Hurricane season 2017 and the climate change

Two big questions came to my mind this September:
1. Is this hurricane season specially busy and more catastrophic than before?
2. Has the climate change something to do with it?
When I was flying to my holidays in the Caribbean, I was a bit scared for the recent news about the hurricane Irma, which was on its way to Florida at that time. I just couldn't believe another hurricane could come right after. And not one, but five hurricanes or big storms were active at the same time on Earth at that moment. 
The picture below shows exactly what I had to face when I was in the french island of Guadeloupe, and yes, Maria hit the island, and it was a (hopefully) once in a lifetime experience.
When the windspeed of a tropical storm reaches certain level a hurricane is formed.
The hurricane categories are also based on the windspeed.  See the stages of development from tropical depression to hurricane HERE.
The best way to have an overview of cyclones around the globe is in the National Hurricane Center website.
Now, I am looking for answers to those questions I had this summer. 
It seems that indeed this hurricane period has been just slightly more active than normal, although the main difference is that the amount of tropical storms that have evolved to hurricanes and the number of hurricanes that have reached high categories have increased. Moreover, climate change appears to be one of the main reasons this is happening.
You can find a good  summary by clicking on the image below.
Climate change is real, and we have devastating proofs of it.