Is there some quantitative measure (eg something that can be put into
a nice colourful map) to show that even in the summer in the UK flood
risk has risen / will rise due to climate change?
I can easily understand that warm air holds a great deal more moisture
than cold air, as a chemical engineer I know my steam tables well
enough, but air in summer or near the equator is warmer than in winter
or in Canada, and that doesn't seem to correlate much with flood risk.
If there's no straightforward explanation why a global increase in
temperature should yield more flooding risk everywhere, even in places
it'll get drier, that's fine, I can accept that that might be so and
that I can't easily follow the way people have worked that out. But I
would like some clear evidence it has been worked out properly, and
that eg snow melt and frozen ground have been considered as factors
(which I gather were major factors in the floods of 1947 in the UK and
presumably would improve with milder winters).
At the moment, it just has this feel to me that people think of
tropical downpours and extrapolate that to more flooding without
really having considered the flooding issue properly.
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