[McCoy 2015-07-03 - Natural aerosols explain seasonal and spatial patterns of Southern Ocean cloud albedo](zotero://select/items/1_U5EJWBS2) The Southern Ocean is the cloudiest region on Earth. Aerosol-cloud interaction is poorly understood, and the Southern Ocean is a unique laboratory for studying it. Aerosols from plankton are able to seed clouds, which in turn reflects sunlight, helping to cool the planet. Phytoplankton are the main source of omega-3 in the ocean.