Fig. 7.4 Correlation of the merged reconstruction with the SOI and the NAO indices, 1900–2000.
Annual averages are used for the SOI correlation, and Dec–Mar averages are used for the NAO
Fig. 7.5 Trends of the merged reconstruction (1900–2008) averaged zonally over land, oceans,
and all areas
7 Developing a Historical Precipitation Record
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