In other words, if it continues, the recent trend in sea ice loss may triple overall Arctic warming, causing large emissions in carbon dioxide and methane from the tundra this century (for a review of recent literature on the tundra, see "Science stunner: Vast East Siberian Arctic Shelf methane stores destabilizing and venting; NSF issues world a wake-up call: "Release of even a fraction of the methane stored in the shelf could trigger abrupt climate warming"). Indeed, Lawrence himself said, "Our study suggests that, if sea-ice continues to contract rapidly over the next several years, Arctic land warming and permafrost thaw are likely to accelerate."