Are trade wind clouds more effective solitary or in groups? 

Trade wind clouds are small cumulus clouds that rarely reach a height of more than four kilometer but cover large parts of the tropical oceans. Because they reflect the sunlight and effectively emit longwave radiation into space, they play an important role in cooling our planet. Thanks to a large measurement campaign, we can now better understand how effectively these clouds form precipitation and how precipitation processes shape their sensitivity to a forcing, such as a warming climate.