title: Tree ring indices: a circumpolar comparison.
abstract: A graphic and statistical comparison of major trends in tree ring indices representative of interior Alaska, northern Urals, northern Scandinavia, and Labrador indicates a highly significant correlation for most 50-year intervals between 1650 and the present. This is suggestive of similarities in trends of summer temperature on a circumpolar scale.
authors.forename: R K
authors.initials: RK
authors.lastname: Haugen