Greenland lost a record amount of ice during an extra warm 2019, with the melt massive enough to cover California in more than four feet of water, a new study said.

After two years when summer ice melt had been minimal, last summer shattered all records with 586 billion tons of ice melting, according to satellite measurements.

That’s far more than the yearly average loss of 259 billion tons since 2003 and easily surpasses the old record of 511 billion tons in 2012, said a study in Communications Earth & Environment.