More than a trillion new measurements of Earth’s height – blanketing everything from glaciers in Greenland, to mangrove forests in Florida, to sea ice surrounding Antarctica – are now available to the public. With millions more observations added each day, data from NASA’s Ice, Cloud and land Elevation Satellite-2 is providing a precise global portrait of elevation and will allow scientists to track even the slightest changes in the planet’s polar regions. This satellite is all sow used to track cracking ice.
ICESat-2 will be able to measure the shift in annual elevation across the ice sheet to within a fraction of an inch. To do this, the satellite uses a laser altimeter – an instrument that times how long it takes light to travel to Earth’s surface and back. With that time – along with the knowledge of where in space ICESat-2 is, and where on Earth the laser is pointing – computer programs create a height data point. The data is originally processed at NASA Goddard, then turned into advanced data products that researchers will be able to use to study elevations across the globe.
ICESat-2 data products are now available for free from the National Snow and Ice Data Center at https://nsidc.org/data/icesat-2.
Thanks Pol for the post!!
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