Sentences with phrase «prolonged warm spells»

He said if the dating holds up, it helps confirm the bears» ability to tolerate prolonged warm spells, but the pace of change now may still pose novel challenges.

Some polar bear specialists warn that the pace of projected human - driven warming could present greater challenges than prolonged warm spells of the past.

One warm and fuzzy note: an Icelandic team uncovered a polar bear jawbone from the Arctic's Svalbard archipelago that dated to more than 100,000 years ago, suggesting that the animals are capable of weathering prolonged warm spells.

Not exact matches

A Swiss - led group using tree - ring data to look at Central European summer climate patterns during roughly 2,500 years saw that periods of prolonged warming and of colder than usual spells coincided with social upheavals.