Carbon dioxide emissions embodied in international trade: Ken Caldeira

Ken Caldeira, staff scientist at the Carnegie Institution of Science's Dept. of Global Ecology, discusses:

Caldeira, K., and S. J. Davis (2011), Accounting for carbon dioxide emissions: A matter of time, PNAS,

http://dge.stanford.edu/labs/caldeiralab/Caldeira_research/Davis_Caldeira3.html
http://carnegie.stanford.edu/

Category:

Science & Technology

Tags:

• energy
• global
• change
• climate
• gas
• warming

[stabg289]

New research shows oxygen depletion in the atmosphere accelerating since 2003, coinciding with the biofuels boom; climate policies that focus exclusively on carbon sequestration could be disastrous for all oxygen-breathing organisms including humans

[treasurecoastsky]

I am in S Florida south of Cape Canaveral Ken and have been witnessing geo-engineering experiments since Janauary 2 2011 , When will they stop Ken ? What are the Ill effects ?

[treasurecoastsky]

Recent analysis suggests that the effectiveness of stratospheric aerosol climate engineering through emission of non-condensable vapors such as SO2 is limited because the slow conversion to H2SO4 tends to produce aerosol particles that are too large; SO2 injection may be so inefficient that it is difficult to counteract the radiative forcing due to a CO2 doubling.

[treasurecoastsky]

Here we describe an alternate method in which aerosol is formed rapidly in the plume following injection of H2SO4, a condensable vapor, from an aircraft.

[treasurecoastsky]

This method gives better control of particle size and can produce larger radiative forcing with lower sulfur loadings than SO2 injection. Relative to SO2 injection, it may reduce some of the adverse effects of geoengineering such as radiative heating of the lower stratosphere. This method does not, however, alter the fact that such a geoengineered radiative forcing can, at best, only partially compensate for the climate changes produced by CO2.