OMG… Greenland’s ice sheets are melting fast
An urgent attempt to study the rate at which Greenland’s mighty ice sheets are melting has been launched by Nasa. The aim of the six-year project, called
Oceans Melting Greenland (OMG), is to understand how fast the world’s warming seas are now eroding the edges of the island’s vast icecaps. Warming air temperatures are already causing considerable glacier loss there, but the factors involving the sea that laps the bases of its great ice masses, and which is also heating up, are less well understood.
Greenland contains vast reservoirs of ice which, if completely melted, would raise world sea levels by more than six metres. However, some influences on its current dramatic melting are poorly understood. Hence the decision to launch OMG, an acronym that the project leader, Joshua Willis, admits he “barely squeezed past the censors”.
The project will include a four-year programme involving the release of more than 200 robot probes from aircraft of the US National Aeronautics and Space Administration’s specialist fleet. These will measure sea water temperature and depth round the island while the elevation of its coastal glaciers will also be measured in detail. At the same time, ships, including the retired trawler MV Cape Race, will be used to make careful studies of the shape and size of the fjords that channel water from the ocean to the base of Greenland’s glaciers. The information gleaned this way “should give us a better handle on understanding the [ice] mass loss that is currently going on in Greenland,” says Willis, of Nasa’s Jet Propulsion Laboratory.
Going to be some interesting information gathered.