The cited source https://insideclimatenews.org/news/21102016/melting-ice-glaciers-sea-level-rise-underestimated-study-Greenland https://insideclimatenews.org/ne

The cited source https://insideclimatenews.org/news/21102016/melting-ice-glaciers-sea-level-rise-underestimated-study-Greenland https://insideclimatenews.org/news/21102016/melting-ice-glac... makes it clear it means ice above land, such as Greenland. It also doesn't use the phrase "sea ice" which seems a confusing phrase.