Global hurricane intensity not increasing…so concludes a just-published paper by University of Wisconsin atmospheric scientist Jim Kossin and colleagues. In order that we can’t be accused of misrepresenting the authors’ meaning, here is the complete conclusion section of their Geophysical Research Letters paper [we added emphasis just for fun –eds]:
The time-dependent differences between the UW/NCDC and JTWC best track records underscores the potential for data inconsistencies to introduce spurious (or spuriously large) upward trends in longer-term measures of hurricane activity. Using a homogeneous record, we were not able to corroborate the presence of upward trends in hurricane intensity over the past two decades in any basin other than the Atlantic. Since the Atlantic basin accounts for less than 15% of global hurricane activity, this result poses a challenge to hypotheses that directly relate globally increasing tropical SST to increases in long-term mean global hurricane intensity.