Assessing the Added Value of Dynamical Downscaling Using the Standardized Precipitation Index

Figure 4

SPI correlation coefficient between (a) WRF and PRISM and (b) R2 and PRISM for 1-, 3-, 6-, and 12-month accumulation periods averaged over each NCDC climate region. (c) Difference between WRF and R2 correlation coefficient (WRF minus R2) for the same periods and regions as in (a) and (b).

(a)

(b)

(c)