You really can’t go home again: An update of “Getting back to 350 ppm CO2 …”

I have made an important update to an earlier post here, Getting back to 350 ppm CO2: You can’t go home again.

The message, essentially based upon recent work Tokarska and Zickfield on one hand, and by The Global Carbon Project on the other make the calculation of geoengineering through clear air capture of CO2 far more pessimistic than even the whopping cost numbers were before. (Thanks to Glen Peters for pointing me to the annual budget of Carbon compiled by the Global Carbon Project.)


See the post, but, in short, I forgot to account for CO2 “dissolved” in oceans and terrestrial ecosystems which will come back into atmosphere in order to restore pCO2 equilibrium once atmospheric concentrations are reduced.

You really can’t go home again ….

This all also reminds me of something I have written before. Forget the monuments, and the civilization, and the going to the Moon or Mars, and the libraries. In the long run, humanity’s legacy to Earth and the Universe will be the Carbon Dioxide we are emitting into the climate system. No other single action we can imagine doing in the foreseeable future will have such a widespread or a long-lasting impact. Right now, we are Carbon Dioxide.

About ecoquant

See 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, Anthropocene, bridge to nowhere, Buckminster Fuller, Carbon Cycle, carbon dioxide, carbon dioxide capture, Carbon Worshipers, clear air capture of carbon dioxide, climate, climate business, climate change, climate data, climate disruption, climate economics, David Archer, diffusion, diffusion processes, ecological services, Eli Rabett, engineering, environment, fossil fuel divestment, fossil fuel infrastructure, fossil fuels, games of chance, geoengineering, geophysics, Glen Peters, Global Carbon Project, global warming, greenhouse gases, Hyper Anthropocene, Principles of Planetary Climate, Ray Pierrehumbert, science, Spaceship Earth, Susan Solomon, Svante Arrhenius, the tragedy of our present civilization, Tokarska and Zickfield, Wordpress, zero carbon. Bookmark the permalink.

3 Responses to You really can’t go home again: An update of “Getting back to 350 ppm CO2 …”

  1. Pingback: “… [A] new scientific paper overstates forests’ potential” (Reynolds) | Hypergeometric

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

  3. Pingback: tripleplus ungood: Long run hot climate models are also the most accurate reproducing today and recent past | Hypergeometric

Leave a reply. Commenting standards are described in the About section linked from banner.

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.