Prof Curry might be helpful to identify some basics for those of us new to ‘hurricane climate science’. I got this from wikipedia FWIW. Be great to get any corrections:
1 The actual scientific topic is tropical cyclones of which a hurricane is just one type alongside, tropical storms, typhoons, cyclonic storms and cyclones.
2 Tropical cyclones are storm systems with low pressure centres i.e big wind and rain occuring over one of 6 ocean basins around the equator.
3 They love warm moist air coming off the oceans around the equatorish:
Northern Hemisphere: North Atlantic, NE Pacific, NW Pacific, North Indian,
Southern Hemisphere: SW Indian, Southern Pacific & Australian region
4 Tropical cyclones are rare in the Southern Atlantic, weirdly enough.
5 Number of tropical cyclones for the planet each year is around 87 + or – 10.
6 Pacific ocean has the most tropical cyclones (that’s north and south together) and within that ocean it’s the NW Pacific that most cops it. They get the super typhoons.
7 In the Northern hemisphere, tropical cyclones are called tropical storms, hurricanes, typhoons or, in the Northern Indian Ocean only, cyclonic storms.
8 In the Southern hemisphere tropical cyclones are just called tropical cyclones.
9 The Beaufort scale sets out wind speeds and duration over 1 and 10 minute periods, lowest speed for tropical storms and moving up into Cat 5 hurricane, supertyphoon, sever tropical cyclonic storm and cat 5 severe cyclone.
10 There’s another scale the Saffir-Simpson scale but it’s just for hurricanes in the NE Pacific and Northern Atlantic i.e US centric focus, not helpful globally.
11 Of the annual average 87 odd tropical cyclones that form each year around the planet, 47 are hurricanes/typhoons and around 20 are intense tropical cyclones leaving around 20 as just tropical storms, the slowest of all.
12 the tropical cyclone season runs July to Nov for North Atlantic, sameish for NE Pacific and all year round for the rest.
13 “ACE” stands for “Accumulated Cyclone Energy” and it comes to us from NOAA, the guys who gave us ‘2014 hottest year ever’. It only ‘measures’ the ‘energy’ of NE Pacific and North Atlantic hurricanes tropical storms so it’s not even a global measure. I guess in the absence of frequency of tropical cyclones and the absence of major losses caused by them (see Pickle Jnr), I guess intensity and ‘energy’ is all the climate alarmists have to fall back on.