Cloud brightening is just one method of geoengineering, but may come with risks to the planet. This would make clouds over the sea brighter, a process known as marine cloud brightening. The simulation suggested that targeted marine cloud brightening would indeed counter its effects, becoming more effective the earlier in the El Niño event it was introduced. According to the data collected, marine cloud brightening could increase the cooling and drying effects associated with La Niña by more than 40 per cent. However, there is much controversy around the use of geoengineering to intervene with natural phenomena such as Super El Niños.