Cause and contributing to are two different things. If you had a grasp of the language you might understand that but it apparently is a hopeless cause.
cause - a person or thing that gives rise to an action, phenomenon, or condition.
contribute - help to cause or bring about.
Seems like you need to go back to school to learn how human activities contribute to help cause hurricanes and makes them worse.
Man has exacerbated the situation (i.e. "hurricanes...have gotten stronger....")
So hurricanes have not increased in frequency, just intensity? We should see more CAT 5 hurricanes and the same number of storms overall?
“There’s never an ideal time to talk about how climate change is magnifying some of these natural disasters,” says Michael Mann.
Mann and other climate scientists say that climate change has
intensified these storms so much that we need a new set of guideposts.
Predictions we could’ve made in the past are no longer accurate, and the rules that used to help us plan for events like Harvey no longer apply.
There’s very little doubt among scientists that climate change has
ratcheted up the potential intensity of hurricanes and other large storms, Mann says.
The contrast between warm temperatures at the surface of the ocean and cold temperatures at different layers in the atmosphere
determine the intensity of hurricanes, he says.
To understand how that happens, we can think of hurricanes as “heat engines.” At the
start of a hurricane,
warm air near the surface of the ocean rises, leaving a pocket of lower pressure air below. Other air from surrounding areas fills that pocket,
and in turn warms and rises. As this cycle continues, “new” air swirls as it replaces the air that rises from the pocket. Meanwhile,
the warm, moist air in the sky then forms a system of clouds, which spins and grows like an engine feeding off heat.
The contrast in surface and aloft temperatures drives that engine, and, thanks to global warming, surface temperatures are rising significantly. “It’s making those heat engines more efficient,” says Mann. And
with more efficient heat engines come more intense storms.
“The old rules don’t apply anymore,” said Mann. “We’re no longer talking about chance alone. We’ve loaded the dice. We’ve loaded the weather dice
by warming the planet and intensifying these storms."
“We’re going to continue, in principle, to
see worse and worse events of this sort,” says Mann. “
Stronger storms producing even greater amounts of rainfall if we
continue to warm the planet and warm the oceans. So, needless to say, the only thing that’s going to stop that cycle is acting on climate change and moving away from fossil fuels and towards renewable energy.”
https://www.sciencefriday.com/segments/hurricane-harvey-and-the-new-normal/
