November 14, 1997, J. Overpeck et al., Arctic Environmental Change of the Last Four Centuries, It is also a product of the NSF- and NOAA-sponsored Analysis of Rapid and Recent Climatic Change (ARRCC) and other non-PALE (for example, dendroclimatic) projects, and is also a result of research funded by the Natural Sciences and Engineering Research Council of Canada (NSERC), including the Paleoecological Analysis of Circumarctic Treeline (PACT) program.