Images from the NASA satellite
In the 1990s and 2000s, scientists managed to evaluate very well. To measure melted ice And more accurately today with modern tools like satellite Weather station and complex climate models
Recently, researchers at the University of California at the United States found that they had calculated the amount of ice lost in Greenland since 1972, the year the country's first satellite. Which is a satellite set of natural resources surveyed in orbit over the Earth to conquer the territory of Denmark The research team used 3 methods for measuring the melting of ice. The first is the use of a satellite to measure the laser altitude. If the glacier melts, the satellite will receive information about the reduced height. And measure the variance of gravity Including the development of table mass models And compare the accumulated mass of rain and snow and the lost mass of ice To calculate the remaining ice These models are confirmed by reliable measurements on the ground. There may be some differences, but only 5-7 percent compared to the last 20-30 years. The results of the study showed that the ice from the Greenland region melts 6 times faster in the last 30 years and believes that as a result, sea levels have increased by 13.7 mm since 1972.
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