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Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Table 1 Correlation coefficients between tree-ring δ18O and two indices (NPGO and PDO)

From: Relationship between the Northern Pacific Gyre Oscillation and tree-ring cellulose oxygen isotopes in northeastern Japan

Correlation

MJ

JA

SO

ND

+JF

+MA

+MJ

NPGO

0.20

0.23

0.18

0.15

0.28*

0.23

0.26*

PDO

− 0.12

− 0.06

− 0.10

− 0.10

0.01

0.01

− 0.03

  1. * 0.05 significant level
  2. + means the following year, and analysis period is from A.D. 1950 to 2010
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