Is the Green House Effect creating more frequent El Niños or not?

Once again: The sun is warming up the Earth, the Earth is warming up the atmosphere.

Climate research mean that the increasing concentration of CO2 prevents the heat radiation from leaving Earth which results in an increased temperature in the atmosphere.

The Greenhouse effect provides a warmer atmosphere. The warmer atmosphere, air heated by the Earth, would not rise as fast then it would through an atmosphere with normal temperature? This in turn could make the Walker circulation weaker and thus the Trade winds. The hot water that normally runs westwards would have easier to run back east. The risk of more frequent El Niños would be clear!?

Is it instead that the sun heats up the land and water more then normal? The water is heated by the sun and the “mountain of warm water in the west would be too big and physically start to move eastwards? This could perhaps also disturb the Walker circulation to the east. Then the creation of more frequent El Niños, is more about the sun’s ability to increase the water temperature and physical phenomena creating the El Niño rather than a warmer atmosphere?

Nevertheless, the increased amount of CO2 in our atmosphere is only one very critical effect of human activity. All the other effects humans have on fresh water, deforestation, air pollution in general are all very critical and needs to be addressed. The focus on Global warming helps making people aware of all these questions, and that is maybe the most important when we discuss CO2?