Figure 2: (a) Climatological mean December precipitation during 2000–2014 for the CTL run. (b) As in Figure 2(a) but for the MOD run. (c) Differences in precipitation (shaded) and 925 hPa horizontal wind divergence (contours) between the MOD and CTL runs (former minus latter). Purple and green contour lines denote positive and negative values, respectively. The contoured interval is 5 10−6 s−1. Values of less than 5 10−6 s−1 are suppressed.