Earth Institute Research Projects

Collaborative Research: P2C2-Tree-Ring Reconstructions of Western North Pacific Climate Dynamics

Lead PI: Dr. Rosanne DArrigo , Kevin Anchukaitis , Dr. Nicole K. Davi

Unit Affiliation: Biology and Paleo Environment, Lamont-Doherty Earth Observatory (LDEO)

May 2012 - May 2016
Global ; Trans-North Pacific
Project Type: Research

DESCRIPTION: This research seeks to provide a more integrative understanding of the spatiotemporal variability of trans-North Pacific climate through the use of new and existing data sets of tree rings. Specifically, the researchers seek to answer the following scientific questions: 1) How has the North Pacific atmosphere-ocean circulation varied over the past several centuries to millennium during such events as the Medieval Climate Anomaly and the Little Ice Age; 2) Can different paleoreconstructions of Pacific Decadal Variability (PDV) be reconciled? 3) Is the PDV during the recent era (e.g. 1976-77 Pacific warming, regime shift) unique relative to past centuries? 4) Do robust and preferred decadal to multidecadal oscillatory modes of PDV exist? 5) Is the PDV basin-wide with robust linkages between the tropics and higher northern latitudes on both sides of the North Pacific? and 6) How have internal and external forcings impacted past North Pacific climate on multiple timescales?


National Science Foundation (NSF)




College of Wooster, Moscow University, National Center for Atmospheric Research (NCAR)



Fang, K., H. Seppa, S. Salonen, N. Davi and R. D?Arrigo.. "A reconstruction of the Asia-Pacific Oscillation index for the past 1500 years and its association with the Indian summer monsoon.," International Journal of Climatology, 2013. doi:DOI: 10.1002/joc.3856.

Wiles, G., R. D?Arrigo, S. Jarvis, D. Barclay, S. Appleton and R. Wilson, D. Frank and D. Lawson.. "Surface air temperature variability for the Gulf of Alaska over the past 1200 years.," The Holocene, 2013. doi:DOI: 10.1177/0959683613516815.


little ice age pacific decadal variability paleoclimate ocean and climate physics medieval climate anomaly tree rings


Earth fundamentals