Re: [geo] annual per capita cost of geoengineering

2018-02-04 Thread Stephen Salter
Andrew I expect that most of the monitoring will be happening already and with 600 vessels there is already quite a lot of redundancy. We might be paid for sending local surface observations.  Operations will be far enough from shore to discourage piracy. However if you want the double the

Re: [geo] annual per capita cost of geoengineering

2018-02-04 Thread Andrew Lockley
That ignores monitoring and security costs, and also overlooks the cost of providing redundancy On 4 Feb 2018 15:14, "Stephen Salter" wrote: Andrew Allowing for spray vessels being in the wrong place or out of action I would like a fleet of 600 to hold warming at its present

Re: [geo] annual per capita cost of geoengineering

2018-02-04 Thread Stephen Salter
Andrew Allowing for spray vessels being in the wrong place or out of action I would like a fleet of 600 to hold warming at its present level.  This is based on the assumptions of figure 3 of my Phil. Trans. 2008 paper and could be adjusted for any others. At $4 million US per vessel based

Re: [geo] annual per capita cost of geoengineering

2018-02-04 Thread Ronal W. Larson
Andrew: cc list For biochar, add the concepts of internal rate of return (IRR) and recommended analysis time period (30 years? 100 years?) (as a few of the needed extra parameters, for given types of soil, climate, species, etc). First cost is not the right parameter. Ron > On