Arctic temperatures, however inaccurate they are or are not, is just one of many ways to monitor global warming.
And this whole thread is just one more example of global warming deniers seizing on any straw, to say, see, this disproves global warming.
The point is that we have many other independent ways to measure arctic temperatures, not only at the poles, but at lower latitudes also. One such measure is
simply visual, the amount of arctic ice, and when its vanishing at an alarming rate, and opening up a Northwest passage that never really existed before, it very hard for a denier to deny undeniable evidence.
But that seemingly never deters a true denier, as they search and cherry pick at every little anomaly they can find, as they sound as credible as the Iraqi information minister, motor mouthing onward, until they finally realize they have been FOS all along.