A Pink Glacier In Italy Is Not Good News
In Italy, the Presena glacier is turning pink due to algae, and this will make the ice melt even faster. Blagio di Mauro from the Institute of Polar Sciences at Italy’s National Research Council told CNN that pink snow has appeared on the glacier. It’s sometimes known as watermelon snow and is fairly common in the Alps during the spring and summer. However, it’s been more present this year.
Di Mauro believes that the alga named Chlamydomonas nivalis is the culprit that changed the color of the snow. He explained to CNN that this spring and summer saw low snowfall and high atmospheric temperatures. “This creates the perfect environment for the algae to grow,” he said. This bodes ill for the health of the glacier because darker snow absorbs more energy and this makes it melt faster. “It is sure bad for the glacier,” Di Mauro said.
He also told Science Alert, “Everything that darkens the snow causes it to melt because it accelerates the absorption of radiation. We are trying to quantify the effect of other phenomena besides the human one on the overheating of the Earth.”
Di Mauro has also studied the Morteratsch glacier in Switzerland where an alga turned the ice purple. It’s also been found in Greenland, the Andes, and the Himalayas. Just last year, record melting in the Swiss alps saw glaciers shrink 10% in five years, which is a rate that hasn’t been seen before in a century of observations. Last summer’s heatwave was the source of these record-breaking glacier melts, and 2020 has already proven to be even hotter. We’ve had heatwaves in Antarctica in which temperatures reached the 70s, and this summer, it’s sometimes been hotter in the Arctic than it has been in south Louisiana!
