Prompted by Hurricane Melissa  - what's the correlation of extreme hurricanes and AGW, and solar cycles? When looking strictly at Cat 5's - they  definitely seem to be getting more frequent over time, but also seem to correlate heavily with the solar cycles; specifically being more frequent during peaks of solar cycles, with perhaps some lag (more frequent on the "back side"). Here's list of Cat 5's by year: https://en.wikipedia.org/wiki/List_of_Category_5_Atlantic_hurricanes