You will notice the title of the article doesn’t say that the hurricane was caused by Climate Change. However, increasing climate variables may have been made worse and may have been part of the cause for such a disastrous storm that just would not leave the area.
Here’s some perspective in an article which cites several scientists about the issue:
Long term, the sea surface temperature of that region has risen about 1 degree over the past few decades—from roughly 86 to 87 degrees Fahrenheit, according to Michael Mann, a climatologist at Penn State. Mann said in a Facebook post on Monday that a relationship known as the Clausius-Clapeyron equation tells us there is a roughly 3 percent increase in average atmospheric moisture content for each 0.5 degrees Celsius of warming—almost 1 degree Fahrenheit. That means 3 to 5 percent more moisture in the atmosphere in the Gulf region near the south Texas coast. So Harvey has a big tank of tropical moisture that it has been dumping on land.
I”ll leave the rest of the perspective up to you, but scientific evidence continues to increase about how the future effects of storms like this one.