According to the British Daily Mail, researchers at Washington University examined data from two lasers that were able to make the most accurate measurements of ice sheets to date.
The results showed that in Antarctica, sea level rise is driven by the loss of floating ice shelves that melt in a warm ocean, preventing the flow of ice from land to the ocean, and the Antarctic ice sheet lost 118 gigatons of ice on average, while Greenland lost An average of 200 gigatons of ice a year.
While one gigaton of ice is enough to fill 400,000 Olympic-sized swimming pools, the results come from the ICESat-2 satellite, launched into orbit in the fall of 2018.
The team in charge of the study compared recent ICESat-2 data to the previous measurements taken between 2003 and 2009, where lead researcher Benjamin Smith said, “If you see an ice sheet or ice sheet for a month or a year, you will not learn much about what the climate is doing with it.”
“We now have a 16-year period between ICESat and ICESat-2, and we can be more confident that the changes we see in the ice are related to long-term changes in climate,” said Smith, an ice scientist at Washington University.
He added, “We are seeing high quality measurements of each ice sheet, allowing us to make a detailed and accurate comparison with ICESat data.”
Previous studies of ice loss or acquisition often analyze data from many satellites and airborne missions, but the new study takes only one type of measurement.
But it takes the height as measured by a tool that bounces off the laser pulses on the surface of the ice, providing the most detailed and accurate picture of the ice cap change.