氣候變遷添異相 南極大陸現「血雪」
（Image From：flickr_Pacific Southwest Forest Service, USDA）
烏克蘭的科學家於 2020 年 2 月在南極研究站舉報了一種異常的現象。
Ukrainian scientists at an Antarctic research station reported a strange phenomenon in February 2020.
在高溫時期，雪地中出現了紅色區塊，這鮮紅的顏色起因於極地雪藻，一種生存在結冰水中的藻類物種。
During this time of high temperatures, red areas appeared in the snow. The red color is due to Chlamydomonas nivalis（極地雪藻）. It's a species of algae that lives in freezing water.
在溫暖的溫度中，南極的雪和冰會融化，而這種藻類則會繁衍。
In warm temperatures, the Antarctic snow and ice melt, and the algae bloom.
「血雪」又被稱作「西瓜雪」，導致氣候變遷。
“Blood snow,” which is also called “watermelon snow,” contributes to climate change.
因為這種雪是紅色的，它反射較少的光線也融化地更快。
Because of its red color, the snow reflects less light and melts faster.
因此，愈來愈多的藻類繁衍，然後吸收更多的熱能，這使得更多藻類蔓延，更多的冰因而融化。
As a consequence, more and more algae bloom and absorb more heat. This allows more algae to spread. Therefore, more ice melts.
極地雪藻存在了數百萬年之久。
Chlamydomonas nivalis has existed for millions of years.
然而，因為地球溫度正在上升，它正快速地蔓延中。
However, it's spreading rapidly now because Earth's temperatures are increasing.
人類行為造成的氣候變遷對此現象難辭其咎。
Climate change from human actions shares the blame for this phenomenon.