PAGES2K: More Upside Down?
Does it matter whether proxies are used upside-down or not?
Maybe not in Mann-world (where, in response to our criticism at PNAS, Mann claimed that it was impossible for him to use series upside-down). But, unlike Mann, Darrell Kaufman acknowledges responsibility for using proxies upside-up. Unfortunately, he and the PAGES2K authors don’t seem to be very diligent in ensuring that they do so.
