Dr Glen Peters on “Stylised pathways to `well below 2°C”’, and some solutions from Dr Steven Chu (but it’s late!)

Stylized pathways to “well below 2°C”

Dr Peters has also written about “Can we really limit global warming to `well below’ two degrees centigrade?” An excerpt and abstract:

Commentary: Yes, but only in a model. We have essentially emitted too much carbon dioxide already, and the most feasible pathways to stay “well below” two degrees all require removing carbon dioxide from the atmosphere at an unprecedented scale.

See the article for more details. And, note, I’ve written about how extraordinarily expensive negative emissions industry is, in two articles. Even assuming the engineering technology and practical rollout for such a huge global project are developed, something which might take decades by itself, we’re talking about multiples of Gross World Product to make an appreciable dent in atmospheric CO2 at projected prices. Dr Peters is not optimistic either.

And see the `stylized pathways’ article for how hard it is to keep emissions below some threshold — and so mean global temperature below some threshold — if there are delays in emissions reduction.

Dr Steven Chu gave a presentation recently at Amherst College on the risks, and concerning possible solutions:

(Dr Chu begins at time index 445.)

Notably, apart from reforestation and improvements in agricultural practice, Dr Chu does not address negative emissions technology as a feasible solution but he speaks to the difficulty. Reforestation and improvements in agriculture can help with 8% of CO2 emissions, specifically:

Restoring Carbon in soils has the potential to sequester 20 Gt of CO2 (~ 8% of cumulative CO2 emissions …)

About ecoquant

See https://wordpress.com/view/667-per-cm.net/ Retired data scientist and statistician. Now working projects in quantitative ecology and, specifically, phenology of Bryophyta and technical methods for their study.
This entry was posted in American Association for the Advancement of Science, an ignorant American public, an uncaring American public, Anthropocene, atmosphere, being carbon dioxide, bridge to somewhere, carbon dioxide, carbon dioxide capture, carbon dioxide sequestration, clear air capture of carbon dioxide, climate, climate disruption, climate economics, emissions, Glen Peters, Global Carbon Project, global warming, greenhouse gases, Hyper Anthropocene, Kevin Anderson, rationality, reasonableness, risk, science, Science magazine, Stephen Chu, sustainability, The Demon Haunted World, the tragedy of our present civilization, zero carbon. Bookmark the permalink.

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