Things are going to get much, much worse than this.
Said chapter is available from the publishers here: https://www.orbitbooks.net/orbit-excerpts/the-ministry-for-t...
A bit like citing Paul Ehlrich's hypothetical predictions of massive famines in the world of his future.. Oh but wait, they all turned out to be completely false.
Global albedo modification happens today its just not very directed (eg. pitch black tarmac next to concrete sidewalk there is significant difference in temperature on sunny days, AC bills would be probably bit cheaper we didn't have tarmac).
We're most likely utterly fucked whatever we do unless we go back to live like pre industrial revolution humans