I have promised some critical views from skeptics regarding the Paris Agreement Roadmap to zero CO2 emissions by 2050. If you need to get up to speed regarding the Paris Agreement Roadmap, please review my last two postings.
Let’s begin with Judith Curry’s thoughts on this topic from her posting of 25 March titled “A roadmap for meeting Paris emissions reductions goals”.
Apart from the issues raised in this paper, there are several other elephants in this room: there is growing evidence of much smaller climate sensitivity to CO2; and even if these drastic emissions reductions occurred, we would see little impact on the climate in the 21st century (even if you believe the climate models).
I think that what this paper has done is important: laying out what it would actually take to make such drastic emissions reductions. Even if we solve the electric power problem, there is still the problem of transportation, not to mention land use. Even if all this was technically possible, the cost would almost certainly be infeasible.
As Oliver Geden states, its time to ask policy makers whether they are going to attempt do this or not. It seems rather futile to make token emissions reductions at substantial cost.
Deciding that all this is impractical or infeasible seems like a rational response to me. The feasible responses are going with nuclear power or undertaking a massive R&D effort to develop new emission free energy technologies. Independent of all this, we can reduce vulnerability from extreme weather events (whether or not they are exacerbated by AGW) and the slow creep of sea level rise.
Dr. Curry’s remarks are very succinct. To be a success, the roadmap requires many inventions that to date have been sought after but not delivered. And she points out, as noted in this blog on a number of occasions, the climate sensitivity used by the warmers gives temperature increases that are unsupportable. This roadmap is necessary in large part because it is predicated on those exaggerated temperatures the climate models produce. That is Dr. Curry’s “elephants in the room.”
And she thinks it is way too costly. I believe she is spot on.
Dr. Currys posting can be accessed this link https://judithcurry.com/2017/03/25/a-roadmap-for-meeting-paris-emissions-reductions-goals/
Some additional comments to follow in the next posting.