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Ice-free period too long for Southern and Western Hudson Bay polar bear populations if global warming exceeds 1.6 to 2.6 °C

Earth Sciences

Ice-free period too long for Southern and Western Hudson Bay polar bear populations if global warming exceeds 1.6 to 2.6 °C

J. Stroeve, A. Crawford, et al.

Discover how Hudson Bay's warming climate is impacting polar bear hunting and survival, extending the ice-free period with dire consequences. Researchers, including Julienne Stroeve and Ian Stirling, reveal alarming projections that could lead to species extirpation if global temperatures exceed 1.6-2.6°C, while holding at 2°C may provide respite for adult polar bears as recruitment struggles against the longer ice-free seasons.

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Playback language: English
Abstract
Hudson Bay's warming climate has extended the ice-free period, impacting polar bear hunting and survival. CMIP6 projections reveal alarming consequences if global warming exceeds 1.6-2.6°C, potentially leading to extirpation, despite limiting warming to 2°C offering some hope for adult survival. Recruitment is already negatively affected by the longer ice-free periods.
Publisher
Communications Earth & Environment
Published On
Jun 13, 2024
Authors
Julienne Stroeve, Alex Crawford, Steve Ferguson, Ian Stirling, Louise Archer, Geoffrey York, David Babb, Robbie Mallett
Tags
polar bears
climate change
Hudson Bay
ice-free period
global warming
species survival
CMIP6 projections

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