Monthly Archives: June 2024

Arctic sea ice at the summer solstice: more polar bear habitat than 2022 after hottest year on record

We are just into the 2024 sea ice melt season in the Arctic with no signs of any big, dramatic changes despite claims that 2023 was the warmest year on record (since 1850). There is still abundant sea ice habitat for polar bears ahead of the summer months (July-September) when Arctic ice melts back considerably.

Polar bears in Western Hudson Bay are still on the ice despite vast open water levels normally signaling “breakup” has happened: the wind-driven ice is packed tight against the western shore and the bears are still on it.

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New Hudson Bay sea ice modelling paper is more utterly useless fearmongering about polar bears

A new collaboration by sea ice and polar bear specialists that predicts a catastrophic future for polar bears in Hudson Bay (Stroeve et al. 2024) can be dismissed as yet another bit of utterly useless fearmongering for two reasons: 1) it’s a model projection that uses widely discredited SSP5-8.5 “business as usual” climate scenarios for its predictions; and 2) it’s based on the false premise that Western and Southern Hudson Bay polar bears have already suffered harm from reduced sea ice blamed on fossil fuel-caused global warming.

The fact that recently-deceased Ian Stirling was a prominent co-author should come as no surprise: his irrational promotion of the idea that future “climate warming” could doom polar bears to near-extinction – even after recording and publishing evidence to the contrary – will go down in history as an appalling violation of scientific principles.

Adding to the dubious validity of the paper: lead author Julienne Stroeve’s 2007 paper predicting summer sea ice decline by 2050 was proven wrong by actual data by the time it was published (Stroeve et al. 2007, 2014) and a more recent update failed to foresee the recent 17-year stall in decline. And co-author Steve Ferguson, a seal biologists, rashly stated in 2016 that Hudson Bay could be ice-free in winter as early as 2021 [which, needless to say, never came close to fruition].

I’d say if Southern Hudson Bay polar bears might be extirpated as soon as 2030, as the paper’s co-author Alex Crawford suggests, the global temperature and ice melt had better get a move on: a survey showed the SH population was thriving in 2021 and Hudson Bay sea ice hasn’t hit any kind of death spiral in the three years since.

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Huge area of open water on Hudson Bay created by wind, not ice melt, NSIDC experts confirm

Sea ice experts at the US National Snow and Ice Data Center just confirmed my suspicion that the huge area of open water in eastern Hudson Bay during May this year was caused by winds, not ice melt. In other words, it’s a rare occurrence but not a sign of extra-early sea ice melt caused by global warming.

Money quote: “Unusual strong and persistent winds from the east caused the low extent.”

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New data show Svalbard polar bears are fatter than they were in 1993 despite continued low sea ice

Researchers at the Norwegian Polar Institute have finally updated their spring data, which show male polar bears in 2024 were even fatter than they were in 1993 and litter sizes of new cubs were just as high, despite continued low sea ice in the region over the summer months especially.

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