In this world, that rotates in the same direction and at the same rate as Earth, where the land platforms that cover around 10-20% of the world's surface is (magically) suspended at the 1 ATM level, 25km above a sea at which the atmospheric pressure is over 19 ATM, where the world's diameter is 22,282km, the gravity is 1g, and the scale height is equivalent to Earth's, about 8.5km. The solar energy received is sufficient to make the land at the 25km altitude have a temperature of about 15°C on average, with a sea-level temperature of around 130°C (below boiling point thanks to the atmospheric pressure).
The world's real surface is entirely covered in water, over which is a thick layer of low clouds, about 5km from the surface. There are also clouds above the ~25km platform altitude. The troposphere is 35-45 km high.
The platforms range in thickness from 1km to 10km, and are like entire continents floating in the air, with mountains on top and also beneath. They range from several hundred kilometres across to 10,000 km across.
Is it reasonable that the atmospheric circulation experienced by those dwelling upon those platforms would be the top of the cells, rather than the bottom, thus reversing the direction of the prevailing winds?