Great news! The greatest engineering project of mankind is nearing completion. Soon we will have warmed the Earth enough to get rid of all these annoying ice sheets and other frozen areas. The final line is visible.
If we all work together over the next thousand years, we will finally achieve our goal!
NASA tracks our progress and, in a recent press release, reaffirms optimists' thinking. quiet for yourself for a while. With our current global carbon footprint, significant parts of the planet will be free of ice in a millennium with a rapid picture.
Not only that, but the parallel efforts of humankind to raise sea levels seem really good. According to a computer model in a new study, only 200 years of melting at present could contribute from 0.48 to 1
This is fantastic news for the project, because these figures are at least 80% higher than previous estimates, which only predict an increase in sea level to 35 inches from Greenland's melting ice.
If this sounds too good to be true, and makes you question the methods behind this new study, read.
The team of researchers behind this new study is from the Geophysical Institute at the University of Alaska Fairbanks. Leading author is Andy Ashvanden, a research scientist at the Institute.
The team was running its computer model 1500 times, up to 3000 years. There were three sets of 500 simulations for different climate scenarios. In each scenario, the parameters are adjusted for key land, ice, ocean and atmosphere variables. The result is largely dependent on human emissions.
The most optimistic scenario shows that if humanity can just stay for another thousand years at our current emission levels, the unpleasant ice sheet in Greenland will disappear forever. But we can not rest; there is a lot of work for us.
If annoying environmentalists make their way and our emissions stabilize by the end of this century, then ice loss will fall to 26-57% of the total mass by 3000. Even worse is the scenario where we drastically reduce our emissions and they begin to decline by the end of this century. Then we will lose only between 8 and 25 percent of Greenland's ice and this will mean raising the sea level to only 1.8 meters (six feet). Nobody wants this. The data behind the survey largely came from NSAA's specialized naval operation fleet. This fleet documents the changing nature of the polar regions of the Earth, filling the gap between observations between the end of ICESat in 2010 and the beginning of its successor ICESat 2.
There is a reason why an unspoiled Greenland remains only a beautiful dream for so long. This is because it is high enough to create your own time. Reaching an altitude of more than 10,000 feet, the ice cover is like a mountain that stands out so high in the atmosphere that it affects the weather. Each year it generates almost enough snowfall to replace ice-melt-lost ice.
But he can not keep himself forever. Inevitably, as long as we continue to emit enough greenhouse gases, the interior of the ice sheet will shrink and the snow will decrease. After all, there will not be enough snowfall to fill the leaves, and victory will be at hand.
"In the warmer climate, glaciers have lost areas where more snow falls than melts in the summer. where new ice is formed, "said Mark Fanestock, professor of research at the Geophysical Institute and the second author of the study. "They are like chunks of ice in an open cooler that melts, and no one puts more ice in the cooler."
"If we continue as usual, Greenland will melt," said lead author Andy Ashwadden. , "What we are currently doing in terms of emissions in the near future will have a major long-term impact on Greenland's ice sheet, and then, if it melts, to the sea level and human society." Without NASA and programs like Operation IceBridge we will work in the dark. We will never know how close we are to the end of the project. Fortunately, keen scientists keep an eye on the ice.
NASA's Space and Air Campaigns, such as IceBridge, have fundamentally changed our ability to try to make a model to mimic the changes in the ice sheet, "said Pannestock. "The technology that allows a better display of the glacier is like a better pair of glasses, which allows us to see more clearly. Only NASA had an airplane with the necessary tools and technologies and could go where we had to go. "
Scientists have done their part. They watch the melting ice sheet and prepare frequent progress reports. However, some people feel abandoned.
Some people feel discouraged by climate change. They think they can not have a positive effect as an individual. But this is not true. There are many things you can do!
Here are some suggestions:
- Buy a huge pickup truck and ride it on meaningless, purposeless trips like taking your milk.
- Drive to distant stores even when there is
- Buy a house much larger than you need, tear the insulation and double windows. Then run the heating system with open doors and windows.
- Lobby your political representatives for more pipelines.
There are many more things you can do, but that's enough to get started.
The study is entitled "Contribution of the Greenland Ice Sheet to Sea Level in the Next Millennium" and was published in Science Advances.