Global warming is occurring to some degree, but that is partly a normal occurrence and in part, due to the depletion of the rain forest, without replanting new trees. That is the biggest reason the ecosystem is getting a bit out of whack.
Well what I'm talking about is the Gulf of Mexico water temperatures:
Harvey went right up that dark red on the western side of the gulf.
The gulf water temperature is higher than it "should" be due to ocean warming over the last 40 years:
(Fun fact: 30x10^22 joules of energy could run your average hurricane for ~17 years straight)
Some of those joules are warming the gulf.
https://www.theatlantic.com/science...ate-change-intensify-hurricane-harvey/538158/
Warmer water from climate change causes more powerful hurricanes
Now when we look at natural forcings that maybe increasing global temperatures they show as roughly neutral.
Finally, while burning the rainforests contributes to warming the bulk is caused by fossil fuels. CO2 from burning vegetation has a bit of radioactive Carbon 14 in it while fossil fuels are so old they do not. When you take the ratio of CO2 with C14 to that without it shows the bulk of CO2 is from fossil fuels as is the warming it causes.
This is the second storm (Allison was the first), in 16 years to sit and dump massive amounts of rain on Houston. City planners and managers need to start taking these excessively powerful storms into account because they will become somewhat more common.