [geo] (Recovering CO2 from seawater for) A Zero Emissions Vehicle Fuel? | The Energy Collective

2013-01-16 Thread RAU greg
Extracting CO2 from seawater would be effective, but still costly, esp with fuel production. Biology also does this extraction, but scaling this up (OIF) could get messy and have unwanted side effects. It would seem much simpler and safer to chemically consume excess ocean CO2 by converting