Roy Spencer on Hansen’s  excuses  hypotheses

Understanding James Hansen’s View of Our Climate Future

I’ve been wading through James Hansen’s recent 52-page unpublished paper explaining why he thinks the cooling effect of manmade sulfate aerosols has been underestimated by climate modelers.

This is the same theme as the “cooling from Chinese pollution is canceling out carbon dioxide warming” you might have heard about recently. (Roy W. Spencer)

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