Because an enhanced GH effect is a form of added insulation, it would affect the poles- at night disproportionately. this is not controversial. So there would be less temp contrast globally. Storms, most violent weather is caused by a contrast of hot AND cold air masses colliding. which is why they are most energized in spring. less contrast= less energized storms
Consider Venus- >98% CO2- 700 degree temps- so runaway greenhouse and boiling temps- and hardly a breath of wind at the surface. Because there is hardly any temp differential between the poles and equator- where would the wind come from?
So too on Earth, the effect albeit negligible, would be slightly more stable, predictable, boring weather. This is not really controversial scientifically- it just doesn't make a very good Hollywood movie or political threat to scare school kids with
So, so.... incorrect.
"When Venus Express arrived at the planet in 2006, average cloud-top wind speeds between latitudes 50º on either side of the equator were clocked at roughly 300 km/h. The results of two separate studies have revealed that these already remarkably rapid winds are becoming even faster, increasing to 400 km/h over the course of the mission.
“This is an enormous increase in the already high wind speeds known in the atmosphere. Such a large variation has never before been observed on Venus, and we do not yet understand why this occurred,” says Igor Khatuntsev from the Space Research Institute in Moscow and lead author of the Russian-led paper to be published in the journal
Icarus..."
“Our analysis of cloud motions at low latitudes in the southern hemisphere showed that over the six years of study the velocity of the winds changed by up 70 km/h over a time scale of 255 Earth days – slightly longer than a year on Venus,” says Toru Kouyama from the Information Technology Research Institute in Ibaraki, Japan.
The two teams also saw dramatic variations in the average wind speeds between consecutive orbits of Venus Express around the planet.
In some cases, wind speeds at low latitudes varied such that clouds completed one journey around the planet in 3.9 days, while on other occasions they took 5.3 days.
Scientists currently have no explanation for either of these variations, or for the long-term overall increase in wind speeds."
http://www.esa.int/Our_Activities/S...ss/The_fast_winds_of_Venus_are_getting_faster
Also, it was thought the poles had two giant hurricanes on both poles because that was once observed. It's came out that even these hurricanes change shape and size over time...
And also:
"The Magellan probe that orbited Venus from 1990 to 1994 was able to peer through the thick Venusian clouds and build up the above image by emitting and re-detecting cloud-penetrating radar. Visible as the bright patch below central North is Venus' highest mountain Maxwell Montes. Other notable features include numerous mountains, coronas, impact craters, tessera, ridges, and lava flows. Although the size and mass of Venus are similar to the Earth, its thick carbon-dioxide atmosphere has trapped heat so efficiently that surface temperature usually exceeds 700 kelvins, hot enough to melt lead."