LDEO Publication: Yes Publication Type: Journal Article Year of Publication: 2011 Authors: D'Arrigo, R.; Seager, R.; Smerdon, J. E.; LeGrande, A. N.; Cook, E. R. Journal Title: Geophysical Research Letters URL: http://www.ldeo.columbia.edu/~jsmerdon/papers/2011_grl_darrigoetal.pdf