Tag Archives: climate change

Bioscience paper and starving polar bear follow-up

Between the two stories (the attack by my colleagues and the starving polar bear hype), views at my blog have gone through the roof and one Arctic biologist speaks out on what SeaLegacy folks should have done when they saw a starving polar bear on Baffin Island this summer.

polar_bear_sow_two_cubs_feeding_with_gulls_Kaktovik_USGS

For the two weeks prior to the release of the Harvey paper (rounding to the nearest 100) the number of page views was 11,400 while for the two weeks since the Harvey et al. paper was released views were at 72,300 (with 14,900 views yesterday, 23,300 views the day before, and 12,500 the day before that). Prior to the Harvey et al. incident, my highest-ever one day blog view tally was 10,400 (a walrus haulout post!).

Several blogs were discussing the Harvey et al. paper and its implications from the first day (29 November) and a few have contacted me to say their blog views are way up as well. Terry Corcoran at the National Post wrote a supportive column, here.

So much for shutting down non-conforming opinion and criticism, especially mine. Now folks know exactly where to go for an unbiased take on polar bear issues.

One reader contacted me via my ‘contact me’ page and insisted he wanted to make a cash donation to support my blogging efforts:

“First, I apologize for adding to your (probably) overflowing inbox, but wanted to let you know that I have followed recent developments and applaud your response to these ignorant accusers.

I would be happy to assist you with monetary support in order to help defray any expenses you have incurred recently, or anticipate soon. If there is a method to do that, please let me know.

The stress and time away from your regular work is precisely what prompted me to contact you. To me this attack on your work is similar to a person that has had a fire in their home. Everything is put on hold while they tend to all of the mitigation, insurance response, etc. It takes time, energy and money.”

I wish I could have said “it’s not necessary” but he’s absolutely right. I’ve had to take time off work to deal with the issue, and it’s not over yet. Christmas is fast approaching. I don’t have a donate button here at PolarBearScience but we figured out a way to make it happen. His generous contribution is much appreciated. I’ve had dozens of emails of support, from known colleagues to people I’ve never heard from before.

Comments on the starving polar bear below.

UPDATE 11 December 2017: shortly after posting, I came across James Delingpole’s just-published column on the starving polar bear issue, read it here.

UPDATE 11 December 2017: I forgot to say that I have yet to hear back from the editors of Bioscience regarding my retraction request, except they did respond to my second email on Fridayasking for confirmation that they received the letter sent three days earlier. I shouldn’t have had to prompt them: confirming receipt of such document is common courtesy and good business practise.  (h/t Anthony Watts)

UPDATE 11 December 2017 7:00 PM PST: Finally, after the damage has been done, polar bear specialists have spoken out (sort of) on the SeaLegacy “starving polar bear as victim of climate change story.” An article in the National Post was published in the early evening and features an interview with Andrew Derocher, with comments from Ian Stirling and Inuit representative Terry Audla (“What everybody got wrong about that video of a starving polar bear“). CBC covered a similar change of tune here. Too little, too late, I say. And over at the Globe and Mail, Margaret Wente has a hard-hitting piece today on why this kind of exaggeration is bad for everyone.
Continue reading

Bioscience article is academic rape: an assertion of power and intimidation

Characterizing a professional, respected scientist as an unqualified vengeful opinion writer is the same kind of power attack as rape. It’s meant to humiliate and intimidate.

Amstup

I said this as part of a response to a comment at WUWT late yesterday (copied in full below). The picture above shows Steven Amstrup holding polar bear cubs against their will — not for any scientific purpose, just for a photo that shows he can.

Also yesterday, Tom Fuller at ClimateScepticism wrote a hard-hitting critique of the Bioscience article that similarly noted the sexist nature of this harassment and the fact that this is the way Michael Mann and his colleagues behave toward female scientists who cross them or their supporters. He concludes:

“The purpose of these papers is not to communicate.

It is to excommunicate.”

As I said when this paper first came out, this response is all about my reasoned and fully referenced criticisms of Steve Amstrup’s work in particular (although I have taken issue with some of Stirling’s recent work as well).

The evidence that Steve Amstrup is willing to lie in order to publicly degrade me and my work in retribution for not taking everything he says as the gospel truth comes from an article at Motherboard yesterday. In it, Amstrup was quoted as saying:

 “You don’t have to read far in her material to see that it is full of unsubstantiated statements and personal attacks on scientists, using names like eco-terrorists, fraudsters, green terrorists and scammers,” Amstrup said.

I wrote Motherboard and asked for clarification that this was indeed what Amstrup said because I know it to be a lie. Check for yourself using the search function on my blog, it’s easy to do. I have never used any of those terms to refer to anyone, let alone a fellow scientist.

Late in the day, I got this response from the writer of the piece:

“Thank you for your note. A clarification has been added to the article. (my emphasis)

“You don’t have to read far in her material to see that it is full of unsubstantiated statements and personal attacks on scientists, using names like eco-terrorists, fraudsters, green terrorists and scammers,” Amstrup said. In a follow-up email on Friday, Amstrup clarified that these statements to Motherboard were meant to reflect the climate denier community as a whole, rather than Crockford in particular.

Except Amstrup specificially referred to my work. I insisted further clarification was necessary but rather than noting that I had, in fact, never used those terms on my blog, the author added this statement:

“In an email to Motherboard, Crockford denied using those terms on her blog.”

So, the author of the Motherboard piece was willing to take Amstrup’s word for an egregious accusation and when Amstrup was caught in a lie, was unwilling to make that clear. And the media wonder why they have lost the public’s trust.

However, this is all a day late and a dollar short. The cat’s out of the bag regarding Amstrup’s failed predictions. My critique (Crockford 2017) is a thorough scientific exposé of his unsuccessful model (which used assumptions based on Amstrup’s expert opinion) and people in power are taking it seriously. The Bioscience paper says more about its authors than it says about me.

References

Crockford, S.J. 2017. Testing the hypothesis that routine sea ice coverage of 3-5 mkm2 results in a greater than 30% decline in population size of polar bears (Ursus maritimus). PeerJ Preprints 2 March 2017. Doi: 10.7287/peerj.preprints.2737v3 Open access. https://doi.org/10.7287/peerj.preprints.2737v3

Continue reading

Death of the polar bear as climate change icon validates Mitch Taylor’s skepticism

You could call it karma — the death of the polar bear icon after the shameful hubris of polar bear experts back in 2009.

That year, the IUCN Polar Bear Specialist Group booted 20-year member Mitch Taylor out of their organization, explaining that his skeptical views on human-caused global warming were “extremely unhelpful” to their polar bear conservation agenda.

Said chairman Andrew Derocher in his email to Taylor:  “Time will tell who is correct.”

It’s now clear that Mitch Taylor was right to be skeptical of sea ice models based on pessimistic climate change assumptions; he was also right to be more optimistic than his PBSG colleagues about the ability of polar bears to adapt to changing sea ice conditions (Taylor and Dowsley 2008), since the bears have turned out to be more resilient than even he expected.

Fat mother and cubs_Southern Beaufort April 2016_USGS

Fat polar bears — not starving ones — dominate photos taken in recent years. The total failure of polar bear numbers to crash as predicted in response to the abrupt decline in summer sea ice in 2007 and persistent low summer sea ice levels since then (Crockford 2017), is vindication for Mitch Taylor. It’s time someone said so.

More on the 2009 incident below.
Continue reading

Video: Death of a Climate Icon, the polar bear’s demise as a useful poster child

Last week I asked: “What’s causing the death of the polar bear as a climate change icon?”

I was echoing the conclusion of a commentator at the Arctic Institute (22 August 2017) who lamented: “The polar bear is dead, long live the polar bear” and climate scientist Michael Mann, who told a lecture audience a few months ago that polar bears are no longer useful for generating “action” on climate change.

Crockford 2017_Slide 15 screencap

This is slide 15 from my presentation at ICCC-12 in Washington, D.C. in March 2017.

Now here’s the video. Watch “The Death of a Climate Icon” (31 August 2017):

The video was made possible with the assistance of the Global Warming Policy Foundation.

Kind of makes you wonder: is Al Gore’s recent climate change movie, An Inconvenient Sequel: Truth to Power, tanking at the box office because he couldn’t include polar bears as an example of the effects of human-caused global warming as he did in his award-winning 2007 effort? Did too many polar bears doom Gore’s 2017 movie?

Conclusions in the video about the predictions of polar bear decline vs. the current status of polar bears and sea ice are documented in my 2017 published paper:

Crockford, S.J. 2017. Testing the hypothesis that routine sea ice coverage of 3-5 mkm2 results in a greater than 30% decline in population size of polar bears (Ursus maritimus). PeerJ Preprints 19 January 2017. Doi: 10.7287/peerj.preprints.2737v1 Open access. https://peerj.com/preprints/2737/

Crockford 2017 sea ice graphic

Pacific walrus haulout two weeks early, US gov’t agency blames “earliest” ice loss

Walrus 2012 July USGSThis year’s baseless media frenzy over walrus survival and loss of summer sea ice blamed on human-caused global warming was initiated by a press release from US Fish and Wildlife last week (16 August 2017, pdf here: “Pacific walruses haul out near Point Lay earlier than in previous years“). Quote below, my bold:

In the first week of August, several hundred Pacific walruses were observed on a barrier island near the Native Village of Point Lay, a small, Iñupiaq community on the northwest coast of Alaska. This is the earliest date yet for the haulout to form…This year, sea ice has retreated beyond the continental shelf earlier than in previous years

But is this all true? In a word, no — and it didn’t take much research to uncover the truth.

UPDATE 24 August 2017: A few minutes after this post was published, I became aware that just yesterday, 20 conservation activist organizations, lead by the Center for Biological Diversity (who led the polar bear listing charge) issued a press release regarding a letter (pdf here) pressuring the US Fish and Wildlife Service to list Pacific walrus as threatened or endangered under the Endangered Species Act. Apparently, a decision must be made by the end of September on whether to actively list walrus or not. The text below has been amended to reflect this development.
Continue reading

Fat polar bears [and lots of them] drive public confidence in future of the species

What is causing the death of the polar bear as a climate change icon? Fat bears are part of it, but mostly it’s the fact that polar bear numbers haven’t declined as predicted.

Western Hudson Bay polar bears around Churchill, Manitoba appear mostly in good shape this summer despite the very late freeze-up last fall, including the very fat bear caught on camera below (see more great pictures here):

Churchill_PolarBears_FAT bear post_21 Aug 2017

Not only have we been seeing pictures of fat bears rather than starving bears in recent years but there are lots of them, in Western Hudson Bay and other seasonal sea ice regions where there should be none (if the models had been correct). No wonder polar bears are falling out of favour as an icon for catastrophic human-caused global warming.

[Here’s another picture of a fat bear, this one from Svalbard]

Excuses for why the public is no longer worried about the future of polar bears include a recent claim by climate scientist Michael Mann that “by making polar bears and penguins the poster child for climate change, we have wrongly conveyed that this is some exotic problem far off.

But none of these apologists acknowledge the simple truth: the models that  predicted catastrophe for polar bears due to diminished summer sea ice turned out to be wrong. The sea ice declined but polar bears flourished. Polar bears in seasonal sea ice ecoregions like Western Hudson Bay and Baffin Bay didn’t die off due to climate change as people were told would happen — why should they believe any of the other scare stories?

In and around Churchill, where tourists flock to see Western Hudson Bay polar bears up close and personal, one bear in good condition recently ran through town:

Overall, there have been fewer problems or conflicts this year in Churchill compared to last (after 6 weeks of onshore living), see below.

Polar bears are no longer a useful global warming icon because they are thriving despite diminished sea ice: Churchill area polar bears are a good example.

Continue reading

Abrupt summer sea ice decline has not affected polar bear numbers as predicted

Yes, Arctic sea ice has declined since satellite records began in 1979 but polar bears have adjusted well to this change, especially to the abrupt decline to low summer sea ice levels that have been the norm since 2007.

Global pb population size sea ice 2017 July PolarBearScience

Some polar bear subpopulations have indeed spent more time on land in summer than in previous decades but this had little negative impact on health or survival and while polar bear attacks on humans appear to have increased in recent years (Wilder et al. 2017), the reasons for this are not clear: reduced summer sea ice is almost certainly not the causal factor (see previous post here).

Ultimately, there is little reason to accept as plausible the computer models (e.g. Atwood et al. 2016; Regehr et al. 2016) that suggest polar bear numbers will decline by 30% or more within a few decades: even the IUCN Red List assessment (Wiig et al. 2015) determined the probability of that happening was only 70%.

Arctic sea ice has never been a stable living platform (Crockford 2015): it shifts from season to season, year to year, and millennia to millennia. Without the ability to adapt to changing conditions, Arctic species like polar bears and their prey species (seals, walrus, beluga, narwhal) would not have survived the unimaginably extreme changes in ice extent and thickness that have occurred over the last 30,000 years, let alone the extremes of sea ice they endured in the last 200,000 years or so.

Some biologists continue to hawk doomsday scenarios for polar bears due to summer sea ice loss but the truth is that their previous predictions based on sea ice declines failed so miserably (e.g. Amstrup et al. 2007) that it’s impossible to take the new ones seriously — especially since the basic assumptions that caused the first predictions to fail have not been corrected, as I’ve stated in print (Crockford 2017:27):

In summary, recent research has shown that most bears are capable of surviving a summer fast of five months or so as long as they have fed sufficiently from late winter through spring, which appears to have taken place since 2007 despite marked declines in summer sea ice extent.

The assumption that summer sea ice is critical feeding habitat for polar bears is not supported.

Recent research shows that changes in summer ice extent generally matter much less than assumed in predictive polar bear survival models of the early 2000s as well as in recent models devised to replace them (Amstrup et al. 2010; Atwood et al. 2016a; Regehr et al. 2015; Regeher et al. 2016; Wiig et al. 2015), while variations in spring ice conditions matter more.

As a consequence, the evidence to date suggests that even if an ‘ice-free’ summer occurs sometime in the future ­ defined as sea ice extent of 1 million km2 or less (Jahn et al. 2016) ­ it is unlikely to have a devastating impact on polar bears or their prey. [my bold]

The abrupt drop in summer sea ice that occurred in 2007 was not predicted by experts to occur until mid-century yet the predicted decimation of polar bears worldwide expected under those conditions (a loss of 2/3 of the global total, to only about 6660-8325 bears) not only did not happen, it did not come even close to happening (Crockford 2017; see also my recent books, Polar Bear Facts & Myths, and Polar Bears: Outstanding Survivors of Climate Change, sidebar).

Instead, the global population grew from about 22,550 bears in 2005 to about 28,500 bears in 2015. And while this might not be a statistically significant increase (due to the very wide margins of error for polar bear estimates), it is absolutely not a decline.

The present reality is that low summer sea ice cover since 2007 has not caused polar bear numbers to decline and therefore, polar bears are not a species in trouble. This suggests that even if the Arctic should become briefly ice-free in summer in the future, polar bears are likely to be only minimally affected and not become threatened with extinction. Polar bears are outstanding survivors of climate change: recent research and their evolutionary history confirm this to be true.

Continue reading