Fig. 2From: Relationship between the Northern Pacific Gyre Oscillation and tree-ring cellulose oxygen isotopes in northeastern JapanCorrelation between tree-ring δ18O and a 2-month average precipitation, b 2-month average relative humidity (RH), c monthly mean temperature in Sendai. Red lines indicate the significant level 99%. J January, F February, M March, A April, M May, J June, J July, A August, S September, O October, N November, D DecemberBack to article page