quinta-feira, 20 de junho de 2019

Hungry polar bear wanders major Russian town as wildfires rage across Ar...




A visibly exhausted and starving polar bear wandered into a major Russian industrial city on Tuesday, hundreds of kilometres away from its natural habitat, as widespread wildfires rage across the Arctic Circle.

Footage released on Tuesday by Oleg Krashevsky, a local wildlife expert, showed an emaciated polar bear in Norilsk, an industrial city in Siberia, located above the Arctic Circle.

It is the first polar bear seen in the city in more than 40 years, according to local environmentalists.

Polar bears have increasingly been spotted far away from their natural sea-ice habitats as climate change pushes them further afield for food.

A polar bear was flown back to the northern arctic region of Chukotka in April by Russian authorities after it was found in a village around 700km away. Two months earlier, a Russian archipelago asked for help to tackle "a mass invasion of polar bears into inhabited areas."

Using satellite imagery we can easily observe how the polar bears' natural habitat -the sea ice of the Arctic Ocean- is dispersed into small ice floes. "Of course when the sea ice breaks up, the polar bears will seek stable ice on which they can hunt. However, if there are no seals or other food sources, then forced to keep searching" ESA Earth programme's head Mark Drinkwater told euronews.

EU, contains modified Copernicus Sentinel data 2019 processed with EO Browser
The Kara sea, north of Norilsk, on June 17EU, contains modified Copernicus Sentinel data 2019 processed with EO Browser
Climate science expert Zackary Labe helped us understand the picture "The blue areas on the Sentinel-2 satellite images are showing areas of melt ponds on-top of the sea ice. Melt ponds form during the summer months as snow/ice begins to melt on the top layer of the sea ice. In the case of this satellite image, it looks likely that the sea ice is beginning to substantially melt.

Temperatures have been well above average in parts of northern Siberia this month, which has contributed to a rapid melt of snow cover and sea ice along the Siberian side of the Arctic Ocean. This is especially noticeable in the Laptev Sea" he tells euronews.




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