As if on cue just before an important polar bear announcement, Steven Amstrup, full time employee of Polar Bears International (PBI), is crying “starving polar bears” yet again, with a laughable twist.
Over at “The Conversation” (a university supported forum for academics), in a piece titled “Cold weather in the US no solace for starving polar bears,” Amstrup uses his adjunct affiliation at University of Wyoming to unleash a bit of unpaid advertising for PBI’s alarmist message (I put it this way because while Amstrup does disclose his affiliation at PBI, he is more than just an affiliated member, he is their paid spokesperson).
Ironically, the headline photo (Fig. 1) is the notorious “Ursus bogus,” the photoshopped image used by the journal Science back in May 2010 to feature an article on the integrity of science, It was quickly exposed by Tim Blair at The Telegraph (also covered at WUWT), and the journal was obliged to acknowledge the error, replace the image and issue a correction.
In this case, commenter Brad Keyes at The Conversation defends the use of the “Ursus bogus” image with this astonishing statement [UPDATE Jan. 25/14: it has since transpired that this was almost certainly meant to be satire]:
“The problem is, only sensational exaggeration makes the kind of story that will get politicians’—and readers’—attention. So, yes, climate scientists might exaggerate, but in today’s world, this is the only way to assure any political action and thus more federal financing to reduce the scientific uncertainty.”
However, we now know that Amstrup is crying wolf — summer sea ice has been declining despite a hiatus in global warming and unusual numbers of polar bears are not starving. He seems to think that if he keeps repeating his Chicken Little message (with nary a recent photo of an actual starving polar bear) he will convince more people to believe him and donate to PBI. It’s his job to do so of course, so he’s not likely to stop. [pardon my mixed metaphor – Amstrup, if you recall, prefers a Titanic metaphor]
“For wild polar bears, the continuing rise of the earth’s temperature is a problem. During 30 years of studying these bears in Alaska, I documented positive and then negative trends in their status.”
Because they depend on a habitat that literally melts as temperatures rise, polar bears are truly an early hallmark of human-caused climate change.” [my bold]
The problem is, for 16 of the last 30 years, global temperatures have hardly increased at all. And as I noted in a post last week (January 16, “Nature acknowledges warming hiatus, but does not explain continued declines in Arctic sea ice”), during this global temperature “hiatus” Arctic sea ice measured in late summer (September) has declined dramatically – more than IPCC models predicted (Fig. 2).
Why are sea ice modelers and polar bear biologists not shaking their heads and asking what’s wrong with the models? Go figure!
Amstrup goes on:
“In September of 2007, after exhaustive analysis of all of the available data, my colleagues and I predicted that we could lose two thirds of the world’s polar bears by the middle of this century — perhaps all of them by 2100. That prediction led to the listing of polar bears as a Threatened Species under the US Endangered Species Act (ESA) – the first species listed under the ESA due to human-caused global warming.
Polar bears occur in 19 populations spread across the vast Arctic expanse. They will not all respond to a warming world in exactly the same way or at the same time. Some already feel the effects others may not for years. But the near-term variation in effects of warming should not distract us from the ultimate certainty that polar bears will disappear without our help.”[my bold]
As I’ve discussed previously, the predictions of possible extinction by the end of this century are based entirely on Amstrup’s opinion of how polar bears will react to predicted future sea ice declines.
But observations have revealed that within similar sea ice “ecoregions,” most polar bear populations are doing just fine, even if one or two are not doing quite as well. Amstrup prefers to downplay those contradictions but that is hardly surprising.
In other words, it is not entirely clear that increases in global temperature that have been blamed on atmospheric carbon dioxide from human fossil fuel use is responsible for recent declines in Arctic sea ice, and consequently, it cannot be taken as a given that sea ice declines in summer will necessarily cause negative effects on polar bears.
However, this article does put polar bears back in the news — just in time for the release of the new status assessment and population estimates promised by the advocacy/conservation science organization Polar Bear Specialist Group (PBSG) “on or before February 1, 2014.“ The announcement has all the earmarks of including an official increase in the global population estimate, which requires some explaining away. Amstrup has obliged.
See these posts for more detail:
Did the PBSG game the polar bear listing process?
Stirling, I. and Derocher, A.E. 2012. Effects of climate warming on polar bears: a review of the evidence. Global Change Biology 18: 2694-2706. doi:10.1111/j.1365-2486.2012.02753.x
Stroeve, J., Holland, M.M., Scambos, T. and Serreze, M. 2007. Arctic sea ice decline: faster than forecast. Geophysical Research Letters 34: L09501, doi:10.1029/2007/GL029703.