With the advent of the industrial age, a large number of coal emissions, excessive felling of trees, and rapid population growth have led to more and more carbon dioxide, while fewer and fewer green plants can absorb carbon dioxide, resulting in more and more carbon dioxide accumulation, resulting in a continuous rise in global temperature, that is, global warming.
Greenland is the largest island in the world. Recently, researchers found that Greenland is affected by global warming, and the melting degree of ice sheets has exceeded? Critical value? That is, the annual snowfall of the supplementary ice sheet can't keep up with the melting speed of the ice sheet, which means that even if global warming stops, the ice sheet will continue to melt.
Data expansion
What is the melting of Greenland ice? 65438+February 1 1 A study on climate change published online by Nature shows that since 1992, the amount of ice in Greenland has decreased by 3.8 trillion tons, resulting in global sea level rise 10.6 mm. According to the author, the ice in Greenland has melted. What is the cause of ablation? It is because the altitude change of Greenland ice sheet causes the ice layer to melt. Altitude change of Greenland ice sheet since 1992. The results show that the glacier loss rate in Greenland has increased from 33 billion tons/year in 1990 to 254 billion tons/year in recent 10, and the loss rate has accelerated seven times in just 30 years. In addition, by analyzing the regional climate model, the research team found that half of the ice loss in Greenland is due to the melting of the surface caused by rising temperature, and the other half is due to the increase of glacier movement caused by rising ocean temperature. ? Recently, some researchers have found that the melting degree of Greenland ice sheet has exceeded due to the influence of climate warming. Critical point? This is irreversible. Even if global warming stops, the ice sheet will continue to shrink. Moreover, these melted ice will flow into the Atlantic Ocean and eventually into all the oceans in the world, accelerating the sea level rise. According to the USA-Today website 18, American scientists published a study in the latest issue of Earth and Environment Newsletter, saying that their latest research shows that the melting degree of Greenland ice sheet has exceeded? Critical point? It's irreversible now. Even if global warming stops now, snowfall can't make up for the lost ice. Ohio State University issued a statement saying: Greenland's glaciers have crossed a critical point in a sense. The critical point means that the annual snowfall to replenish the ice sheet can't keep up with the speed of melting ice from glaciers flowing into the ocean.