After Scorching Europe, Heat Wave Is Poised to Melt Greenland
A heat wave that shattered records in Europe this week is on the move, and it could melt billions of tons of ice in Greenland.
Hot air that originated over Northern Africa recently brought blistering heat to Europe, Paris sizzled at a staggering 108.7 degrees Fahrenheit (42.6 degrees Celsius), and temperature records were broken across the continent by up to 6 degrees F (3 degrees C).
A representative of the World Meteorological Organization (WMO) announced that atmospheric flow would carry this scorching heat to Greenland, which lost over 170 billion tons (160 billion metric tons) of ice in July and 80 billion tons (72 billion metric tons) of ice in June from surface melting alone. When this warm air arrives in Greenland, it will likely cause “another major peak in melt area.
The first nationwide study of U.S. groundwater wells shows that they are being dug deeper and deeper to supply the country’s expanding freshwater needs.
But scientists caution that the practice is not sustainable because groundwater supplies are dropping in many of the major aquifers that supply fresh water to more than 120 million people and half of U.S. farming irrigation.
Writing in the journal Nature Sustainability, researchers from the University of California, Santa Barbara caution that deeper wells may eventually tap into saltier water, requiring desalination. The U.S. Geological Survey says that between 1950 and 2015, aquifer levels have dropped by about 10 feet on average.