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A living carpet of microbes, dust and wind-blown soot is exacerbating ice melt as Arctic temperatures rise, and it's raising alarms about sea level rise.
In the high-stakes race against sea level rise, understanding what's causing the Greenland Ice Sheet to melt is critical. The problem isn't just rising temperatures: soot from ships, wildfires and distant power plants, as well as dust and a living carpet of microbes on the surface of the ice, are all speeding up the melting.
Right now, predictions for sea level rise range from about 1 to 10 feet by 2100—a wide difference for coastal communities trying to plan seawalls and other protective measures.
The more we understand about how pollutants affect the ice, the more accurate those projections will be. So, let's take a look at what's happening on the ice sheet now—and the risks ahead.
What Is Eating Away at the Greenland Ice Sheet? by Bob Berwyn, InsideClimate News, Apr 19, 2018
In his article, Here’s what happens when you tell people the scientific consensus on climate change (Think Progress), Joe Romm wrote:
A 2016 study by the authors of seven different consensus studies found that while the consensus varies slightly depending on which experts are surveyed, “most of our studies [found] 97 percent consensus among publishing climate scientists,” as lead author John Cook of Skeptical Science explained.
The link embedded above is to the Advanced version of the SkS rebuttal article, The 97% consensus on global warming.
In March, the Smithsonian Institution’s National Museum of Natural History held a three-day Earth’s Temperature History Symposium that brought teachers, journalists, researchers and the public together to enhance their understanding of paleoclimate. During an evening lecture, Gavin Schmidt, climate modeler and director of NASA’s Goddard Institute for Space Studies, and Richard Alley, a world-famous geologist at Pennsylvania State University, explained how scientists use Earth’s past climates to improve the climate models we use to predict our future.
Everything You Ever Wanted to Know About Earth’s Past Climates by Rachel E Gross, Smithsonian.com, Apr 16, 2018
Peter Cox' bio page and Quote source
High resolution JPEG (1024 pixels wide)
Posted by John Hartz on Sunday, 22 April, 2018
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