David
“There is no good model for how a rise in temperatures affects claims.”
No need to get down in the weeds-wouldn’t a reasonable underwriter predict a rise in the loss ratio, which would feed through to premiums?
See para in link below about impact of melting polar ice on the North American jet stream:
http://www.scientificamerican.com/article.cfm?id=arctic-sea-ice-loss-implications&WT.mc_id=SA_CAT_ENGYSUS_20120927
