Sesyf wins the name game. The ossifrage (which literally does mean bone breaker) is also one of the common names for the bird of prey otherwise known as the bearded vulture, lammergeier, or Gypaetus barbatus. I've used it, or variations, as my handle elsewhere where I've done pseudonymous science and statistics reporting, so adopted it here as well. No connection to East Germany. And thus ends that digression.
As for Isachsen, those temperature records are so extreme they'd be funny if this wasn't all quite serious. It's difficult to get a context for the effects of industrialization on climate, especially if we want to compare things to the way they were well before the satellite era. Indeed, our baseline "climatology" numbers on many metrics are averages that start in the 1970s.
To get some idea how cold Ellef Ringnes was historically, though, it's worth considering the archaeological history of the Thule Culture (proto-Inuit). Late in the Medieval Warm Period, the Thule expanded north and east. Archaeological investigations have been fairly cursory, considering the environment in question. The best described of these eastern settlements was at Herlufsholm Strand (the cape north of Independence Fjord on the northeast coast of Greenland), but the most northerly was at Frigg Fjord, which is actually quite close to Cape Morris Jessup.
Nevertheless, during the three decades that Isachsen was operated as a manned weather station, no expeditions discovered any trace of prior settlement on Ellef Ringnes. The consensus of the archaeological community then, as now, is that a people who literally colonized the north coast of Greenland considered Ellef Ringnes (and the islands near it) to be too cold and inhospitable to live.
On that station record day in August 2016, I wouldn't have even needed a long-sleeved shirt to walk around Isachsen.
That's probably not a sequence of observations that upholds robust scientific rigor, but I think it underscores that Arctic warming is now well past the levels of the Medieval Warm Period. PGAS and the Peary Channel won't be the last parts of the Arctic to go ice-free, but an ice-free PGAS and/or Peary Channel are likely indicators that the Arctic is in the final phase of transition toward a BOE. And I think that conditions make that possible this year, at least for the PGAS. By comparison, in 2012, it had some open water (mostly in the southeast, at the outflow to the Danish Strait and Maclean Strait) but still substantial ice elsewhere, and Peary Channel was essentially entirely frozen.