Thanks to all
who have provided many useful comments on the first 18 chapters of
Sophie’s Planet. In cases where substantial corrections or changes
ensued, I replaced the chapter on my website, labeled with the new
date. The current first 18 chapters are available as a set here, but there will no doubt be additional changes and edits. The biggest changes are:
Eunice Foote: I was entirely unaware of the story of
this remarkable amateur scientist, which suggests how isolated I have
been while finishing this book. It seems that there were widespread
newspaper reports, but all of them that I have now seen butcher the
science badly. I have added half a page – more than a page, including
footnotes – but no photo of her is available.
Bert Bolin: Ralph Keeling pointed out the paper by
Bolin and Eriksson in the Rossby volume. Their paper explains the
curious statement in the abstract of the famous Revelle and Suess paper;
it seems Revelle and Suess did not initially appreciate the full
significance of the buffering effect that they reported. When the ocean
is treated as two layers, the upper 100 meter mixed layer and the
deeper ocean, the long delay for human emissions of CO2 to enter the ocean becomes clear.
Ozone: the brief introductory comments on ozone in
Chapter 12 were too brief for proper credit, so that has been slightly
expanded, with photos.
Greenhouse effect: many had trouble with my explanation, so I tried again in Chapter 10.
http://www.columbia.edu/~jeh1/SophiePlanet/Planet.Chapters1-18.pdf
I recently opened a Twitter account @DrJamesEHansen, (https://twitter.com/drjamesehansen).
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