Rivers of warm air transported across the atmosphere have been found to play a major role in the appearance of vast areas of open water in Antarctic sea ice
Source:
https://www.newscientist.com/article/2259556-rivers-of-air-in-the-sky-are-melting-huge-patches-of-antarctic-sea-ice/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home