December 27th, 2016 11:55 EST
NASA Releases New, Detailed Greenland Glacier Data
As glaciers break off, melt and retreat, they generally speed up. That makes them stretch out and causes their top surfaces to drop lower. By observing how Greenland glaciers` heights change throughout the five-year OMG campaign, scientists will be able to infer how the volume of ice in the glaciers is changing.
The new survey was made with a NASA instrument called the GLacier and Ice Surface Topography INterferometer (GLISTIN-A), which produces very accurate maps of surface topography with high spatial resolution. Because the instrument is flown on an aircraft, it can survey far more of Greenland`s coastal glaciers than have previously been studied from ground level, with far more detail than is currently available in satellite observations.
In a new video, OMG principal investigator Josh Willis of NASA`s Jet Propulsion Laboratory, Pasadena, California, compares pre-OMG coverage of the Jakobshavn region of Greenland with coverage obtained by GLISTIN-A this spring.
The detailed scientific data from the OMG GLISTIN-A campaign are at:
OMG`s fall ocean probe data are also available at:
NASA collects data from space, air, land and sea to increase our understanding of our home planet, improve lives and safeguard our future. NASA develops new ways to observe and study Earth`s interconnected natural systems with long-term data records. The agency freely shares this unique knowledge and works with institutions around the world to gain new insights into how our planet is changing.
Photo Credit: Wikipedia